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 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 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 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     IEnumPins_Release( enumpins );
 282
 283     if (foundend && allnotimpl)
 284         hr = E_NOTIMPL;
 285     else
 286         hr = hr_return;
 287
 288 out:
 289     TRACE("Returning: %08x\n", hr);
 290     return hr;
 291 }
 292
 293
 294 HRESULT MediaSeekingImpl_Init(IBaseFilter *pUserData, CHANGEPROC fnChangeStop, CHANGEPROC fnChangeCurrent, CHANGEPROC fnChangeRate, MediaSeekingImpl * pSeeking, PCRITICAL_SECTION crit_sect)
 295 {
 296     assert(fnChangeStop && fnChangeCurrent && fnChangeRate);
 297
 298     pSeeking->refCount = 1;
 299     pSeeking->pUserData = pUserData;
 300     pSeeking->fnChangeRate = fnChangeRate;
 301     pSeeking->fnChangeStop = fnChangeStop;
 302     pSeeking->fnChangeCurrent = fnChangeCurrent;
 303     pSeeking->dwCapabilities = AM_SEEKING_CanSeekForwards |
 304         AM_SEEKING_CanSeekBackwards |
 305         AM_SEEKING_CanSeekAbsolute |
 306         AM_SEEKING_CanGetStopPos |
 307         AM_SEEKING_CanGetDuration;
 308     pSeeking->llCurrent = 0;
 309     pSeeking->llStop = ((ULONGLONG)0x80000000) << 32;
 310     pSeeking->llDuration = pSeeking->llStop;
 311     pSeeking->dRate = 1.0;
 312     pSeeking->timeformat = TIME_FORMAT_MEDIA_TIME;
 313     pSeeking->crst = crit_sect;
 314
 315     return S_OK;
 316 }
 317
 318 struct pos_args {
 319     LONGLONG* current, *stop;
 320     DWORD curflags, stopflags;
 321 };
 322
 323 static HRESULT fwd_setposition(IMediaSeeking *seek, LPVOID pargs)
 324 {
 325     struct pos_args *args = (void*)pargs;
 326
 327     return IMediaSeeking_SetPositions(seek, args->current, args->curflags, args->stop, args->stopflags);
 328 }
 329
 330 static HRESULT fwd_checkcaps(IMediaSeeking *iface, LPVOID pcaps)
 331 {
 332     DWORD *caps = pcaps;
 333     return IMediaSeeking_CheckCapabilities(iface, caps);
 334 }
 335
 336 static HRESULT fwd_settimeformat(IMediaSeeking *iface, LPVOID pformat)
 337 {
 338     const GUID *format = pformat;
 339     return IMediaSeeking_SetTimeFormat(iface, format);
 340 }
 341
 342 static HRESULT fwd_getduration(IMediaSeeking *iface, LPVOID pdur)
 343 {
 344     LONGLONG *duration = pdur;
 345     LONGLONG mydur = *duration;
 346     HRESULT hr;
 347
 348     hr = IMediaSeeking_GetDuration(iface, &mydur);
 349     if (FAILED(hr))
 350         return hr;
 351
 352     if ((mydur < *duration) || (*duration < 0 && mydur > 0))
 353         *duration = mydur;
 354     return hr;
 355 }
 356
 357 static HRESULT fwd_getstopposition(IMediaSeeking *iface, LPVOID pdur)
 358 {
 359     LONGLONG *duration = pdur;
 360     LONGLONG mydur = *duration;
 361     HRESULT hr;
 362
 363     hr = IMediaSeeking_GetStopPosition(iface, &mydur);
 364     if (FAILED(hr))
 365         return hr;
 366
 367     if ((mydur < *duration) || (*duration < 0 && mydur > 0))
 368         *duration = mydur;
 369     return hr;
 370 }
 371
 372 static HRESULT fwd_getcurposition(IMediaSeeking *iface, LPVOID pdur)
 373 {
 374     LONGLONG *duration = pdur;
 375     LONGLONG mydur = *duration;
 376     HRESULT hr;
 377
 378     hr = IMediaSeeking_GetCurrentPosition(iface, &mydur);
 379     if (FAILED(hr))
 380         return hr;
 381
 382     if ((mydur < *duration) || (*duration < 0 && mydur > 0))
 383         *duration = mydur;
 384     return hr;
 385 }
 386
 387 static HRESULT fwd_setrate(IMediaSeeking *iface, LPVOID prate)
 388 {
 389     double *rate = prate;
 390
 391     HRESULT hr;
 392
 393     hr = IMediaSeeking_SetRate(iface, *rate);
 394     if (FAILED(hr))
 395         return hr;
 396
 397     return hr;
 398 }
 399
 400
 401 HRESULT WINAPI MediaSeekingImpl_GetCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
 402 {
 403     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 404
 405     TRACE("(%p)\n", pCapabilities);
 406
 407     *pCapabilities = This->dwCapabilities;
 408
 409     return S_OK;
 410 }
 411
 412 HRESULT WINAPI MediaSeekingImpl_CheckCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
 413 {
 414     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 415     HRESULT hr;
 416     DWORD dwCommonCaps;
 417
 418     TRACE("(%p)\n", pCapabilities);
 419
 420     if (!pCapabilities)
 421         return E_POINTER;
 422
 423     EnterCriticalSection(This->crst);
 424     hr = ForwardCmdSeek(This->crst, This->pUserData, fwd_checkcaps, pCapabilities);
 425     LeaveCriticalSection(This->crst);
 426     if (FAILED(hr) && hr != E_NOTIMPL)
 427         return hr;
 428
 429     dwCommonCaps = *pCapabilities & This->dwCapabilities;
 430
 431     if (!dwCommonCaps)
 432         hr = E_FAIL;
 433     else
 434         hr = (*pCapabilities == dwCommonCaps) ?  S_OK : S_FALSE;
 435     *pCapabilities = dwCommonCaps;
 436
 437     return hr;
 438 }
 439
 440 HRESULT WINAPI MediaSeekingImpl_IsFormatSupported(IMediaSeeking * iface, const GUID * pFormat)
 441 {
 442     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 443
 444     return (IsEqualIID(pFormat, &TIME_FORMAT_MEDIA_TIME) ? S_OK : S_FALSE);
 445 }
 446
 447 HRESULT WINAPI MediaSeekingImpl_QueryPreferredFormat(IMediaSeeking * iface, GUID * pFormat)
 448 {
 449     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 450
 451     *pFormat = TIME_FORMAT_MEDIA_TIME;
 452     return S_OK;
 453 }
 454
 455 HRESULT WINAPI MediaSeekingImpl_GetTimeFormat(IMediaSeeking * iface, GUID * pFormat)
 456 {
 457     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 458     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 459
 460     EnterCriticalSection(This->crst);
 461     *pFormat = This->timeformat;
 462     LeaveCriticalSection(This->crst);
 463
 464     return S_OK;
 465 }
 466
 467 HRESULT WINAPI MediaSeekingImpl_IsUsingTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
 468 {
 469     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 470     HRESULT hr = S_OK;
 471
 472     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 473
 474     EnterCriticalSection(This->crst);
 475     if (!IsEqualIID(pFormat, &This->timeformat))
 476         hr = S_FALSE;
 477     LeaveCriticalSection(This->crst);
 478
 479     return hr;
 480 }
 481
 482
 483 HRESULT WINAPI MediaSeekingImpl_SetTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
 484 {
 485     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 486     TRACE("(%s)\n", qzdebugstr_guid(pFormat));
 487
 488     EnterCriticalSection(This->crst);
 489     ForwardCmdSeek(This->crst, This->pUserData, fwd_settimeformat, (LPVOID)pFormat);
 490     LeaveCriticalSection(This->crst);
 491
 492     return (IsEqualIID(pFormat, &TIME_FORMAT_MEDIA_TIME) ? S_OK : S_FALSE);
 493 }
 494
 495
 496 HRESULT WINAPI MediaSeekingImpl_GetDuration(IMediaSeeking * iface, LONGLONG * pDuration)
 497 {
 498     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 499
 500     TRACE("(%p)\n", pDuration);
 501
 502     EnterCriticalSection(This->crst);
 503     *pDuration = This->llDuration;
 504     ForwardCmdSeek(This->crst, This->pUserData, fwd_getduration, pDuration);
 505     LeaveCriticalSection(This->crst);
 506
 507     return S_OK;
 508 }
 509
 510 HRESULT WINAPI MediaSeekingImpl_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop)
 511 {
 512     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 513
 514     TRACE("(%p)\n", pStop);
 515
 516     EnterCriticalSection(This->crst);
 517     *pStop = This->llStop;
 518     ForwardCmdSeek(This->crst, This->pUserData, fwd_getstopposition, pStop);
 519     LeaveCriticalSection(This->crst);
 520
 521     return S_OK;
 522 }
 523
 524 /* FIXME: Make use of the info the filter should expose */
 525 HRESULT WINAPI MediaSeekingImpl_GetCurrentPosition(IMediaSeeking * iface, LONGLONG * pCurrent)
 526 {
 527     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 528
 529     TRACE("(%p)\n", pCurrent);
 530
 531     EnterCriticalSection(This->crst);
 532     *pCurrent = This->llCurrent;
 533     ForwardCmdSeek(This->crst, This->pUserData, fwd_getcurposition, pCurrent);
 534     LeaveCriticalSection(This->crst);
 535
 536     return S_OK;
 537 }
 538
 539 HRESULT WINAPI MediaSeekingImpl_ConvertTimeFormat(IMediaSeeking * iface, LONGLONG * pTarget, const GUID * pTargetFormat, LONGLONG Source, const GUID * pSourceFormat)
 540 {
 541     if (IsEqualIID(pTargetFormat, &TIME_FORMAT_MEDIA_TIME) && IsEqualIID(pSourceFormat, &TIME_FORMAT_MEDIA_TIME))
 542     {
 543         *pTarget = Source;
 544         return S_OK;
 545     }
 546     /* FIXME: clear pTarget? */
 547     return E_INVALIDARG;
 548 }
 549
 550 static inline LONGLONG Adjust(LONGLONG value, const LONGLONG * pModifier, DWORD dwFlags)
 551 {
 552     switch (dwFlags & AM_SEEKING_PositioningBitsMask)
 553     {
 554     case AM_SEEKING_NoPositioning:
 555         return value;
 556     case AM_SEEKING_AbsolutePositioning:
 557         return *pModifier;
 558     case AM_SEEKING_RelativePositioning:
 559     case AM_SEEKING_IncrementalPositioning:
 560         return value + *pModifier;
 561     default:
 562         assert(FALSE);
 563         return 0;
 564     }
 565 }
 566
 567 HRESULT WINAPI MediaSeekingImpl_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags)
 568 {
 569     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 570     BOOL bChangeCurrent = FALSE, bChangeStop = FALSE;
 571     LONGLONG llNewCurrent, llNewStop;
 572     struct pos_args args;
 573
 574     TRACE("(%p, %x, %p, %x)\n", pCurrent, dwCurrentFlags, pStop, dwStopFlags);
 575
 576     args.current = pCurrent;
 577     args.stop = pStop;
 578     args.curflags = dwCurrentFlags;
 579     args.stopflags = dwStopFlags;
 580
 581     EnterCriticalSection(This->crst);
 582
 583     llNewCurrent = Adjust(This->llCurrent, pCurrent, dwCurrentFlags);
 584     llNewStop = Adjust(This->llStop, pStop, dwStopFlags);
 585
 586     if (pCurrent)
 587         bChangeCurrent = TRUE;
 588     if (llNewStop != This->llStop)
 589         bChangeStop = TRUE;
 590
 591     TRACE("Old: %u, New: %u\n", (DWORD)(This->llCurrent/10000000), (DWORD)(llNewCurrent/10000000));
 592
 593     This->llCurrent = llNewCurrent;
 594     This->llStop = llNewStop;
 595
 596     if (pCurrent && (dwCurrentFlags & AM_SEEKING_ReturnTime))
 597         *pCurrent = llNewCurrent;
 598     if (pStop && (dwStopFlags & AM_SEEKING_ReturnTime))
 599         *pStop = llNewStop;
 600
 601     ForwardCmdSeek(This->crst, This->pUserData, fwd_setposition, &args);
 602     LeaveCriticalSection(This->crst);
 603
 604     if (bChangeCurrent)
 605         This->fnChangeCurrent(This->pUserData);
 606     if (bChangeStop)
 607         This->fnChangeStop(This->pUserData);
 608
 609     return S_OK;
 610 }
 611
 612 HRESULT WINAPI MediaSeekingImpl_GetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, LONGLONG * pStop)
 613 {
 614     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 615
 616     TRACE("(%p, %p)\n", pCurrent, pStop);
 617
 618     EnterCriticalSection(This->crst);
 619     *pCurrent = This->llCurrent;
 620     *pStop = This->llStop;
 621     LeaveCriticalSection(This->crst);
 622
 623     return S_OK;
 624 }
 625
 626 HRESULT WINAPI MediaSeekingImpl_GetAvailable(IMediaSeeking * iface, LONGLONG * pEarliest, LONGLONG * pLatest)
 627 {
 628     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 629
 630     TRACE("(%p, %p)\n", pEarliest, pLatest);
 631
 632     EnterCriticalSection(This->crst);
 633     *pEarliest = 0;
 634     *pLatest = This->llDuration;
 635     LeaveCriticalSection(This->crst);
 636
 637     return S_OK;
 638 }
 639
 640 HRESULT WINAPI MediaSeekingImpl_SetRate(IMediaSeeking * iface, double dRate)
 641 {
 642     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 643     BOOL bChangeRate = (dRate != This->dRate);
 644     HRESULT hr = S_OK;
 645
 646     TRACE("(%e)\n", dRate);
 647
 648     if (dRate > 100 || dRate < .001)
 649     {
 650         FIXME("Excessive rate %e, ignoring\n", dRate);
 651         return VFW_E_UNSUPPORTED_AUDIO;
 652     }
 653
 654     EnterCriticalSection(This->crst);
 655     This->dRate = dRate;
 656     if (bChangeRate)
 657         hr = This->fnChangeRate(This->pUserData);
 658     ForwardCmdSeek(This->crst, This->pUserData, fwd_setrate, &dRate);
 659     LeaveCriticalSection(This->crst);
 660
 661     return hr;
 662 }
 663
 664 HRESULT WINAPI MediaSeekingImpl_GetRate(IMediaSeeking * iface, double * dRate)
 665 {
 666     MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
 667
 668     TRACE("(%p)\n", dRate);
 669
 670     EnterCriticalSection(This->crst);
 671     /* Forward? */
 672     *dRate = This->dRate;
 673     LeaveCriticalSection(This->crst);
 674
 675     return S_OK;
 676 }
 677
 678 HRESULT WINAPI MediaSeekingImpl_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll)
 679 {
 680     TRACE("(%p)\n", pPreroll);
 681
 682     *pPreroll = 0;
 683     return S_OK;
 684 }
 685
 686 static HRESULT WINAPI MediaSeekingPassThru_QueryInterface(IMediaSeeking *iface, REFIID riid, LPVOID *ppvObj)
 687 {
 688     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 689
 690     TRACE("(%p/%p)->(%s (%p), %p)\n", This, iface, debugstr_guid(riid), riid, ppvObj);
 691
 692     return SeekOuter_QueryInterface(This, riid, ppvObj);
 693 }
 694
 695 static ULONG WINAPI MediaSeekingPassThru_AddRef(IMediaSeeking *iface)
 696 {
 697     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 698
 699     TRACE("(%p/%p)->()\n", iface, This);
 700
 701     return SeekOuter_AddRef(This);
 702 }
 703
 704 static ULONG WINAPI MediaSeekingPassThru_Release(IMediaSeeking *iface)
 705 {
 706     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 707
 708     TRACE("(%p/%p)->()\n", iface, This);
 709
 710     return SeekOuter_Release(This);
 711 }
 712
 713 static HRESULT WINAPI MediaSeekingPassThru_GetCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
 714 {
 715     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 716
 717     TRACE("(%p/%p)->(%p)\n", iface, This, pCapabilities);
 718
 719     FIXME("stub\n");
 720     return E_NOTIMPL;
 721 }
 722
 723 static HRESULT WINAPI MediaSeekingPassThru_CheckCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
 724 {
 725     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 726
 727     TRACE("(%p/%p)->(%p)\n", iface, This, pCapabilities);
 728
 729     if (!pCapabilities)
 730         return E_POINTER;
 731
 732     FIXME("stub\n");
 733     return E_NOTIMPL;
 734 }
 735
 736 static HRESULT WINAPI MediaSeekingPassThru_IsFormatSupported(IMediaSeeking * iface, const GUID * pFormat)
 737 {
 738     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 739     TRACE("(%p/%p)->(%s)\n", iface, This, qzdebugstr_guid(pFormat));
 740
 741     FIXME("stub\n");
 742     return E_NOTIMPL;
 743 }
 744
 745 static HRESULT WINAPI MediaSeekingPassThru_QueryPreferredFormat(IMediaSeeking * iface, GUID * pFormat)
 746 {
 747     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 748     TRACE("(%p/%p)->(%p)\n", iface, This, pFormat);
 749
 750     FIXME("stub\n");
 751     return E_NOTIMPL;
 752 }
 753
 754 static HRESULT WINAPI MediaSeekingPassThru_GetTimeFormat(IMediaSeeking * iface, GUID * pFormat)
 755 {
 756     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 757     TRACE("(%p/%p)->(%p)\n", iface, This, pFormat);
 758
 759     FIXME("stub\n");
 760     return E_NOTIMPL;
 761 }
 762
 763 static HRESULT WINAPI MediaSeekingPassThru_IsUsingTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
 764 {
 765     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 766
 767     TRACE("(%p/%p)->(%s)\n", iface, This, qzdebugstr_guid(pFormat));
 768
 769     FIXME("stub\n");
 770     return E_NOTIMPL;
 771 }
 772
 773
 774 static HRESULT WINAPI MediaSeekingPassThru_SetTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
 775 {
 776     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 777     TRACE("(%p/%p)->(%s)\n", iface, This, qzdebugstr_guid(pFormat));
 778
 779     FIXME("stub\n");
 780     return E_NOTIMPL;
 781 }
 782
 783
 784 static HRESULT WINAPI MediaSeekingPassThru_GetDuration(IMediaSeeking * iface, LONGLONG * pDuration)
 785 {
 786     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 787     PIN_INFO info;
 788     HRESULT hr;
 789
 790     TRACE("(%p/%p)->(%p)\n", iface, This, pDuration);
 791
 792     IPin_QueryPinInfo(This->pin, &info);
 793
 794     hr = ForwardCmdSeek(NULL, info.pFilter, fwd_getduration, pDuration);
 795     IBaseFilter_Release(info.pFilter);
 796
 797     return hr;
 798 }
 799
 800 static HRESULT WINAPI MediaSeekingPassThru_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop)
 801 {
 802     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 803
 804     TRACE("(%p/%p)->(%p)\n", iface, This, pStop);
 805
 806     FIXME("stub\n");
 807     return E_NOTIMPL;
 808 }
 809
 810 /* FIXME: Make use of the info the filter should expose */
 811 static HRESULT WINAPI MediaSeekingPassThru_GetCurrentPosition(IMediaSeeking * iface, LONGLONG * pCurrent)
 812 {
 813     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 814
 815     TRACE("(%p/%p)->(%p)\n", iface, This, pCurrent);
 816
 817     FIXME("stub\n");
 818     return E_NOTIMPL;
 819 }
 820
 821 static HRESULT WINAPI MediaSeekingPassThru_ConvertTimeFormat(IMediaSeeking * iface, LONGLONG * pTarget, const GUID * pTargetFormat, LONGLONG Source, const GUID * pSourceFormat)
 822 {
 823     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 824
 825     TRACE("(%p/%p)->(%p,%s,%x%08x,%s)\n", iface, This, pTarget, debugstr_guid(pTargetFormat), (DWORD)(Source>>32), (DWORD)Source, debugstr_guid(pSourceFormat));
 826
 827     FIXME("stub\n");
 828     return E_NOTIMPL;
 829 }
 830
 831 static HRESULT WINAPI MediaSeekingPassThru_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags)
 832 {
 833     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 834     struct pos_args args;
 835     PIN_INFO info;
 836     HRESULT hr;
 837
 838     TRACE("(%p/%p)->(%p, %p)\n", iface, This, pCurrent, pStop);
 839     args.current = pCurrent;
 840     args.stop = pStop;
 841     args.curflags = dwCurrentFlags;
 842     args.stopflags = dwStopFlags;
 843
 844     IPin_QueryPinInfo(This->pin, &info);
 845
 846     hr = ForwardCmdSeek(NULL, info.pFilter, fwd_setposition, &args);
 847     IBaseFilter_Release(info.pFilter);
 848     return hr;
 849 }
 850
 851 static HRESULT WINAPI MediaSeekingPassThru_GetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, LONGLONG * pStop)
 852 {
 853     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 854
 855     TRACE("(%p/%p)->(%p, %p)\n", iface, This, pCurrent, pStop);
 856
 857     FIXME("stub\n");
 858     return E_NOTIMPL;
 859 }
 860
 861 static HRESULT WINAPI MediaSeekingPassThru_GetAvailable(IMediaSeeking * iface, LONGLONG * pEarliest, LONGLONG * pLatest)
 862 {
 863     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 864
 865     TRACE("(%p/%p)->(%p,%p)\n", iface, This, pEarliest, pLatest);
 866
 867     FIXME("stub\n");
 868     return E_NOTIMPL;
 869 }
 870
 871 static HRESULT WINAPI MediaSeekingPassThru_SetRate(IMediaSeeking * iface, double dRate)
 872 {
 873     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 874
 875     TRACE("(%p/%p)->(%e)\n", iface, This, dRate);
 876
 877     FIXME("stub\n");
 878     return E_NOTIMPL;
 879 }
 880
 881 static HRESULT WINAPI MediaSeekingPassThru_GetRate(IMediaSeeking * iface, double * dRate)
 882 {
 883     ICOM_THIS_MULTI(PassThruImpl, IMediaSeeking_vtbl, iface);
 884
 885     TRACE("(%p/%p)->(%p)\n", iface, This, dRate);
 886
 887     FIXME("stub\n");
 888     return E_NOTIMPL;
 889 }
 890
 891 static HRESULT WINAPI MediaSeekingPassThru_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll)
 892 {
 893     TRACE("(%p)\n", pPreroll);
 894
 895     FIXME("stub\n");
 896     return E_NOTIMPL;
 897 }
 898
 899 static const IMediaSeekingVtbl IMediaSeekingPassThru_Vtbl =
 900 {
 901     MediaSeekingPassThru_QueryInterface,
 902     MediaSeekingPassThru_AddRef,
 903     MediaSeekingPassThru_Release,
 904     MediaSeekingPassThru_GetCapabilities,
 905     MediaSeekingPassThru_CheckCapabilities,
 906     MediaSeekingPassThru_IsFormatSupported,
 907     MediaSeekingPassThru_QueryPreferredFormat,
 908     MediaSeekingPassThru_GetTimeFormat,
 909     MediaSeekingPassThru_IsUsingTimeFormat,
 910     MediaSeekingPassThru_SetTimeFormat,
 911     MediaSeekingPassThru_GetDuration,
 912     MediaSeekingPassThru_GetStopPosition,
 913     MediaSeekingPassThru_GetCurrentPosition,
 914     MediaSeekingPassThru_ConvertTimeFormat,
 915     MediaSeekingPassThru_SetPositions,
 916     MediaSeekingPassThru_GetPositions,
 917     MediaSeekingPassThru_GetAvailable,
 918     MediaSeekingPassThru_SetRate,
 919     MediaSeekingPassThru_GetRate,
 920     MediaSeekingPassThru_GetPreroll
 921 };