git.oblomov.eu Git - wine/blob - dlls/strmbase/pin.c

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