dlls/qcap/vfwcapture.c

   1 /* Video For Windows Steering structure
   2  *
   3  * Copyright 2005 Maarten Lankhorst
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  *
  19  */
  20
  21 #include "qcap_private.h"
  22
  23 WINE_DEFAULT_DEBUG_CHANNEL(qcap);
  24
  25 static const struct video_capture_funcs *capture_funcs;
  26
  27 struct vfw_capture
  28 {
  29     struct strmbase_filter filter;
  30     IAMStreamConfig IAMStreamConfig_iface;
  31     IAMVideoControl IAMVideoControl_iface;
  32     IAMVideoProcAmp IAMVideoProcAmp_iface;
  33     IAMFilterMiscFlags IAMFilterMiscFlags_iface;
  34     IPersistPropertyBag IPersistPropertyBag_iface;
  35     BOOL init;
  36
  37     struct strmbase_source source;
  38     IKsPropertySet IKsPropertySet_iface;
  39
  40     struct video_capture_device *device;
  41
  42     /* FIXME: It would be nice to avoid duplicating this variable with strmbase.
  43      * However, synchronization is tricky; we need access to be protected by a
  44      * separate lock. */
  45     FILTER_STATE state;
  46     CONDITION_VARIABLE state_cv;
  47     CRITICAL_SECTION state_cs;
  48
  49     HANDLE thread;
  50 };
  51
  52 static inline struct vfw_capture *impl_from_strmbase_filter(struct strmbase_filter *iface)
  53 {
  54     return CONTAINING_RECORD(iface, struct vfw_capture, filter);
  55 }
  56
  57 static inline struct vfw_capture *impl_from_IAMStreamConfig(IAMStreamConfig *iface)
  58 {
  59     return CONTAINING_RECORD(iface, struct vfw_capture, IAMStreamConfig_iface);
  60 }
  61
  62 static inline struct vfw_capture *impl_from_IAMVideoControl(IAMVideoControl *iface)
  63 {
  64     return CONTAINING_RECORD(iface, struct vfw_capture, IAMVideoControl_iface);
  65 }
  66
  67 static inline struct vfw_capture *impl_from_IAMVideoProcAmp(IAMVideoProcAmp *iface)
  68 {
  69     return CONTAINING_RECORD(iface, struct vfw_capture, IAMVideoProcAmp_iface);
  70 }
  71
  72 static inline struct vfw_capture *impl_from_IAMFilterMiscFlags(IAMFilterMiscFlags *iface)
  73 {
  74     return CONTAINING_RECORD(iface, struct vfw_capture, IAMFilterMiscFlags_iface);
  75 }
  76
  77 static inline struct vfw_capture *impl_from_IPersistPropertyBag(IPersistPropertyBag *iface)
  78 {
  79     return CONTAINING_RECORD(iface, struct vfw_capture, IPersistPropertyBag_iface);
  80 }
  81
  82 static struct strmbase_pin *vfw_capture_get_pin(struct strmbase_filter *iface, unsigned int index)
  83 {
  84     struct vfw_capture *filter = impl_from_strmbase_filter(iface);
  85
  86     if (index >= 1)
  87         return NULL;
  88
  89     return &filter->source.pin;
  90 }
  91
  92 static void vfw_capture_destroy(struct strmbase_filter *iface)
  93 {
  94     struct vfw_capture *filter = impl_from_strmbase_filter(iface);
  95
  96     if (filter->init)
  97     {
  98         if (filter->filter.state != State_Stopped)
  99             capture_funcs->cleanup_stream(filter->device);
 100         capture_funcs->destroy(filter->device);
 101     }
 102
 103     if (filter->source.pin.peer)
 104     {
 105         IPin_Disconnect(filter->source.pin.peer);
 106         IPin_Disconnect(&filter->source.pin.IPin_iface);
 107     }
 108     filter->state_cs.DebugInfo->Spare[0] = 0;
 109     DeleteCriticalSection(&filter->state_cs);
 110     strmbase_source_cleanup(&filter->source);
 111     strmbase_filter_cleanup(&filter->filter);
 112     CoTaskMemFree(filter);
 113     ObjectRefCount(FALSE);
 114 }
 115
 116 static HRESULT vfw_capture_query_interface(struct strmbase_filter *iface, REFIID iid, void **out)
 117 {
 118     struct vfw_capture *filter = impl_from_strmbase_filter(iface);
 119
 120     if (IsEqualGUID(iid, &IID_IPersistPropertyBag))
 121         *out = &filter->IPersistPropertyBag_iface;
 122     else if (IsEqualGUID(iid, &IID_IAMVideoControl))
 123         *out = &filter->IAMVideoControl_iface;
 124     else if (IsEqualGUID(iid, &IID_IAMVideoProcAmp))
 125         *out = &filter->IAMVideoProcAmp_iface;
 126     else if (IsEqualGUID(iid, &IID_IAMFilterMiscFlags))
 127         *out = &filter->IAMFilterMiscFlags_iface;
 128     else
 129         return E_NOINTERFACE;
 130
 131     IUnknown_AddRef((IUnknown *)*out);
 132     return S_OK;
 133 }
 134
 135 static DWORD WINAPI stream_thread(void *arg)
 136 {
 137     struct vfw_capture *filter = arg;
 138     const VIDEOINFOHEADER *format = (const VIDEOINFOHEADER *)filter->source.pin.mt.pbFormat;
 139     const unsigned int image_size = format->bmiHeader.biWidth
 140             * format->bmiHeader.biHeight * format->bmiHeader.biBitCount / 8;
 141
 142     for (;;)
 143     {
 144         IMediaSample *sample;
 145         HRESULT hr;
 146         BYTE *data;
 147
 148         EnterCriticalSection(&filter->state_cs);
 149
 150         while (filter->state == State_Paused)
 151             SleepConditionVariableCS(&filter->state_cv, &filter->state_cs, INFINITE);
 152
 153         if (filter->state == State_Stopped)
 154         {
 155             LeaveCriticalSection(&filter->state_cs);
 156             break;
 157         }
 158
 159         LeaveCriticalSection(&filter->state_cs);
 160
 161         if (FAILED(hr = BaseOutputPinImpl_GetDeliveryBuffer(&filter->source, &sample, NULL, NULL, 0)))
 162         {
 163             ERR("Failed to get sample, hr %#x.\n", hr);
 164             break;
 165         }
 166
 167         IMediaSample_SetActualDataLength(sample, image_size);
 168         IMediaSample_GetPointer(sample, &data);
 169
 170         if (!capture_funcs->read_frame(filter->device, data))
 171         {
 172             IMediaSample_Release(sample);
 173             break;
 174         }
 175
 176         hr = IMemInputPin_Receive(filter->source.pMemInputPin, sample);
 177         IMediaSample_Release(sample);
 178         if (FAILED(hr))
 179         {
 180             ERR("IMemInputPin::Receive() returned %#x.\n", hr);
 181             break;
 182         }
 183     }
 184
 185     return 0;
 186 }
 187
 188 static HRESULT vfw_capture_init_stream(struct strmbase_filter *iface)
 189 {
 190     struct vfw_capture *filter = impl_from_strmbase_filter(iface);
 191
 192     capture_funcs->init_stream(filter->device);
 193
 194     EnterCriticalSection(&filter->state_cs);
 195     filter->state = State_Paused;
 196     LeaveCriticalSection(&filter->state_cs);
 197
 198     filter->thread = CreateThread(NULL, 0, stream_thread, filter, 0, NULL);
 199
 200     return S_OK;
 201 }
 202
 203 static HRESULT vfw_capture_start_stream(struct strmbase_filter *iface, REFERENCE_TIME time)
 204 {
 205     struct vfw_capture *filter = impl_from_strmbase_filter(iface);
 206
 207     EnterCriticalSection(&filter->state_cs);
 208     filter->state = State_Running;
 209     LeaveCriticalSection(&filter->state_cs);
 210     WakeConditionVariable(&filter->state_cv);
 211     return S_OK;
 212 }
 213
 214 static HRESULT vfw_capture_stop_stream(struct strmbase_filter *iface)
 215 {
 216     struct vfw_capture *filter = impl_from_strmbase_filter(iface);
 217
 218     EnterCriticalSection(&filter->state_cs);
 219     filter->state = State_Paused;
 220     LeaveCriticalSection(&filter->state_cs);
 221     return S_OK;
 222 }
 223
 224 static HRESULT vfw_capture_cleanup_stream(struct strmbase_filter *iface)
 225 {
 226     struct vfw_capture *filter = impl_from_strmbase_filter(iface);
 227
 228     EnterCriticalSection(&filter->state_cs);
 229     filter->state = State_Stopped;
 230     LeaveCriticalSection(&filter->state_cs);
 231     WakeConditionVariable(&filter->state_cv);
 232
 233     WaitForSingleObject(filter->thread, INFINITE);
 234     CloseHandle(filter->thread);
 235     filter->thread = NULL;
 236
 237     capture_funcs->cleanup_stream(filter->device);
 238     return S_OK;
 239 }
 240
 241 static HRESULT vfw_capture_wait_state(struct strmbase_filter *iface, DWORD timeout)
 242 {
 243     return iface->state == State_Paused ? VFW_S_CANT_CUE : S_OK;
 244 }
 245
 246 static const struct strmbase_filter_ops filter_ops =
 247 {
 248     .filter_get_pin = vfw_capture_get_pin,
 249     .filter_destroy = vfw_capture_destroy,
 250     .filter_query_interface = vfw_capture_query_interface,
 251     .filter_init_stream = vfw_capture_init_stream,
 252     .filter_start_stream = vfw_capture_start_stream,
 253     .filter_stop_stream = vfw_capture_stop_stream,
 254     .filter_cleanup_stream = vfw_capture_cleanup_stream,
 255     .filter_wait_state = vfw_capture_wait_state,
 256 };
 257
 258 static HRESULT WINAPI AMStreamConfig_QueryInterface(IAMStreamConfig *iface, REFIID iid, void **out)
 259 {
 260     struct vfw_capture *filter = impl_from_IAMStreamConfig(iface);
 261     return IPin_QueryInterface(&filter->source.pin.IPin_iface, iid, out);
 262 }
 263
 264 static ULONG WINAPI AMStreamConfig_AddRef(IAMStreamConfig *iface)
 265 {
 266     struct vfw_capture *filter = impl_from_IAMStreamConfig(iface);
 267     return IPin_AddRef(&filter->source.pin.IPin_iface);
 268 }
 269
 270 static ULONG WINAPI AMStreamConfig_Release(IAMStreamConfig *iface)
 271 {
 272     struct vfw_capture *filter = impl_from_IAMStreamConfig(iface);
 273     return IPin_Release(&filter->source.pin.IPin_iface);
 274 }
 275
 276 static HRESULT WINAPI
 277 AMStreamConfig_SetFormat(IAMStreamConfig *iface, AM_MEDIA_TYPE *pmt)
 278 {
 279     struct vfw_capture *This = impl_from_IAMStreamConfig(iface);
 280     HRESULT hr;
 281
 282     TRACE("filter %p, mt %p.\n", This, pmt);
 283     strmbase_dump_media_type(pmt);
 284
 285     if (This->filter.state != State_Stopped)
 286     {
 287         TRACE("Returning not stopped error\n");
 288         return VFW_E_NOT_STOPPED;
 289     }
 290
 291     if (!pmt)
 292     {
 293         TRACE("pmt is NULL\n");
 294         return E_POINTER;
 295     }
 296
 297     if (!IsEqualGUID(&pmt->majortype, &MEDIATYPE_Video))
 298         return E_FAIL;
 299
 300     if (This->source.pin.peer)
 301     {
 302         hr = IPin_QueryAccept(This->source.pin.peer, pmt);
 303         TRACE("Would accept: %d\n", hr);
 304         if (hr == S_FALSE)
 305             return VFW_E_INVALIDMEDIATYPE;
 306     }
 307
 308     hr = capture_funcs->set_format(This->device, pmt);
 309     if (SUCCEEDED(hr) && This->filter.graph && This->source.pin.peer)
 310     {
 311         hr = IFilterGraph_Reconnect(This->filter.graph, &This->source.pin.IPin_iface);
 312         if (SUCCEEDED(hr))
 313             TRACE("Reconnection completed, with new media format..\n");
 314     }
 315     TRACE("Returning: %d\n", hr);
 316     return hr;
 317 }
 318
 319 static HRESULT WINAPI AMStreamConfig_GetFormat(IAMStreamConfig *iface, AM_MEDIA_TYPE **mt)
 320 {
 321     struct vfw_capture *filter = impl_from_IAMStreamConfig(iface);
 322     HRESULT hr;
 323
 324     TRACE("filter %p, mt %p.\n", filter, mt);
 325
 326     if (!(*mt = CoTaskMemAlloc(sizeof(**mt))))
 327         return E_OUTOFMEMORY;
 328
 329     if (SUCCEEDED(hr = capture_funcs->get_format(filter->device, *mt)))
 330         strmbase_dump_media_type(*mt);
 331     return hr;
 332 }
 333
 334 static HRESULT WINAPI AMStreamConfig_GetNumberOfCapabilities(IAMStreamConfig *iface,
 335         int *count, int *size)
 336 {
 337     struct vfw_capture *filter = impl_from_IAMStreamConfig(iface);
 338
 339     TRACE("filter %p, count %p, size %p.\n", filter, count, size);
 340
 341     if (!count || !size)
 342         return E_POINTER;
 343
 344     *count = capture_funcs->get_caps_count(filter->device);
 345     *size = sizeof(VIDEO_STREAM_CONFIG_CAPS);
 346
 347     return S_OK;
 348 }
 349
 350 static HRESULT WINAPI AMStreamConfig_GetStreamCaps(IAMStreamConfig *iface,
 351         int index, AM_MEDIA_TYPE **pmt, BYTE *vscc)
 352 {
 353     struct vfw_capture *filter = impl_from_IAMStreamConfig(iface);
 354
 355     TRACE("filter %p, index %d, pmt %p, vscc %p.\n", filter, index, pmt, vscc);
 356
 357     return capture_funcs->get_caps(filter->device, index, pmt, (VIDEO_STREAM_CONFIG_CAPS *)vscc);
 358 }
 359
 360 static const IAMStreamConfigVtbl IAMStreamConfig_VTable =
 361 {
 362     AMStreamConfig_QueryInterface,
 363     AMStreamConfig_AddRef,
 364     AMStreamConfig_Release,
 365     AMStreamConfig_SetFormat,
 366     AMStreamConfig_GetFormat,
 367     AMStreamConfig_GetNumberOfCapabilities,
 368     AMStreamConfig_GetStreamCaps
 369 };
 370
 371 static HRESULT WINAPI AMVideoProcAmp_QueryInterface(IAMVideoProcAmp *iface, REFIID iid, void **out)
 372 {
 373     struct vfw_capture *filter = impl_from_IAMVideoProcAmp(iface);
 374     return IUnknown_QueryInterface(filter->filter.outer_unk, iid, out);
 375 }
 376
 377 static ULONG WINAPI AMVideoProcAmp_AddRef(IAMVideoProcAmp * iface)
 378 {
 379     struct vfw_capture *filter = impl_from_IAMVideoProcAmp(iface);
 380     return IUnknown_AddRef(filter->filter.outer_unk);
 381 }
 382
 383 static ULONG WINAPI AMVideoProcAmp_Release(IAMVideoProcAmp * iface)
 384 {
 385     struct vfw_capture *filter = impl_from_IAMVideoProcAmp(iface);
 386     return IUnknown_Release(filter->filter.outer_unk);
 387 }
 388
 389 static HRESULT WINAPI AMVideoProcAmp_GetRange(IAMVideoProcAmp *iface, LONG property,
 390         LONG *min, LONG *max, LONG *step, LONG *default_value, LONG *flags)
 391 {
 392     struct vfw_capture *filter = impl_from_IAMVideoProcAmp(iface);
 393
 394     TRACE("filter %p, property %#x, min %p, max %p, step %p, default_value %p, flags %p.\n",
 395             filter, property, min, max, step, default_value, flags);
 396
 397     return capture_funcs->get_prop_range(filter->device, property, min,
 398             max, step, default_value, flags);
 399 }
 400
 401 static HRESULT WINAPI AMVideoProcAmp_Set(IAMVideoProcAmp *iface, LONG property,
 402         LONG value, LONG flags)
 403 {
 404     struct vfw_capture *filter = impl_from_IAMVideoProcAmp(iface);
 405
 406     TRACE("filter %p, property %#x, value %d, flags %#x.\n", filter, property, value, flags);
 407
 408     return capture_funcs->set_prop(filter->device, property, value, flags);
 409 }
 410
 411 static HRESULT WINAPI AMVideoProcAmp_Get(IAMVideoProcAmp *iface, LONG property,
 412         LONG *value, LONG *flags)
 413 {
 414     struct vfw_capture *filter = impl_from_IAMVideoProcAmp(iface);
 415
 416     TRACE("filter %p, property %#x, value %p, flags %p.\n", filter, property, value, flags);
 417
 418     return capture_funcs->get_prop(filter->device, property, value, flags);
 419 }
 420
 421 static const IAMVideoProcAmpVtbl IAMVideoProcAmp_VTable =
 422 {
 423     AMVideoProcAmp_QueryInterface,
 424     AMVideoProcAmp_AddRef,
 425     AMVideoProcAmp_Release,
 426     AMVideoProcAmp_GetRange,
 427     AMVideoProcAmp_Set,
 428     AMVideoProcAmp_Get,
 429 };
 430
 431 static HRESULT WINAPI PPB_QueryInterface(IPersistPropertyBag *iface, REFIID iid, void **out)
 432 {
 433     struct vfw_capture *filter = impl_from_IPersistPropertyBag(iface);
 434     return IUnknown_QueryInterface(filter->filter.outer_unk, iid, out);
 435 }
 436
 437 static ULONG WINAPI PPB_AddRef(IPersistPropertyBag * iface)
 438 {
 439     struct vfw_capture *filter = impl_from_IPersistPropertyBag(iface);
 440     return IUnknown_AddRef(filter->filter.outer_unk);
 441 }
 442
 443 static ULONG WINAPI PPB_Release(IPersistPropertyBag * iface)
 444 {
 445     struct vfw_capture *filter = impl_from_IPersistPropertyBag(iface);
 446     return IUnknown_Release(filter->filter.outer_unk);
 447 }
 448
 449 static HRESULT WINAPI
 450 PPB_GetClassID( IPersistPropertyBag * iface, CLSID * pClassID )
 451 {
 452     struct vfw_capture *This = impl_from_IPersistPropertyBag(iface);
 453
 454     FIXME("%p - stub\n", This);
 455
 456     return E_NOTIMPL;
 457 }
 458
 459 static HRESULT WINAPI PPB_InitNew(IPersistPropertyBag * iface)
 460 {
 461     struct vfw_capture *This = impl_from_IPersistPropertyBag(iface);
 462
 463     FIXME("%p - stub\n", This);
 464
 465     return E_NOTIMPL;
 466 }
 467
 468 static HRESULT WINAPI PPB_Load(IPersistPropertyBag *iface, IPropertyBag *bag, IErrorLog *error_log)
 469 {
 470     static const OLECHAR VFWIndex[] = {'V','F','W','I','n','d','e','x',0};
 471     struct vfw_capture *filter = impl_from_IPersistPropertyBag(iface);
 472     HRESULT hr;
 473     VARIANT var;
 474
 475     TRACE("filter %p, bag %p, error_log %p.\n", filter, bag, error_log);
 476
 477     V_VT(&var) = VT_I4;
 478     if (FAILED(hr = IPropertyBag_Read(bag, VFWIndex, &var, error_log)))
 479         return hr;
 480
 481     if (!(filter->device = capture_funcs->create(&filter->source, V_I4(&var))))
 482         return E_FAIL;
 483
 484     filter->init = TRUE;
 485     return S_OK;
 486 }
 487
 488 static HRESULT WINAPI
 489 PPB_Save( IPersistPropertyBag * iface, IPropertyBag *pPropBag,
 490           BOOL fClearDirty, BOOL fSaveAllProperties )
 491 {
 492     struct vfw_capture *This = impl_from_IPersistPropertyBag(iface);
 493     FIXME("%p - stub\n", This);
 494     return E_NOTIMPL;
 495 }
 496
 497 static const IPersistPropertyBagVtbl IPersistPropertyBag_VTable =
 498 {
 499     PPB_QueryInterface,
 500     PPB_AddRef,
 501     PPB_Release,
 502     PPB_GetClassID,
 503     PPB_InitNew,
 504     PPB_Load,
 505     PPB_Save
 506 };
 507
 508 /* IKsPropertySet interface */
 509 static inline struct vfw_capture *impl_from_IKsPropertySet(IKsPropertySet *iface)
 510 {
 511     return CONTAINING_RECORD(iface, struct vfw_capture, IKsPropertySet_iface);
 512 }
 513
 514 static HRESULT WINAPI KSP_QueryInterface(IKsPropertySet *iface, REFIID iid, void **out)
 515 {
 516     struct vfw_capture *filter = impl_from_IKsPropertySet(iface);
 517     return IPin_QueryInterface(&filter->source.pin.IPin_iface, iid, out);
 518 }
 519
 520 static ULONG WINAPI KSP_AddRef(IKsPropertySet * iface)
 521 {
 522     struct vfw_capture *filter = impl_from_IKsPropertySet(iface);
 523     return IPin_AddRef(&filter->source.pin.IPin_iface);
 524 }
 525
 526 static ULONG WINAPI KSP_Release(IKsPropertySet * iface)
 527 {
 528     struct vfw_capture *filter = impl_from_IKsPropertySet(iface);
 529     return IPin_Release(&filter->source.pin.IPin_iface);
 530 }
 531
 532 static HRESULT WINAPI
 533 KSP_Set( IKsPropertySet * iface, REFGUID guidPropSet, DWORD dwPropID,
 534          LPVOID pInstanceData, DWORD cbInstanceData, LPVOID pPropData,
 535          DWORD cbPropData )
 536 {
 537     FIXME("%p: stub\n", iface);
 538     return E_NOTIMPL;
 539 }
 540
 541 static HRESULT WINAPI
 542 KSP_Get( IKsPropertySet * iface, REFGUID guidPropSet, DWORD dwPropID,
 543          LPVOID pInstanceData, DWORD cbInstanceData, LPVOID pPropData,
 544          DWORD cbPropData, DWORD *pcbReturned )
 545 {
 546     LPGUID pGuid;
 547
 548     TRACE("()\n");
 549
 550     if (!IsEqualIID(guidPropSet, &AMPROPSETID_Pin))
 551         return E_PROP_SET_UNSUPPORTED;
 552     if (pPropData == NULL && pcbReturned == NULL)
 553         return E_POINTER;
 554     if (pcbReturned)
 555         *pcbReturned = sizeof(GUID);
 556     if (pPropData == NULL)
 557         return S_OK;
 558     if (cbPropData < sizeof(GUID))
 559         return E_UNEXPECTED;
 560     pGuid = pPropData;
 561     *pGuid = PIN_CATEGORY_CAPTURE;
 562     FIXME("() Not adding a pin with PIN_CATEGORY_PREVIEW\n");
 563     return S_OK;
 564 }
 565
 566 static HRESULT WINAPI
 567 KSP_QuerySupported( IKsPropertySet * iface, REFGUID guidPropSet,
 568                     DWORD dwPropID, DWORD *pTypeSupport )
 569 {
 570    FIXME("%p: stub\n", iface);
 571    return E_NOTIMPL;
 572 }
 573
 574 static const IKsPropertySetVtbl IKsPropertySet_VTable =
 575 {
 576    KSP_QueryInterface,
 577    KSP_AddRef,
 578    KSP_Release,
 579    KSP_Set,
 580    KSP_Get,
 581    KSP_QuerySupported
 582 };
 583
 584 static inline struct vfw_capture *impl_from_strmbase_pin(struct strmbase_pin *pin)
 585 {
 586     return CONTAINING_RECORD(pin, struct vfw_capture, source.pin);
 587 }
 588
 589 static HRESULT source_query_accept(struct strmbase_pin *pin, const AM_MEDIA_TYPE *mt)
 590 {
 591     struct vfw_capture *filter = impl_from_strmbase_pin(pin);
 592     return capture_funcs->check_format(filter->device, mt);
 593 }
 594
 595 static HRESULT source_get_media_type(struct strmbase_pin *pin,
 596         unsigned int index, AM_MEDIA_TYPE *mt)
 597 {
 598     struct vfw_capture *filter = impl_from_strmbase_pin(pin);
 599     return capture_funcs->get_media_type(filter->device, index, mt);
 600 }
 601
 602 static HRESULT source_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
 603 {
 604     struct vfw_capture *filter = impl_from_strmbase_pin(iface);
 605
 606     if (IsEqualGUID(iid, &IID_IKsPropertySet))
 607         *out = &filter->IKsPropertySet_iface;
 608     else if (IsEqualGUID(iid, &IID_IAMStreamConfig))
 609         *out = &filter->IAMStreamConfig_iface;
 610     else
 611         return E_NOINTERFACE;
 612
 613     IUnknown_AddRef((IUnknown *)*out);
 614     return S_OK;
 615 }
 616
 617 static HRESULT WINAPI VfwPin_DecideBufferSize(struct strmbase_source *iface,
 618         IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest)
 619 {
 620     ALLOCATOR_PROPERTIES actual;
 621
 622     /* What we put here doesn't matter, the
 623        driver function should override it then commit */
 624     if (!ppropInputRequest->cBuffers)
 625         ppropInputRequest->cBuffers = 3;
 626     if (!ppropInputRequest->cbBuffer)
 627         ppropInputRequest->cbBuffer = 230400;
 628     if (!ppropInputRequest->cbAlign)
 629         ppropInputRequest->cbAlign = 1;
 630
 631     return IMemAllocator_SetProperties(pAlloc, ppropInputRequest, &actual);
 632 }
 633
 634 static const struct strmbase_source_ops source_ops =
 635 {
 636     .base.pin_query_accept = source_query_accept,
 637     .base.pin_get_media_type = source_get_media_type,
 638     .base.pin_query_interface = source_query_interface,
 639     .pfnAttemptConnection = BaseOutputPinImpl_AttemptConnection,
 640     .pfnDecideBufferSize = VfwPin_DecideBufferSize,
 641     .pfnDecideAllocator = BaseOutputPinImpl_DecideAllocator,
 642 };
 643
 644 static HRESULT WINAPI misc_flags_QueryInterface(IAMFilterMiscFlags *iface, REFIID riid, void **ppv)
 645 {
 646     struct vfw_capture *filter = impl_from_IAMFilterMiscFlags(iface);
 647     return IUnknown_QueryInterface(filter->filter.outer_unk, riid, ppv);
 648 }
 649
 650 static ULONG WINAPI misc_flags_AddRef(IAMFilterMiscFlags *iface)
 651 {
 652     struct vfw_capture *filter = impl_from_IAMFilterMiscFlags(iface);
 653     return IUnknown_AddRef(filter->filter.outer_unk);
 654 }
 655
 656 static ULONG WINAPI misc_flags_Release(IAMFilterMiscFlags *iface)
 657 {
 658     struct vfw_capture *filter = impl_from_IAMFilterMiscFlags(iface);
 659     return IUnknown_Release(filter->filter.outer_unk);
 660 }
 661
 662 static ULONG WINAPI misc_flags_GetMiscFlags(IAMFilterMiscFlags *iface)
 663 {
 664     return AM_FILTER_MISC_FLAGS_IS_SOURCE;
 665 }
 666
 667 static const IAMFilterMiscFlagsVtbl IAMFilterMiscFlags_VTable =
 668 {
 669     misc_flags_QueryInterface,
 670     misc_flags_AddRef,
 671     misc_flags_Release,
 672     misc_flags_GetMiscFlags
 673 };
 674
 675 static HRESULT WINAPI video_control_QueryInterface(IAMVideoControl *iface, REFIID riid, void **ppv)
 676 {
 677     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 678     return IUnknown_QueryInterface(filter->filter.outer_unk, riid, ppv);
 679 }
 680
 681 static ULONG WINAPI video_control_AddRef(IAMVideoControl *iface)
 682 {
 683     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 684     return IUnknown_AddRef(filter->filter.outer_unk);
 685 }
 686
 687 static ULONG WINAPI video_control_Release(IAMVideoControl *iface)
 688 {
 689     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 690     return IUnknown_Release(filter->filter.outer_unk);
 691 }
 692
 693 static HRESULT WINAPI video_control_GetCaps(IAMVideoControl *iface, IPin *pin, LONG *flags)
 694 {
 695     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 696
 697     FIXME("filter %p, pin %p, flags %p: stub.\n", filter, pin, flags);
 698
 699     return E_NOTIMPL;
 700 }
 701
 702 static HRESULT WINAPI video_control_SetMode(IAMVideoControl *iface, IPin *pin, LONG mode)
 703 {
 704     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 705
 706     FIXME("filter %p, pin %p, mode %d: stub.\n", filter, pin, mode);
 707
 708     return E_NOTIMPL;
 709 }
 710
 711 static HRESULT WINAPI video_control_GetMode(IAMVideoControl *iface, IPin *pin, LONG *mode)
 712 {
 713     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 714
 715     FIXME("filter %p, pin %p, mode %p: stub.\n", filter, pin, mode);
 716
 717     return E_NOTIMPL;
 718 }
 719
 720 static HRESULT WINAPI video_control_GetCurrentActualFrameRate(IAMVideoControl *iface, IPin *pin,
 721         LONGLONG *frame_rate)
 722 {
 723     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 724
 725     FIXME("filter %p, pin %p, frame rate %p: stub.\n", filter, pin, frame_rate);
 726
 727     return E_NOTIMPL;
 728 }
 729
 730 static HRESULT WINAPI video_control_GetMaxAvailableFrameRate(IAMVideoControl *iface, IPin *pin,
 731         LONG index, SIZE dimensions, LONGLONG *frame_rate)
 732 {
 733     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 734
 735     FIXME("filter %p, pin %p, index %d, dimensions (%dx%d), frame rate %p: stub.\n",
 736             filter, pin, index, dimensions.cx, dimensions.cy, frame_rate);
 737
 738     return E_NOTIMPL;
 739 }
 740
 741 static HRESULT WINAPI video_control_GetFrameRateList(IAMVideoControl *iface, IPin *pin, LONG index,
 742         SIZE dimensions, LONG *list_size, LONGLONG **frame_rate)
 743 {
 744     struct vfw_capture *filter = impl_from_IAMVideoControl(iface);
 745
 746     FIXME("filter %p, pin %p, index %d, dimensions (%dx%d), list size %p, frame rate: %p: stub.\n",
 747             filter, pin, index, dimensions.cx, dimensions.cy, list_size, frame_rate);
 748
 749     return E_NOTIMPL;
 750 }
 751
 752 static const IAMVideoControlVtbl IAMVideoControl_VTable =
 753 {
 754     video_control_QueryInterface,
 755     video_control_AddRef,
 756     video_control_Release,
 757     video_control_GetCaps,
 758     video_control_SetMode,
 759     video_control_GetMode,
 760     video_control_GetCurrentActualFrameRate,
 761     video_control_GetMaxAvailableFrameRate,
 762     video_control_GetFrameRateList
 763 };
 764
 765 static BOOL WINAPI load_capture_funcs(INIT_ONCE *once, void *param, void **context)
 766 {
 767     capture_funcs = &v4l_funcs;
 768     return TRUE;
 769 }
 770
 771 static INIT_ONCE init_once = INIT_ONCE_STATIC_INIT;
 772
 773 HRESULT vfw_capture_create(IUnknown *outer, IUnknown **out)
 774 {
 775     static const WCHAR source_name[] = {'O','u','t','p','u','t',0};
 776     struct vfw_capture *object;
 777
 778     if (!InitOnceExecuteOnce(&init_once, load_capture_funcs, NULL, NULL))
 779         return E_FAIL;
 780
 781     if (!(object = CoTaskMemAlloc(sizeof(*object))))
 782         return E_OUTOFMEMORY;
 783
 784     strmbase_filter_init(&object->filter, outer, &CLSID_VfwCapture, &filter_ops);
 785
 786     object->IAMStreamConfig_iface.lpVtbl = &IAMStreamConfig_VTable;
 787     object->IAMVideoControl_iface.lpVtbl = &IAMVideoControl_VTable;
 788     object->IAMVideoProcAmp_iface.lpVtbl = &IAMVideoProcAmp_VTable;
 789     object->IAMFilterMiscFlags_iface.lpVtbl = &IAMFilterMiscFlags_VTable;
 790     object->IPersistPropertyBag_iface.lpVtbl = &IPersistPropertyBag_VTable;
 791     object->init = FALSE;
 792
 793     strmbase_source_init(&object->source, &object->filter, source_name, &source_ops);
 794
 795     object->IKsPropertySet_iface.lpVtbl = &IKsPropertySet_VTable;
 796
 797     object->state = State_Stopped;
 798     InitializeConditionVariable(&object->state_cv);
 799     InitializeCriticalSection(&object->state_cs);
 800     object->state_cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": vfw_capture.state_cs");
 801
 802     TRACE("Created VFW capture filter %p.\n", object);
 803     ObjectRefCount(TRUE);
 804     *out = &object->filter.IUnknown_inner;
 805     return S_OK;
 806 }