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