dlls/quartz/control.c

   1 /*
   2  * Filter Seeking and Control Interfaces
   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 /* FIXME: critical sections */
  21
  22 #include "quartz_private.h"
  23 #include "control_private.h"
  24
  25 #include "uuids.h"
  26 #include "wine/debug.h"
  27
  28 #include <assert.h>
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  31
  32 static const IMediaSeekingVtbl IMediaSeekingPassThru_Vtbl;
  33
  34 typedef struct PassThruImpl {
  35     const ISeekingPassThruVtbl *IPassThru_vtbl;
  36     const IUnknownVtbl *IInner_vtbl;
  37     const IMediaSeekingVtbl *IMediaSeeking_vtbl;
  38
  39     LONG ref;
  40     IUnknown * pUnkOuter;
  41     IPin * pin;
  42     BOOL bUnkOuterValid;
  43     BOOL bAggregatable;
  44     BOOL renderer;
  45 } PassThruImpl;
  46
  47 static HRESULT WINAPI SeekInner_QueryInterface(IUnknown * iface,
  48                                           REFIID riid,
  49                                           LPVOID *ppvObj) {
  50     ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, iface);
  51     TRACE("(%p)->(%s (%p), %p)\n", This, debugstr_guid(riid), riid, ppvObj);
  52
  53     if (This->bAggregatable)
  54         This->bUnkOuterValid = TRUE;
  55
  56     if (IsEqualGUID(&IID_IUnknown, riid))
  57     {
  58         *ppvObj = &(This->IInner_vtbl);
  59         TRACE("   returning IUnknown interface (%p)\n", *ppvObj);
  60     } else if (IsEqualGUID(&IID_ISeekingPassThru, riid)) {
  61         *ppvObj = &(This->IPassThru_vtbl);
  62         TRACE("   returning ISeekingPassThru interface (%p)\n", *ppvObj);
  63     } else if (IsEqualGUID(&IID_IMediaSeeking, riid)) {
  64         *ppvObj = &(This->IMediaSeeking_vtbl);
  65         TRACE("   returning IMediaSeeking interface (%p)\n", *ppvObj);
  66     } else {
  67         *ppvObj = NULL;
  68         FIXME("unknown interface %s\n", debugstr_guid(riid));
  69         return E_NOINTERFACE;
  70     }
  71
  72     IUnknown_AddRef((IUnknown *)(*ppvObj));
  73     return S_OK;
  74 }
  75
  76 static ULONG WINAPI SeekInner_AddRef(IUnknown * iface) {
  77     ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, iface);
  78     ULONG ref = InterlockedIncrement(&This->ref);
  79
  80     TRACE("(%p)->(): new ref = %d\n", This, ref);
  81
  82     return ref;
  83 }
  84
  85 static ULONG WINAPI SeekInner_Release(IUnknown * iface) {
  86     ICOM_THIS_MULTI(PassThruImpl, IInner_vtbl, iface);
  87     ULONG ref = InterlockedDecrement(&This->ref);
  88
  89     TRACE("(%p)->(): new ref = %d\n", This, ref);
  90
  91     if (ref == 0)
  92     {
  93         CoTaskMemFree(This);
  94     }
  95     return ref;
  96 }
  97
  98 static const IUnknownVtbl IInner_VTable =
  99 {
 100     SeekInner_QueryInterface,
 101     SeekInner_AddRef,
 102     SeekInner_Release
 103 };
 104
 105 /* Generic functions for aggregation */
 106 static HRESULT WINAPI SeekOuter_QueryInterface(PassThruImpl *This, REFIID riid, LPVOID *ppv)
 107 {
 108     if (This->bAggregatable)
 109         This->bUnkOuterValid = TRUE;
 110
 111     if (This->pUnkOuter)
 112     {
 113         if (This->bAggregatable)
 114             return IUnknown_QueryInterface(This->pUnkOuter, riid, ppv);
 115
 116         if (IsEqualIID(riid, &IID_IUnknown))
 117         {
 118             HRESULT hr;
 119
 120             IUnknown_AddRef((IUnknown *)&(This->IInner_vtbl));
 121             hr = IUnknown_QueryInterface((IUnknown *)&(This->IInner_vtbl), riid, ppv);
 122             IUnknown_Release((IUnknown *)&(This->IInner_vtbl));
 123             This->bAggregatable = TRUE;
 124             return hr;
 125         }
 126
 127         *ppv = NULL;
 128         return E_NOINTERFACE;
 129     }
 130
 131     return IUnknown_QueryInterface((IUnknown *)&(This->IInner_vtbl), riid, ppv);
 132 }
 133
 134 static ULONG WINAPI SeekOuter_AddRef(PassThruImpl *This)
 135 {
 136     if (This->pUnkOuter && This->bUnkOuterValid)
 137         return IUnknown_AddRef(This->pUnkOuter);
 138     return IUnknown_AddRef((IUnknown *)&(This->IInner_vtbl));
 139 }
 140
 141 static ULONG WINAPI SeekOuter_Release(PassThruImpl *This)
 142 {
 143     if (This->pUnkOuter && This->bUnkOuterValid)
 144         return IUnknown_Release(This->pUnkOuter);
 145     return IUnknown_Release((IUnknown *)&(This->IInner_vtbl));
 146 }
 147
 148 static HRESULT WINAPI SeekingPassThru_QueryInterface(ISeekingPassThru *iface, REFIID riid, LPVOID *ppvObj)
 149 {
 150     ICOM_THIS_MULTI(PassThruImpl, IPassThru_vtbl, iface);
 151
 152     TRACE("(%p/%p)->(%s (%p), %p)\n", This, iface, debugstr_guid(riid), riid, ppvObj);
 153
 154     return SeekOuter_QueryInterface(This, riid, ppvObj);
 155 }
 156
 157 static ULONG WINAPI SeekingPassThru_AddRef(ISeekingPassThru *iface)
 158 {
 159     ICOM_THIS_MULTI(PassThruImpl, IPassThru_vtbl, iface);
 160
 161     TRACE("(%p/%p)->()\n", This, iface);
 162
 163     return SeekOuter_AddRef(This);
 164 }
 165
 166 static ULONG WINAPI SeekingPassThru_Release(ISeekingPassThru *iface)
 167 {
 168     ICOM_THIS_MULTI(PassThruImpl, IPassThru_vtbl, iface);
 169
 170     TRACE("(%p/%p)->()\n", This, iface);
 171
 172     return SeekOuter_Release(This);
 173 }
 174
 175 static HRESULT WINAPI SeekingPassThru_Init(ISeekingPassThru *iface, BOOL renderer, IPin *pin)
 176 {
 177     ICOM_THIS_MULTI(PassThruImpl, IPassThru_vtbl, iface);
 178
 179     TRACE("(%p/%p)->(%d, %p)\n", This, iface, renderer, pin);
 180
 181     if (This->pin)
 182         FIXME("Re-initializing?\n");
 183
 184     This->renderer = renderer;
 185     This->pin = pin;
 186
 187     return S_OK;
 188 }
 189
 190 static const ISeekingPassThruVtbl ISeekingPassThru_Vtbl =
 191 {
 192     SeekingPassThru_QueryInterface,
 193     SeekingPassThru_AddRef,
 194     SeekingPassThru_Release,
 195     SeekingPassThru_Init
 196 };
 197
 198 HRESULT SeekingPassThru_create(IUnknown *pUnkOuter, LPVOID *ppObj)
 199 {
 200     PassThruImpl *fimpl;
 201
 202     TRACE("(%p,%p)\n", pUnkOuter, ppObj);
 203
 204     *ppObj = fimpl = CoTaskMemAlloc(sizeof(*fimpl));
 205     if (!fimpl)
 206         return E_OUTOFMEMORY;
 207
 208     fimpl->pUnkOuter = pUnkOuter;
 209     fimpl->bUnkOuterValid = FALSE;
 210     fimpl->bAggregatable = FALSE;
 211     fimpl->IInner_vtbl = &IInner_VTable;
 212     fimpl->IPassThru_vtbl = &ISeekingPassThru_Vtbl;
 213     fimpl->IMediaSeeking_vtbl = &IMediaSeekingPassThru_Vtbl;
 214     fimpl->ref = 1;
 215     fimpl->pin = NULL;
 216     return S_OK;
 217 }
 218
 219 typedef HRESULT (*SeekFunc)( IMediaSeeking *to, LPVOID arg );
 220
 221 static HRESULT ForwardCmdSeek( PCRITICAL_SECTION crit_sect, IBaseFilter* from, SeekFunc fnSeek, LPVOID arg )
 222 {
 223     HRESULT hr = S_OK;
 224     HRESULT hr_return = S_OK;
 225     IEnumPins *enumpins = NULL;
 226     BOOL foundend = FALSE, allnotimpl = TRUE;
 227
 228     hr = IBaseFilter_EnumPins( from, &enumpins );
 229     if (FAILED(hr))
 230         goto out;
 231
 232     hr = IEnumPins_Reset( enumpins );
 233     while (hr == S_OK) {
 234         IPin *pin = NULL;
 235         hr = IEnumPins_Next( enumpins, 1, &pin, NULL );
 236         if (hr == VFW_E_ENUM_OUT_OF_SYNC)
 237         {
 238             hr = IEnumPins_Reset( enumpins );
 239             continue;
 240         }
 241         if (pin)
 242         {
 243             PIN_DIRECTION dir;
 244
 245             IPin_QueryDirection( pin, &dir );
 246             if (dir == PINDIR_INPUT)
 247             {
 248                 IPin *connected = NULL;
 249
 250                 IPin_ConnectedTo( pin, &connected );
 251                 if (connected)
 252                 {
 253                     HRESULT hr_local;
 254                     IMediaSeeking *seek = NULL;
 255
 256                     hr_local = IPin_QueryInterface( connected, &IID_IMediaSeeking, (void**)&seek );
 257                     if (hr_local == S_OK)
 258                     {
 259                         foundend = TRUE;
 260                         if (crit_sect)
 261                         {
 262                             LeaveCriticalSection( crit_sect );
 263                             hr_local = fnSeek( seek , arg );
 264                             EnterCriticalSection( crit_sect );
 265                         }
 266                         else
 267                             hr_local = fnSeek( seek , arg );
 268
 269                         if (hr_local != E_NOTIMPL)
 270                             allnotimpl = FALSE;
 271
 272                         hr_return = updatehres( hr_return, hr_local );
 273                         IMediaSeeking_Release( seek );
 274                     }
 275                     IPin_Release(connected);
 276                 }
 277             }
 278             IPin_Release( pin );
 279         }
 280     }
 281     if (foundend && allnotimpl)
 282         hr = E_NOTIMPL;
 283     else
 284         hr = hr_return;
 285
 286 out:
 287     TRACE("Returning: %08x\n", hr);
 288     return hr;
 289 }
 290
 291
 292 HRESULT MediaSeekingImpl_Init(IBaseFilter *pUserData, CHANGEPROC fnChangeStop, CHANGEPROC fnChangeCurrent, CHANGEPROC fnChangeRate, MediaSeekingImpl * pSeeking, PCRITICAL_SECTION crit_sect)
 293 {
 294     assert(fnChangeStop && fnChangeCurrent && fnChangeRate);
 295
 296     pSeeking->refCount = 1;
 297     pSeeking->pUserData = pUserData;
 298     pSeeking->fnChangeRate = fnChangeRate;
 299     pSeeking->fnChangeStop = fnChangeStop;
 300     pSeeking->fnChangeCurrent = fnChangeCurrent;
 301     pSeeking->dwCapabilities = AM_SEEKING_CanSeekForwards |
 302         AM_SEEKING_CanSeekBackwards |
 303         AM_SEEKING_CanSeekAbsolute |
 304         AM_SEEKING_CanGetStopPos |
 305         AM_SEEKING_CanGetDuration;
 306     pSeeking->llCurrent = 0;
 307     pSeeking->llStop = ((ULONGLONG)0x80000000) << 32;
 308     pSeeking->llDuration = pSeeking->llStop;
 309     pSeeking->dRate = 1.0;
 310     pSeeking->timeformat = TIME_FORMAT_MEDIA_TIME;
 311     pSeeking->crst = crit_sect;
 312
 313     return S_OK;
 314 }
 315
 316 struct pos_args {
 317     LONGLONG* current, *stop;
 318     DWORD curflags, stopflags;
 319 };
 320
 321 static HRESULT fwd_setposition(IMediaSeeking *seek, LPVOID pargs)
 322 {
 323     struct pos_args *args = (void*)pargs;
 324
 325     return IMediaSeeking_SetPositions(seek, args->current, args->curflags, args->stop, args->stopflags);
 326 }
 327
 328 static HRESULT fwd_checkcaps(IMediaSeeking *iface, LPVOID pcaps)
 329 {
 330     DWORD *caps = pcaps;
 331     return IMediaSeeking_CheckCapabilities(iface, caps);
 332 }
 333
 334 static HRESULT fwd_settimeformat(IMediaSeeking *iface, LPVOID pformat)
 335 {
 336     const GUID *format = pformat;
 337     return IMediaSeeking_SetTimeFormat(iface, format);
 338 }
 339
 340 static HRESULT fwd_getduration(IMediaSeeking *iface, LPVOID pdur)
 341 {
 342     LONGLONG *duration = pdur;
 343     LONGLONG mydur = *duration;
 344     HRESULT hr;
 345
 346     hr = IMediaSeeking_GetDuration(iface, &mydur);
 347     if (FAILED(hr))
 348         return hr;
 349
 350     if ((mydur < *duration) || (*duration < 0 && mydur > 0))
 351         *duration = mydur;
 352     return hr;
 353 }
 354
 355 static HRESULT fwd_getstopposition(IMediaSeeking *iface, LPVOID pdur)
 356 {
 357     LONGLONG *duration = pdur;
 358     LONGLONG mydur = *duration;
 359     HRESULT hr;
 360
 361     hr = IMediaSeeking_GetStopPosition(iface, &mydur);
 362     if (FAILED(hr))
 363         return hr;
 364
 365     if ((mydur < *duration) || (*duration < 0 && mydur > 0))
 366         *duration = mydur;
 367     return hr;
 368 }
 369
 370 static HRESULT fwd_getcurposition(IMediaSeeking *iface, LPVOID pdur)
 371 {
 372     LONGLONG *duration = pdur;
 373     LONGLONG mydur = *duration;
 374     HRESULT hr;
 375
 376     hr = IMediaSeeking_GetCurrentPosition(iface, &mydur);
 377     if (FAILED(hr))
 378         return hr;
 379
 380     if ((mydur < *duration) || (*duration < 0 && mydur > 0))
 381         *duration = mydur;
 382     return hr;
 383 }
 384
 385 static HRESULT fwd_setrate(IMediaSeeking *iface, LPVOID prate)
 386 {
 387     double *rate = prate;
 388
 389     HRESULT hr;
 390
 391     hr = IMediaSeeking_SetRate(iface, *rate);
 392     if (FAILED(hr))
 393         return hr;
 394
 395     return hr;
 396 }
 397
 398
 399 HRESULT WINAPI MediaSeekingImpl_GetCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
 400 {
 401     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 402
 403     TRACE("(%p)\n", pCapabilities);
 404
 405     *pCapabilities = This->dwCapabilities;
 406
 407     return S_OK;
 408 }
 409
 410 HRESULT WINAPI MediaSeekingImpl_CheckCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
 411 {
 412     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 413     HRESULT hr;
 414     DWORD dwCommonCaps;
 415
 416     TRACE("(%p)\n", pCapabilities);
 417
 418     if (!pCapabilities)
 419         return E_POINTER;
 420
 421     EnterCriticalSection(This->crst);
 422     hr = ForwardCmdSeek(This->crst, This->pUserData, fwd_checkcaps, pCapabilities);
 423     LeaveCriticalSection(This->crst);
 424     if (FAILED(hr) && hr != E_NOTIMPL)
 425         return hr;
 426
 427     dwCommonCaps = *pCapabilities & This->dwCapabilities;
 428
 429     if (!dwCommonCaps)
 430         hr = E_FAIL;
 431     else
 432         hr = (*pCapabilities == dwCommonCaps) ?  S_OK : S_FALSE;
 433     *pCapabilities = dwCommonCaps;
 434
 435     return hr;
 436 }
 437
 438 HRESULT WINAPI MediaSeekingImpl_IsFormatSupported(IMediaSeeking * iface, const GUID * pFormat)
 439 {
 440     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 441
 442     return (IsEqualIID(pFormat, &TIME_FORMAT_MEDIA_TIME) ? S_OK : S_FALSE);
 443 }
 444
 445 HRESULT WINAPI MediaSeekingImpl_QueryPreferredFormat(IMediaSeeking * iface, GUID * pFormat)
 446 {
 447     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 448
 449     *pFormat = TIME_FORMAT_MEDIA_TIME;
 450     return S_OK;
 451 }
 452
 453 HRESULT WINAPI MediaSeekingImpl_GetTimeFormat(IMediaSeeking * iface, GUID * pFormat)
 454 {
 455     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 456     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 457
 458     EnterCriticalSection(This->crst);
 459     *pFormat = This->timeformat;
 460     LeaveCriticalSection(This->crst);
 461
 462     return S_OK;
 463 }
 464
 465 HRESULT WINAPI MediaSeekingImpl_IsUsingTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
 466 {
 467     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 468     HRESULT hr = S_OK;
 469
 470     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 471
 472     EnterCriticalSection(This->crst);
 473     if (!IsEqualIID(pFormat, &This->timeformat))
 474         hr = S_FALSE;
 475     LeaveCriticalSection(This->crst);
 476
 477     return hr;
 478 }
 479
 480
 481 HRESULT WINAPI MediaSeekingImpl_SetTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
 482 {
 483     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 484     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 485
 486     EnterCriticalSection(This->crst);
 487     ForwardCmdSeek(This->crst, This->pUserData, fwd_settimeformat, (LPVOID)pFormat);
 488     LeaveCriticalSection(This->crst);
 489
 490     return (IsEqualIID(pFormat, &TIME_FORMAT_MEDIA_TIME) ? S_OK : S_FALSE);
 491 }
 492
 493
 494 HRESULT WINAPI MediaSeekingImpl_GetDuration(IMediaSeeking * iface, LONGLONG * pDuration)
 495 {
 496     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 497
 498     TRACE("(%p)\n", pDuration);
 499
 500     EnterCriticalSection(This->crst);
 501     *pDuration = This->llDuration;
 502     ForwardCmdSeek(This->crst, This->pUserData, fwd_getduration, pDuration);
 503     LeaveCriticalSection(This->crst);
 504
 505     return S_OK;
 506 }
 507
 508 HRESULT WINAPI MediaSeekingImpl_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop)
 509 {
 510     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 511
 512     TRACE("(%p)\n", pStop);
 513
 514     EnterCriticalSection(This->crst);
 515     *pStop = This->llStop;
 516     ForwardCmdSeek(This->crst, This->pUserData, fwd_getstopposition, pStop);
 517     LeaveCriticalSection(This->crst);
 518
 519     return S_OK;
 520 }
 521
 522 /* FIXME: Make use of the info the filter should expose */
 523 HRESULT WINAPI MediaSeekingImpl_GetCurrentPosition(IMediaSeeking * iface, LONGLONG * pCurrent)
 524 {
 525     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 526
 527     TRACE("(%p)\n", pCurrent);
 528
 529     EnterCriticalSection(This->crst);
 530     *pCurrent = This->llCurrent;
 531     ForwardCmdSeek(This->crst, This->pUserData, fwd_getcurposition, pCurrent);
 532     LeaveCriticalSection(This->crst);
 533
 534     return S_OK;
 535 }
 536
 537 HRESULT WINAPI MediaSeekingImpl_ConvertTimeFormat(IMediaSeeking * iface, LONGLONG * pTarget, const GUID * pTargetFormat, LONGLONG Source, const GUID * pSourceFormat)
 538 {
 539     if (IsEqualIID(pTargetFormat, &TIME_FORMAT_MEDIA_TIME) && IsEqualIID(pSourceFormat, &TIME_FORMAT_MEDIA_TIME))
 540     {
 541         *pTarget = Source;
 542         return S_OK;
 543     }
 544     /* FIXME: clear pTarget? */
 545     return E_INVALIDARG;
 546 }
 547
 548 static inline LONGLONG Adjust(LONGLONG value, const LONGLONG * pModifier, DWORD dwFlags)
 549 {
 550     switch (dwFlags & AM_SEEKING_PositioningBitsMask)
 551     {
 552     case AM_SEEKING_NoPositioning:
 553         return value;
 554     case AM_SEEKING_AbsolutePositioning:
 555         return *pModifier;
 556     case AM_SEEKING_RelativePositioning:
 557     case AM_SEEKING_IncrementalPositioning:
 558         return value + *pModifier;
 559     default:
 560         assert(FALSE);
 561         return 0;
 562     }
 563 }
 564
 565 HRESULT WINAPI MediaSeekingImpl_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags)
 566 {
 567     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 568     BOOL bChangeCurrent = FALSE, bChangeStop = FALSE;
 569     LONGLONG llNewCurrent, llNewStop;
 570     struct pos_args args;
 571
 572     TRACE("(%p, %x, %p, %x)\n", pCurrent, dwCurrentFlags, pStop, dwStopFlags);
 573
 574     args.current = pCurrent;
 575     args.stop = pStop;
 576     args.curflags = dwCurrentFlags;
 577     args.stopflags = dwStopFlags;
 578
 579     EnterCriticalSection(This->crst);
 580
 581     llNewCurrent = Adjust(This->llCurrent, pCurrent, dwCurrentFlags);
 582     llNewStop = Adjust(This->llStop, pStop, dwStopFlags);
 583
 584     if (pCurrent)
 585         bChangeCurrent = TRUE;
 586     if (llNewStop != This->llStop)
 587         bChangeStop = TRUE;
 588
 589     TRACE("Old: %u, New: %u\n", (DWORD)(This->llCurrent/10000000), (DWORD)(llNewCurrent/10000000));
 590
 591     This->llCurrent = llNewCurrent;
 592     This->llStop = llNewStop;
 593
 594     if (dwCurrentFlags & AM_SEEKING_ReturnTime)
 595         *pCurrent = llNewCurrent;
 596     if (dwStopFlags & AM_SEEKING_ReturnTime)
 597         *pStop = llNewStop;
 598
 599     ForwardCmdSeek(This->crst, This->pUserData, fwd_setposition, &args);
 600     LeaveCriticalSection(This->crst);
 601
 602     if (bChangeCurrent)
 603         This->fnChangeCurrent(This->pUserData);
 604     if (bChangeStop)
 605         This->fnChangeStop(This->pUserData);
 606
 607     return S_OK;
 608 }
 609
 610 HRESULT WINAPI MediaSeekingImpl_GetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, LONGLONG * pStop)
 611 {
 612     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 613
 614     TRACE("(%p, %p)\n", pCurrent, pStop);
 615
 616     EnterCriticalSection(This->crst);
 617     *pCurrent = This->llCurrent;
 618     *pStop = This->llStop;
 619     LeaveCriticalSection(This->crst);
 620
 621     return S_OK;
 622 }
 623
 624 HRESULT WINAPI MediaSeekingImpl_GetAvailable(IMediaSeeking * iface, LONGLONG * pEarliest, LONGLONG * pLatest)
 625 {
 626     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 627
 628     TRACE("(%p, %p)\n", pEarliest, pLatest);
 629
 630     EnterCriticalSection(This->crst);
 631     *pEarliest = 0;
 632     *pLatest = This->llDuration;
 633     LeaveCriticalSection(This->crst);
 634
 635     return S_OK;
 636 }
 637
 638 HRESULT WINAPI MediaSeekingImpl_SetRate(IMediaSeeking * iface, double dRate)
 639 {
 640     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 641     BOOL bChangeRate = (dRate != This->dRate);
 642     HRESULT hr = S_OK;
 643
 644     TRACE("(%e)\n", dRate);
 645
 646     if (dRate > 100 || dRate < .001)
 647     {
 648         FIXME("Excessive rate %e, ignoring\n", dRate);
 649         return VFW_E_UNSUPPORTED_AUDIO;
 650     }
 651
 652     EnterCriticalSection(This->crst);
 653     This->dRate = dRate;
 654     if (bChangeRate)
 655         hr = This->fnChangeRate(This->pUserData);
 656     ForwardCmdSeek(This->crst, This->pUserData, fwd_setrate, &dRate);
 657     LeaveCriticalSection(This->crst);
 658
 659     return hr;
 660 }
 661
 662 HRESULT WINAPI MediaSeekingImpl_GetRate(IMediaSeeking * iface, double * dRate)
 663 {
 664     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 665
 666     TRACE("(%p)\n", dRate);
 667
 668     EnterCriticalSection(This->crst);
 669     /* Forward? */
 670     *dRate = This->dRate;
 671     LeaveCriticalSection(This->crst);
 672
 673     return S_OK;
 674 }
 675
 676 HRESULT WINAPI MediaSeekingImpl_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll)
 677 {
 678     TRACE("(%p)\n", pPreroll);
 679
 680     *pPreroll = 0;
 681     return S_OK;
 682 }
 683
 684 static HRESULT WINAPI MediaSeekingPassThru_QueryInterface(IMediaSeeking *iface, REFIID riid, LPVOID *ppvObj)
 685 {
 686     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 687
 688     TRACE("(%p/%p)->(%s (%p), %p)\n", This, iface, debugstr_guid(riid), riid, ppvObj);
 689
 690     return SeekOuter_QueryInterface(This, riid, ppvObj);
 691 }
 692
 693 static ULONG WINAPI MediaSeekingPassThru_AddRef(IMediaSeeking *iface)
 694 {
 695     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 696
 697     TRACE("(%p/%p)->()\n", iface, This);
 698
 699     return SeekOuter_AddRef(This);
 700 }
 701
 702 static ULONG WINAPI MediaSeekingPassThru_Release(IMediaSeeking *iface)
 703 {
 704     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 705
 706     TRACE("(%p/%p)->()\n", iface, This);
 707
 708     return SeekOuter_Release(This);
 709 }
 710
 711 static HRESULT WINAPI MediaSeekingPassThru_GetCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
 712 {
 713     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 714
 715     TRACE("(%p/%p)->(%p)\n", iface, This, pCapabilities);
 716
 717     FIXME("stub\n");
 718     return E_NOTIMPL;
 719 }
 720
 721 static HRESULT WINAPI MediaSeekingPassThru_CheckCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
 722 {
 723     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 724
 725     TRACE("(%p/%p)->(%p)\n", iface, This, pCapabilities);
 726
 727     if (!pCapabilities)
 728         return E_POINTER;
 729
 730     FIXME("stub\n");
 731     return E_NOTIMPL;
 732 }
 733
 734 static HRESULT WINAPI MediaSeekingPassThru_IsFormatSupported(IMediaSeeking * iface, const GUID * pFormat)
 735 {
 736     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 737     TRACE("(%p/%p)->(%s)\n", iface, This, qzdebugstr_guid(pFormat));
 738
 739     FIXME("stub\n");
 740     return E_NOTIMPL;
 741 }
 742
 743 static HRESULT WINAPI MediaSeekingPassThru_QueryPreferredFormat(IMediaSeeking * iface, GUID * pFormat)
 744 {
 745     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 746     TRACE("(%p/%p)->(%p)\n", iface, This, pFormat);
 747
 748     FIXME("stub\n");
 749     return E_NOTIMPL;
 750 }
 751
 752 static HRESULT WINAPI MediaSeekingPassThru_GetTimeFormat(IMediaSeeking * iface, GUID * pFormat)
 753 {
 754     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 755     TRACE("(%p/%p)->(%p)\n", iface, This, pFormat);
 756
 757     FIXME("stub\n");
 758     return E_NOTIMPL;
 759 }
 760
 761 static HRESULT WINAPI MediaSeekingPassThru_IsUsingTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
 762 {
 763     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 764
 765     TRACE("(%p/%p)->(%s)\n", iface, This, qzdebugstr_guid(pFormat));
 766
 767     FIXME("stub\n");
 768     return E_NOTIMPL;
 769 }
 770
 771
 772 static HRESULT WINAPI MediaSeekingPassThru_SetTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
 773 {
 774     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 775     TRACE("(%p/%p)->(%s)\n", iface, This, qzdebugstr_guid(pFormat));
 776
 777     FIXME("stub\n");
 778     return E_NOTIMPL;
 779 }
 780
 781
 782 static HRESULT WINAPI MediaSeekingPassThru_GetDuration(IMediaSeeking * iface, LONGLONG * pDuration)
 783 {
 784     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 785     PIN_INFO info;
 786     HRESULT hr;
 787
 788     TRACE("(%p/%p)->(%p)\n", iface, This, pDuration);
 789
 790     IPin_QueryPinInfo(This->pin, &info);
 791
 792     hr = ForwardCmdSeek(NULL, info.pFilter, fwd_getduration, pDuration);
 793     IBaseFilter_Release(info.pFilter);
 794
 795     return hr;
 796 }
 797
 798 static HRESULT WINAPI MediaSeekingPassThru_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop)
 799 {
 800     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 801
 802     TRACE("(%p/%p)->(%p)\n", iface, This, pStop);
 803
 804     FIXME("stub\n");
 805     return E_NOTIMPL;
 806 }
 807
 808 /* FIXME: Make use of the info the filter should expose */
 809 static HRESULT WINAPI MediaSeekingPassThru_GetCurrentPosition(IMediaSeeking * iface, LONGLONG * pCurrent)
 810 {
 811     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 812
 813     TRACE("(%p/%p)->(%p)\n", iface, This, pCurrent);
 814
 815     FIXME("stub\n");
 816     return E_NOTIMPL;
 817 }
 818
 819 static HRESULT WINAPI MediaSeekingPassThru_ConvertTimeFormat(IMediaSeeking * iface, LONGLONG * pTarget, const GUID * pTargetFormat, LONGLONG Source, const GUID * pSourceFormat)
 820 {
 821     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 822
 823     TRACE("(%p/%p)->(%p,%s,%x%08x,%s)\n", iface, This, pTarget, debugstr_guid(pTargetFormat), (DWORD)(Source>>32), (DWORD)Source, debugstr_guid(pSourceFormat));
 824
 825     FIXME("stub\n");
 826     return E_NOTIMPL;
 827 }
 828
 829 static HRESULT WINAPI MediaSeekingPassThru_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags)
 830 {
 831     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 832     struct pos_args args;
 833     PIN_INFO info;
 834     HRESULT hr;
 835
 836     TRACE("(%p/%p)->(%p, %p)\n", iface, This, pCurrent, pStop);
 837     args.current = pCurrent;
 838     args.stop = pStop;
 839     args.curflags = dwCurrentFlags;
 840     args.stopflags = dwStopFlags;
 841
 842     IPin_QueryPinInfo(This->pin, &info);
 843
 844     hr = ForwardCmdSeek(NULL, info.pFilter, fwd_setposition, &args);
 845     IBaseFilter_Release(info.pFilter);
 846     return hr;
 847 }
 848
 849 static HRESULT WINAPI MediaSeekingPassThru_GetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, LONGLONG * pStop)
 850 {
 851     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 852
 853     TRACE("(%p/%p)->(%p, %p)\n", iface, This, pCurrent, pStop);
 854
 855     FIXME("stub\n");
 856     return E_NOTIMPL;
 857 }
 858
 859 static HRESULT WINAPI MediaSeekingPassThru_GetAvailable(IMediaSeeking * iface, LONGLONG * pEarliest, LONGLONG * pLatest)
 860 {
 861     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 862
 863     TRACE("(%p/%p)->(%p,%p)\n", iface, This, pEarliest, pLatest);
 864
 865     FIXME("stub\n");
 866     return E_NOTIMPL;
 867 }
 868
 869 static HRESULT WINAPI MediaSeekingPassThru_SetRate(IMediaSeeking * iface, double dRate)
 870 {
 871     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 872
 873     TRACE("(%p/%p)->(%e)\n", iface, This, dRate);
 874
 875     FIXME("stub\n");
 876     return E_NOTIMPL;
 877 }
 878
 879 static HRESULT WINAPI MediaSeekingPassThru_GetRate(IMediaSeeking * iface, double * dRate)
 880 {
 881     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 882
 883     TRACE("(%p/%p)->(%p)\n", iface, This, dRate);
 884
 885     FIXME("stub\n");
 886     return E_NOTIMPL;
 887 }
 888
 889 static HRESULT WINAPI MediaSeekingPassThru_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll)
 890 {
 891     TRACE("(%p)\n", pPreroll);
 892
 893     FIXME("stub\n");
 894     return E_NOTIMPL;
 895 }
 896
 897 static const IMediaSeekingVtbl IMediaSeekingPassThru_Vtbl =
 898 {
 899     MediaSeekingPassThru_QueryInterface,
 900     MediaSeekingPassThru_AddRef,
 901     MediaSeekingPassThru_Release,
 902     MediaSeekingPassThru_GetCapabilities,
 903     MediaSeekingPassThru_CheckCapabilities,
 904     MediaSeekingPassThru_IsFormatSupported,
 905     MediaSeekingPassThru_QueryPreferredFormat,
 906     MediaSeekingPassThru_GetTimeFormat,
 907     MediaSeekingPassThru_IsUsingTimeFormat,
 908     MediaSeekingPassThru_SetTimeFormat,
 909     MediaSeekingPassThru_GetDuration,
 910     MediaSeekingPassThru_GetStopPosition,
 911     MediaSeekingPassThru_GetCurrentPosition,
 912     MediaSeekingPassThru_ConvertTimeFormat,
 913     MediaSeekingPassThru_SetPositions,
 914     MediaSeekingPassThru_GetPositions,
 915     MediaSeekingPassThru_GetAvailable,
 916     MediaSeekingPassThru_SetRate,
 917     MediaSeekingPassThru_GetRate,
 918     MediaSeekingPassThru_GetPreroll
 919 };