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