dlls/quartz/pin.c

   1 /*
   2  * Generic Implementation of IPin Interface
   3  *
   4  * Copyright 2003 Robert Shearman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "quartz_private.h"
  22 #include "pin.h"
  23
  24 #include "wine/debug.h"
  25 #include "wine/unicode.h"
  26 #include "uuids.h"
  27 #include "vfwmsgs.h"
  28 #include <assert.h>
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  31
  32 #define ALIGNDOWN(value,boundary) ((value)/(boundary)*(boundary))
  33 #define ALIGNUP(value,boundary) (ALIGNDOWN((value)+(boundary)-1, (boundary)))
  34
  35 typedef HRESULT (*SendPinFunc)( IPin *to, LPVOID arg );
  36
  37 /** Helper function, there are a lot of places where the error code is inherited
  38  * The following rules apply:
  39  *
  40  * Return the first received error code (E_NOTIMPL is ignored)
  41  * If no errors occur: return the first received non-error-code that isn't S_OK
  42  */
  43 static HRESULT updatehres( HRESULT original, HRESULT new )
  44 {
  45     if (FAILED( original ) || new == E_NOTIMPL)
  46         return original;
  47
  48     if (FAILED( new ) || original == S_OK)
  49         return new;
  50
  51     return original;
  52 }
  53
  54 /** Sends a message from a pin further to other, similar pins
  55  * fnMiddle is called on each pin found further on the stream.
  56  * fnEnd (can be NULL) is called when the message can't be sent any further (this is a renderer or source)
  57  *
  58  * If the pin given is an input pin, the message will be sent downstream to other input pins
  59  * If the pin given is an output pin, the message will be sent upstream to other output pins
  60  */
  61 static HRESULT SendFurther( IPin *from, SendPinFunc fnMiddle, LPVOID arg, SendPinFunc fnEnd )
  62 {
  63     PIN_INFO pin_info;
  64     ULONG amount = 0;
  65     HRESULT hr = S_OK;
  66     HRESULT hr_return = S_OK;
  67     IEnumPins *enumpins = NULL;
  68     BOOL foundend = TRUE;
  69     PIN_DIRECTION from_dir;
  70
  71     IPin_QueryDirection( from, &from_dir );
  72
  73     hr = IPin_QueryInternalConnections( from, NULL, &amount );
  74     if (hr != E_NOTIMPL && amount)
  75         FIXME("Use QueryInternalConnections!\n");
  76
  77     pin_info.pFilter = NULL;
  78     hr = IPin_QueryPinInfo( from, &pin_info );
  79     if (FAILED(hr))
  80         goto out;
  81
  82     hr = IBaseFilter_EnumPins( pin_info.pFilter, &enumpins );
  83     if (FAILED(hr))
  84         goto out;
  85
  86     hr = IEnumPins_Reset( enumpins );
  87     while (hr == S_OK) {
  88         IPin *pin = NULL;
  89         hr = IEnumPins_Next( enumpins, 1, &pin, NULL );
  90         if (hr == VFW_E_ENUM_OUT_OF_SYNC)
  91         {
  92             hr = IEnumPins_Reset( enumpins );
  93             continue;
  94         }
  95         if (pin)
  96         {
  97             PIN_DIRECTION dir;
  98
  99             IPin_QueryDirection( pin, &dir );
 100             if (dir != from_dir)
 101             {
 102                 IPin *connected = NULL;
 103
 104                 foundend = FALSE;
 105                 IPin_ConnectedTo( pin, &connected );
 106                 if (connected)
 107                 {
 108                     HRESULT hr_local;
 109
 110                     hr_local = fnMiddle( connected, arg );
 111                     hr_return = updatehres( hr_return, hr_local );
 112                     IPin_Release(connected);
 113                 }
 114             }
 115             IPin_Release( pin );
 116         }
 117         else
 118         {
 119             hr = S_OK;
 120             break;
 121         }
 122     }
 123
 124     if (!foundend)
 125         hr = hr_return;
 126     else if (fnEnd) {
 127         HRESULT hr_local;
 128
 129         hr_local = fnEnd( from, arg );
 130         hr_return = updatehres( hr_return, hr_local );
 131     }
 132
 133 out:
 134     if (enumpins)
 135         IEnumPins_Release( enumpins );
 136     if (pin_info.pFilter)
 137         IBaseFilter_Release( pin_info.pFilter );
 138     return hr;
 139 }
 140
 141 static HRESULT deliver_endofstream(IPin* pin, LPVOID unused)
 142 {
 143     return IPin_EndOfStream( pin );
 144 }
 145
 146 static HRESULT deliver_beginflush(IPin* pin, LPVOID unused)
 147 {
 148     return IPin_BeginFlush( pin );
 149 }
 150
 151 static HRESULT deliver_endflush(IPin* pin, LPVOID unused)
 152 {
 153     return IPin_EndFlush( pin );
 154 }
 155
 156 typedef struct newsegmentargs
 157 {
 158     REFERENCE_TIME tStart, tStop;
 159     double rate;
 160 } newsegmentargs;
 161
 162 static HRESULT deliver_newsegment(IPin *pin, LPVOID data)
 163 {
 164     newsegmentargs *args = data;
 165     return IPin_NewSegment(pin, args->tStart, args->tStop, args->rate);
 166 }
 167
 168 /*** PullPin implementation ***/
 169
 170 static HRESULT PullPin_Init(const IPinVtbl *PullPin_Vtbl, const PIN_INFO *info,
 171     SAMPLEPROC_PULL pSampleProc, void *pUserData, QUERYACCEPTPROC pQueryAccept,
 172     CLEANUPPROC pCleanUp, REQUESTPROC pCustomRequest, STOPPROCESSPROC pDone,
 173     LPCRITICAL_SECTION pCritSec, PullPin *pPinImpl)
 174 {
 175     /* Common attributes */
 176     pPinImpl->pin.IPin_iface.lpVtbl = PullPin_Vtbl;
 177     pPinImpl->pin.refCount = 1;
 178     pPinImpl->pin.pConnectedTo = NULL;
 179     pPinImpl->pin.pCritSec = pCritSec;
 180     /* avoid copying uninitialized data */
 181     strcpyW(pPinImpl->pin.pinInfo.achName, info->achName);
 182     pPinImpl->pin.pinInfo.dir = info->dir;
 183     pPinImpl->pin.pinInfo.pFilter = info->pFilter;
 184     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
 185
 186     /* Input pin attributes */
 187     pPinImpl->pUserData = pUserData;
 188     pPinImpl->fnQueryAccept = pQueryAccept;
 189     pPinImpl->fnSampleProc = pSampleProc;
 190     pPinImpl->fnCleanProc = pCleanUp;
 191     pPinImpl->fnDone = pDone;
 192     pPinImpl->fnPreConnect = NULL;
 193     pPinImpl->pAlloc = NULL;
 194     pPinImpl->prefAlloc = NULL;
 195     pPinImpl->pReader = NULL;
 196     pPinImpl->hThread = NULL;
 197     pPinImpl->hEventStateChanged = CreateEventW(NULL, TRUE, TRUE, NULL);
 198     pPinImpl->thread_sleepy = CreateEventW(NULL, FALSE, FALSE, NULL);
 199
 200     pPinImpl->rtStart = 0;
 201     pPinImpl->rtCurrent = 0;
 202     pPinImpl->rtStop = ((LONGLONG)0x7fffffff << 32) | 0xffffffff;
 203     pPinImpl->dRate = 1.0;
 204     pPinImpl->state = Req_Die;
 205     pPinImpl->fnCustomRequest = pCustomRequest;
 206     pPinImpl->stop_playback = TRUE;
 207
 208     InitializeCriticalSection(&pPinImpl->thread_lock);
 209     pPinImpl->thread_lock.DebugInfo->Spare[0] = (DWORD_PTR)( __FILE__ ": PullPin.thread_lock");
 210
 211     return S_OK;
 212 }
 213
 214 HRESULT PullPin_Construct(const IPinVtbl *PullPin_Vtbl, const PIN_INFO * pPinInfo,
 215                           SAMPLEPROC_PULL pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept,
 216                           CLEANUPPROC pCleanUp, REQUESTPROC pCustomRequest, STOPPROCESSPROC pDone,
 217                           LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 218 {
 219     PullPin * pPinImpl;
 220
 221     *ppPin = NULL;
 222
 223     if (pPinInfo->dir != PINDIR_INPUT)
 224     {
 225         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
 226         return E_INVALIDARG;
 227     }
 228
 229     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
 230
 231     if (!pPinImpl)
 232         return E_OUTOFMEMORY;
 233
 234     if (SUCCEEDED(PullPin_Init(PullPin_Vtbl, pPinInfo, pSampleProc, pUserData, pQueryAccept, pCleanUp, pCustomRequest, pDone, pCritSec, pPinImpl)))
 235     {
 236         *ppPin = &pPinImpl->pin.IPin_iface;
 237         return S_OK;
 238     }
 239
 240     CoTaskMemFree(pPinImpl);
 241     return E_FAIL;
 242 }
 243
 244 static HRESULT PullPin_InitProcessing(PullPin * This);
 245
 246 HRESULT WINAPI PullPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 247 {
 248     PIN_DIRECTION pindirReceive;
 249     HRESULT hr = S_OK;
 250     PullPin *This = impl_PullPin_from_IPin(iface);
 251
 252     TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt);
 253     dump_AM_MEDIA_TYPE(pmt);
 254
 255     EnterCriticalSection(This->pin.pCritSec);
 256     if (!This->pin.pConnectedTo)
 257     {
 258         ALLOCATOR_PROPERTIES props;
 259
 260         props.cBuffers = 3;
 261         props.cbBuffer = 64 * 1024; /* 64 KB */
 262         props.cbAlign = 1;
 263         props.cbPrefix = 0;
 264
 265         if (This->fnQueryAccept(This->pUserData, pmt) != S_OK)
 266             hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto
 267                                            * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */
 268
 269         if (SUCCEEDED(hr))
 270         {
 271             IPin_QueryDirection(pReceivePin, &pindirReceive);
 272
 273             if (pindirReceive != PINDIR_OUTPUT)
 274             {
 275                 ERR("Can't connect from non-output pin\n");
 276                 hr = VFW_E_INVALID_DIRECTION;
 277             }
 278         }
 279
 280         This->pReader = NULL;
 281         This->pAlloc = NULL;
 282         This->prefAlloc = NULL;
 283         if (SUCCEEDED(hr))
 284         {
 285             hr = IPin_QueryInterface(pReceivePin, &IID_IAsyncReader, (LPVOID *)&This->pReader);
 286         }
 287
 288         if (SUCCEEDED(hr) && This->fnPreConnect)
 289         {
 290             hr = This->fnPreConnect(iface, pReceivePin, &props);
 291         }
 292
 293         /*
 294          * Some custom filters (such as the one used by Fallout 3
 295          * and Fallout: New Vegas) expect to be passed a non-NULL
 296          * preferred allocator.
 297          */
 298         if (SUCCEEDED(hr))
 299         {
 300             hr = StdMemAllocator_create(NULL, (LPVOID *) &This->prefAlloc);
 301         }
 302
 303         if (SUCCEEDED(hr))
 304         {
 305             hr = IAsyncReader_RequestAllocator(This->pReader, This->prefAlloc, &props, &This->pAlloc);
 306         }
 307
 308         if (SUCCEEDED(hr))
 309         {
 310             CopyMediaType(&This->pin.mtCurrent, pmt);
 311             This->pin.pConnectedTo = pReceivePin;
 312             IPin_AddRef(pReceivePin);
 313             hr = IMemAllocator_Commit(This->pAlloc);
 314         }
 315
 316         if (SUCCEEDED(hr))
 317             hr = PullPin_InitProcessing(This);
 318
 319         if (FAILED(hr))
 320         {
 321              if (This->pReader)
 322                  IAsyncReader_Release(This->pReader);
 323              This->pReader = NULL;
 324              if (This->prefAlloc)
 325                  IMemAllocator_Release(This->prefAlloc);
 326              This->prefAlloc = NULL;
 327              if (This->pAlloc)
 328                  IMemAllocator_Release(This->pAlloc);
 329              This->pAlloc = NULL;
 330         }
 331     }
 332     else
 333         hr = VFW_E_ALREADY_CONNECTED;
 334     LeaveCriticalSection(This->pin.pCritSec);
 335     return hr;
 336 }
 337
 338 HRESULT WINAPI PullPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 339 {
 340     PullPin *This = impl_PullPin_from_IPin(iface);
 341
 342     TRACE("(%p/%p)->(%s, %p)\n", This, iface, qzdebugstr_guid(riid), ppv);
 343
 344     *ppv = NULL;
 345
 346     if (IsEqualIID(riid, &IID_IUnknown))
 347         *ppv = iface;
 348     else if (IsEqualIID(riid, &IID_IPin))
 349         *ppv = iface;
 350     else if (IsEqualIID(riid, &IID_IMediaSeeking) ||
 351              IsEqualIID(riid, &IID_IQualityControl))
 352     {
 353         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, riid, ppv);
 354     }
 355
 356     if (*ppv)
 357     {
 358         IUnknown_AddRef((IUnknown *)(*ppv));
 359         return S_OK;
 360     }
 361
 362     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 363
 364     return E_NOINTERFACE;
 365 }
 366
 367 ULONG WINAPI PullPin_Release(IPin *iface)
 368 {
 369     PullPin *This = impl_PullPin_from_IPin(iface);
 370     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 371
 372     TRACE("(%p)->() Release from %d\n", This, refCount + 1);
 373
 374     if (!refCount)
 375     {
 376         WaitForSingleObject(This->hEventStateChanged, INFINITE);
 377         assert(!This->hThread);
 378
 379         if(This->prefAlloc)
 380             IMemAllocator_Release(This->prefAlloc);
 381         if(This->pAlloc)
 382             IMemAllocator_Release(This->pAlloc);
 383         if(This->pReader)
 384             IAsyncReader_Release(This->pReader);
 385         CloseHandle(This->thread_sleepy);
 386         CloseHandle(This->hEventStateChanged);
 387         This->thread_lock.DebugInfo->Spare[0] = 0;
 388         DeleteCriticalSection(&This->thread_lock);
 389         CoTaskMemFree(This);
 390         return 0;
 391     }
 392     return refCount;
 393 }
 394
 395 static void PullPin_Flush(PullPin *This)
 396 {
 397     IMediaSample *pSample;
 398     TRACE("Flushing!\n");
 399
 400     if (This->pReader)
 401     {
 402         /* Do not allow state to change while flushing */
 403         EnterCriticalSection(This->pin.pCritSec);
 404
 405         /* Flush outstanding samples */
 406         IAsyncReader_BeginFlush(This->pReader);
 407
 408         for (;;)
 409         {
 410             DWORD_PTR dwUser;
 411
 412             pSample = NULL;
 413             IAsyncReader_WaitForNext(This->pReader, 0, &pSample, &dwUser);
 414
 415             if (!pSample)
 416                 break;
 417
 418             assert(!IMediaSample_GetActualDataLength(pSample));
 419
 420             IMediaSample_Release(pSample);
 421         }
 422
 423         IAsyncReader_EndFlush(This->pReader);
 424
 425         LeaveCriticalSection(This->pin.pCritSec);
 426     }
 427 }
 428
 429 static void PullPin_Thread_Process(PullPin *This)
 430 {
 431     HRESULT hr;
 432     IMediaSample * pSample = NULL;
 433     ALLOCATOR_PROPERTIES allocProps;
 434
 435     hr = IMemAllocator_GetProperties(This->pAlloc, &allocProps);
 436
 437     This->cbAlign = allocProps.cbAlign;
 438
 439     if (This->rtCurrent < This->rtStart)
 440         This->rtCurrent = MEDIATIME_FROM_BYTES(ALIGNDOWN(BYTES_FROM_MEDIATIME(This->rtStart), This->cbAlign));
 441
 442     TRACE("Start\n");
 443
 444     if (This->rtCurrent >= This->rtStop)
 445     {
 446         IPin_EndOfStream(&This->pin.IPin_iface);
 447         return;
 448     }
 449
 450     /* There is no sample in our buffer */
 451     hr = This->fnCustomRequest(This->pUserData);
 452
 453     if (FAILED(hr))
 454         ERR("Request error: %x\n", hr);
 455
 456     EnterCriticalSection(This->pin.pCritSec);
 457     SetEvent(This->hEventStateChanged);
 458     LeaveCriticalSection(This->pin.pCritSec);
 459
 460     if (SUCCEEDED(hr))
 461     do
 462     {
 463         DWORD_PTR dwUser;
 464
 465         TRACE("Process sample\n");
 466
 467         pSample = NULL;
 468         hr = IAsyncReader_WaitForNext(This->pReader, 10000, &pSample, &dwUser);
 469
 470         /* Return an empty sample on error to the implementation in case it does custom parsing, so it knows it's gone */
 471         if (SUCCEEDED(hr))
 472         {
 473             hr = This->fnSampleProc(This->pUserData, pSample, dwUser);
 474         }
 475         else
 476         {
 477             if (hr == VFW_E_TIMEOUT)
 478             {
 479                 if (pSample != NULL)
 480                     WARN("Non-NULL sample returned with VFW_E_TIMEOUT.\n");
 481                 hr = S_OK;
 482             }
 483             /* FIXME: Errors are not well handled yet! */
 484             else
 485                 ERR("Processing error: %x\n", hr);
 486         }
 487
 488         if (pSample)
 489         {
 490             IMediaSample_Release(pSample);
 491             pSample = NULL;
 492         }
 493     } while (This->rtCurrent < This->rtStop && hr == S_OK && !This->stop_playback);
 494
 495     /*
 496      * Sample was rejected, and we are asked to terminate.  When there is more than one buffer
 497      * it is possible for a filter to have several queued samples, making it necessary to
 498      * release all of these pending samples.
 499      */
 500     if (This->stop_playback || FAILED(hr))
 501     {
 502         DWORD_PTR dwUser;
 503
 504         do
 505         {
 506             if (pSample)
 507                 IMediaSample_Release(pSample);
 508             pSample = NULL;
 509             IAsyncReader_WaitForNext(This->pReader, 0, &pSample, &dwUser);
 510         } while(pSample);
 511     }
 512
 513     /* Can't reset state to Sleepy here because that might race, instead PauseProcessing will do that for us
 514      * Flush remaining samples
 515      */
 516     if (This->fnDone)
 517         This->fnDone(This->pUserData);
 518
 519     TRACE("End: %08x, %d\n", hr, This->stop_playback);
 520 }
 521
 522 static void PullPin_Thread_Pause(PullPin *This)
 523 {
 524     PullPin_Flush(This);
 525
 526     EnterCriticalSection(This->pin.pCritSec);
 527     This->state = Req_Sleepy;
 528     SetEvent(This->hEventStateChanged);
 529     LeaveCriticalSection(This->pin.pCritSec);
 530 }
 531
 532 static void  PullPin_Thread_Stop(PullPin *This)
 533 {
 534     TRACE("(%p)->()\n", This);
 535
 536     EnterCriticalSection(This->pin.pCritSec);
 537     SetEvent(This->hEventStateChanged);
 538     LeaveCriticalSection(This->pin.pCritSec);
 539
 540     IBaseFilter_Release(This->pin.pinInfo.pFilter);
 541
 542     CoUninitialize();
 543     ExitThread(0);
 544 }
 545
 546 static DWORD WINAPI PullPin_Thread_Main(LPVOID pv)
 547 {
 548     PullPin *This = pv;
 549     CoInitializeEx(NULL, COINIT_MULTITHREADED);
 550
 551     PullPin_Flush(This);
 552
 553     for (;;)
 554     {
 555         WaitForSingleObject(This->thread_sleepy, INFINITE);
 556
 557         TRACE("State: %d\n", This->state);
 558
 559         switch (This->state)
 560         {
 561         case Req_Die: PullPin_Thread_Stop(This); break;
 562         case Req_Run: PullPin_Thread_Process(This); break;
 563         case Req_Pause: PullPin_Thread_Pause(This); break;
 564         case Req_Sleepy: ERR("Should not be signalled with SLEEPY!\n"); break;
 565         default: ERR("Unknown state request: %d\n", This->state); break;
 566         }
 567     }
 568     return 0;
 569 }
 570
 571 static HRESULT PullPin_InitProcessing(PullPin * This)
 572 {
 573     HRESULT hr = S_OK;
 574
 575     TRACE("(%p)->()\n", This);
 576
 577     /* if we are connected */
 578     if (This->pAlloc)
 579     {
 580         DWORD dwThreadId;
 581
 582         WaitForSingleObject(This->hEventStateChanged, INFINITE);
 583         EnterCriticalSection(This->pin.pCritSec);
 584
 585         assert(!This->hThread);
 586         assert(This->state == Req_Die);
 587         assert(This->stop_playback);
 588         assert(WaitForSingleObject(This->thread_sleepy, 0) == WAIT_TIMEOUT);
 589         This->state = Req_Sleepy;
 590
 591         /* AddRef the filter to make sure it and its pins will be around
 592          * as long as the thread */
 593         IBaseFilter_AddRef(This->pin.pinInfo.pFilter);
 594
 595
 596         This->hThread = CreateThread(NULL, 0, PullPin_Thread_Main, This, 0, &dwThreadId);
 597         if (!This->hThread)
 598         {
 599             hr = HRESULT_FROM_WIN32(GetLastError());
 600             IBaseFilter_Release(This->pin.pinInfo.pFilter);
 601         }
 602
 603         if (SUCCEEDED(hr))
 604         {
 605             SetEvent(This->hEventStateChanged);
 606             /* If assert fails, that means a command was not processed before the thread previously terminated */
 607         }
 608         LeaveCriticalSection(This->pin.pCritSec);
 609     }
 610
 611     TRACE(" -- %x\n", hr);
 612
 613     return hr;
 614 }
 615
 616 HRESULT PullPin_StartProcessing(PullPin * This)
 617 {
 618     /* if we are connected */
 619     TRACE("(%p)->()\n", This);
 620     if(This->pAlloc)
 621     {
 622         assert(This->hThread);
 623
 624         PullPin_WaitForStateChange(This, INFINITE);
 625
 626         assert(This->state == Req_Sleepy);
 627
 628         /* Wake up! */
 629         assert(WaitForSingleObject(This->thread_sleepy, 0) == WAIT_TIMEOUT);
 630         This->state = Req_Run;
 631         This->stop_playback = FALSE;
 632         ResetEvent(This->hEventStateChanged);
 633         SetEvent(This->thread_sleepy);
 634     }
 635
 636     return S_OK;
 637 }
 638
 639 HRESULT PullPin_PauseProcessing(PullPin * This)
 640 {
 641     /* if we are connected */
 642     TRACE("(%p)->()\n", This);
 643     if(This->pAlloc)
 644     {
 645         assert(This->hThread);
 646
 647         PullPin_WaitForStateChange(This, INFINITE);
 648
 649         EnterCriticalSection(This->pin.pCritSec);
 650
 651         assert(!This->stop_playback);
 652         assert(This->state == Req_Run|| This->state == Req_Sleepy);
 653
 654         assert(WaitForSingleObject(This->thread_sleepy, 0) == WAIT_TIMEOUT);
 655
 656         This->state = Req_Pause;
 657         This->stop_playback = TRUE;
 658         ResetEvent(This->hEventStateChanged);
 659         SetEvent(This->thread_sleepy);
 660
 661         /* Release any outstanding samples */
 662         if (This->pReader)
 663         {
 664             IMediaSample *pSample;
 665             DWORD_PTR dwUser;
 666
 667             do
 668             {
 669                 pSample = NULL;
 670                 IAsyncReader_WaitForNext(This->pReader, 0, &pSample, &dwUser);
 671                 if (pSample)
 672                     IMediaSample_Release(pSample);
 673             } while(pSample);
 674         }
 675
 676         LeaveCriticalSection(This->pin.pCritSec);
 677     }
 678
 679     return S_OK;
 680 }
 681
 682 static HRESULT PullPin_StopProcessing(PullPin * This)
 683 {
 684     TRACE("(%p)->()\n", This);
 685
 686     /* if we are alive */
 687     assert(This->hThread);
 688
 689     PullPin_WaitForStateChange(This, INFINITE);
 690
 691     assert(This->state == Req_Pause || This->state == Req_Sleepy);
 692
 693     This->stop_playback = TRUE;
 694     This->state = Req_Die;
 695     assert(WaitForSingleObject(This->thread_sleepy, 0) == WAIT_TIMEOUT);
 696     ResetEvent(This->hEventStateChanged);
 697     SetEvent(This->thread_sleepy);
 698     return S_OK;
 699 }
 700
 701 HRESULT PullPin_WaitForStateChange(PullPin * This, DWORD dwMilliseconds)
 702 {
 703     if (WaitForSingleObject(This->hEventStateChanged, dwMilliseconds) == WAIT_TIMEOUT)
 704         return S_FALSE;
 705     return S_OK;
 706 }
 707
 708 HRESULT WINAPI PullPin_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 709 {
 710     PullPin *This = impl_PullPin_from_IPin(iface);
 711
 712     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 713
 714     return (This->fnQueryAccept(This->pUserData, pmt) == S_OK ? S_OK : S_FALSE);
 715 }
 716
 717 HRESULT WINAPI PullPin_EndOfStream(IPin * iface)
 718 {
 719     PullPin *This = impl_PullPin_from_IPin(iface);
 720     HRESULT hr = S_FALSE;
 721
 722     TRACE("(%p)->()\n", iface);
 723
 724     EnterCriticalSection(This->pin.pCritSec);
 725     hr = SendFurther( iface, deliver_endofstream, NULL, NULL );
 726     SetEvent(This->hEventStateChanged);
 727     LeaveCriticalSection(This->pin.pCritSec);
 728
 729     return hr;
 730 }
 731
 732 HRESULT WINAPI PullPin_BeginFlush(IPin * iface)
 733 {
 734     PullPin *This = impl_PullPin_from_IPin(iface);
 735     TRACE("(%p)->()\n", This);
 736
 737     EnterCriticalSection(This->pin.pCritSec);
 738     {
 739         SendFurther( iface, deliver_beginflush, NULL, NULL );
 740     }
 741     LeaveCriticalSection(This->pin.pCritSec);
 742
 743     EnterCriticalSection(&This->thread_lock);
 744     {
 745         if (This->pReader)
 746             IAsyncReader_BeginFlush(This->pReader);
 747         PullPin_WaitForStateChange(This, INFINITE);
 748
 749         if (This->hThread && This->state == Req_Run)
 750         {
 751             PullPin_PauseProcessing(This);
 752             PullPin_WaitForStateChange(This, INFINITE);
 753         }
 754     }
 755     LeaveCriticalSection(&This->thread_lock);
 756
 757     EnterCriticalSection(This->pin.pCritSec);
 758     {
 759         This->fnCleanProc(This->pUserData);
 760     }
 761     LeaveCriticalSection(This->pin.pCritSec);
 762
 763     return S_OK;
 764 }
 765
 766 HRESULT WINAPI PullPin_EndFlush(IPin * iface)
 767 {
 768     PullPin *This = impl_PullPin_from_IPin(iface);
 769
 770     TRACE("(%p)->()\n", iface);
 771
 772     /* Send further first: Else a race condition might terminate processing early */
 773     EnterCriticalSection(This->pin.pCritSec);
 774     SendFurther( iface, deliver_endflush, NULL, NULL );
 775     LeaveCriticalSection(This->pin.pCritSec);
 776
 777     EnterCriticalSection(&This->thread_lock);
 778     {
 779         FILTER_STATE state;
 780
 781         if (This->pReader)
 782             IAsyncReader_EndFlush(This->pReader);
 783
 784         IBaseFilter_GetState(This->pin.pinInfo.pFilter, INFINITE, &state);
 785
 786         if (state != State_Stopped)
 787             PullPin_StartProcessing(This);
 788
 789         PullPin_WaitForStateChange(This, INFINITE);
 790     }
 791     LeaveCriticalSection(&This->thread_lock);
 792
 793     return S_OK;
 794 }
 795
 796 HRESULT WINAPI PullPin_Disconnect(IPin *iface)
 797 {
 798     HRESULT hr;
 799     PullPin *This = impl_PullPin_from_IPin(iface);
 800
 801     TRACE("()\n");
 802
 803     EnterCriticalSection(This->pin.pCritSec);
 804     {
 805         if (FAILED(hr = IMemAllocator_Decommit(This->pAlloc)))
 806             ERR("Allocator decommit failed with error %x. Possible memory leak\n", hr);
 807
 808         if (This->pin.pConnectedTo)
 809         {
 810             IPin_Release(This->pin.pConnectedTo);
 811             This->pin.pConnectedTo = NULL;
 812             PullPin_StopProcessing(This);
 813
 814             FreeMediaType(&This->pin.mtCurrent);
 815             ZeroMemory(&This->pin.mtCurrent, sizeof(This->pin.mtCurrent));
 816             hr = S_OK;
 817         }
 818         else
 819             hr = S_FALSE;
 820     }
 821     LeaveCriticalSection(This->pin.pCritSec);
 822
 823     WaitForSingleObject(This->hThread, INFINITE);
 824     CloseHandle(This->hThread);
 825     This->hThread = NULL;
 826
 827     return hr;
 828 }
 829
 830 HRESULT WINAPI PullPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 831 {
 832     newsegmentargs args;
 833     FIXME("(%p)->(%s, %s, %g) stub\n", iface, wine_dbgstr_longlong(tStart), wine_dbgstr_longlong(tStop), dRate);
 834
 835     args.tStart = tStart;
 836     args.tStop = tStop;
 837     args.rate = dRate;
 838
 839     return SendFurther( iface, deliver_newsegment, &args, NULL );
 840 }