/* * Header file for Wine's strmbase implementation * * Copyright 2003 Robert Shearman * Copyright 2010 Aric Stewart, CodeWeavers * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ HRESULT WINAPI CopyMediaType(AM_MEDIA_TYPE * pDest, const AM_MEDIA_TYPE *pSrc); void WINAPI FreeMediaType(AM_MEDIA_TYPE * pMediaType); AM_MEDIA_TYPE * WINAPI CreateMediaType(AM_MEDIA_TYPE const * pSrc); void WINAPI DeleteMediaType(AM_MEDIA_TYPE * pMediaType); /* Pin functions */ typedef struct BasePin { IPin IPin_iface; LONG refCount; LPCRITICAL_SECTION pCritSec; PIN_INFO pinInfo; IPin * pConnectedTo; AM_MEDIA_TYPE mtCurrent; REFERENCE_TIME tStart; REFERENCE_TIME tStop; double dRate; const struct BasePinFuncTable* pFuncsTable; } BasePin; typedef HRESULT (WINAPI *BasePin_CheckMediaType)(BasePin *This, const AM_MEDIA_TYPE *pmt); typedef HRESULT (WINAPI *BasePin_AttemptConnection)(BasePin *This, IPin *pReceivePin, const AM_MEDIA_TYPE *pmt); typedef LONG (WINAPI *BasePin_GetMediaTypeVersion)(BasePin *This); typedef HRESULT (WINAPI *BasePin_GetMediaType)(BasePin *This, int iPosition, AM_MEDIA_TYPE *amt); typedef struct BasePinFuncTable { /* Required for Input Pins*/ BasePin_CheckMediaType pfnCheckMediaType; /* Required for Output Pins*/ BasePin_AttemptConnection pfnAttemptConnection; /* Required for BasePinImpl_EnumMediaTypes */ BasePin_GetMediaTypeVersion pfnGetMediaTypeVersion; BasePin_GetMediaType pfnGetMediaType; } BasePinFuncTable; typedef struct BaseOutputPin { /* inheritance C style! */ BasePin pin; IMemInputPin * pMemInputPin; const struct BaseOutputPinFuncTable* pFuncsTable; } BaseOutputPin; typedef HRESULT (WINAPI *BaseOutputPin_DecideBufferSize)(BaseOutputPin *This, IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest); typedef HRESULT (WINAPI *BaseOutputPin_DecideAllocator)(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc); typedef HRESULT (WINAPI *BaseOutputPin_BreakConnect)(BaseOutputPin * This); typedef struct BaseOutputPinFuncTable { /* Required for BaseOutputPinImpl_DecideAllocator */ BaseOutputPin_DecideBufferSize pfnDecideBufferSize; /* Required for BaseOutputPinImpl_AttemptConnection */ BaseOutputPin_DecideAllocator pfnDecideAllocator; BaseOutputPin_BreakConnect pfnBreakConnect; } BaseOutputPinFuncTable; typedef struct BaseInputPin { /* inheritance C style! */ BasePin pin; IMemInputPin IMemInputPin_iface; IMemAllocator * pAllocator; BOOL flushing, end_of_stream; IMemAllocator *preferred_allocator; const struct BaseInputPinFuncTable* pFuncsTable; } BaseInputPin; typedef HRESULT (WINAPI *BaseInputPin_Receive)(BaseInputPin *This, IMediaSample *pSample); typedef struct BaseInputPinFuncTable { /* Optional */ BaseInputPin_Receive pfnReceive; } BaseInputPinFuncTable; /* Base Pin */ HRESULT WINAPI BasePinImpl_GetMediaType(BasePin *This, int iPosition, AM_MEDIA_TYPE *pmt); LONG WINAPI BasePinImpl_GetMediaTypeVersion(BasePin *This); ULONG WINAPI BasePinImpl_AddRef(IPin * iface); HRESULT WINAPI BasePinImpl_Disconnect(IPin * iface); HRESULT WINAPI BasePinImpl_ConnectedTo(IPin * iface, IPin ** ppPin); HRESULT WINAPI BasePinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt); HRESULT WINAPI BasePinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo); HRESULT WINAPI BasePinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir); HRESULT WINAPI BasePinImpl_QueryId(IPin * iface, LPWSTR * Id); HRESULT WINAPI BasePinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI BasePinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum); HRESULT WINAPI BasePinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin); HRESULT WINAPI BasePinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate); /* Base Output Pin */ HRESULT WINAPI BaseOutputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv); ULONG WINAPI BaseOutputPinImpl_Release(IPin * iface); HRESULT WINAPI BaseOutputPinImpl_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI BaseOutputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI BaseOutputPinImpl_Disconnect(IPin * iface); HRESULT WINAPI BaseOutputPinImpl_EndOfStream(IPin * iface); HRESULT WINAPI BaseOutputPinImpl_BeginFlush(IPin * iface); HRESULT WINAPI BaseOutputPinImpl_EndFlush(IPin * iface); HRESULT WINAPI BaseOutputPinImpl_GetDeliveryBuffer(BaseOutputPin * This, IMediaSample ** ppSample, REFERENCE_TIME * tStart, REFERENCE_TIME * tStop, DWORD dwFlags); HRESULT WINAPI BaseOutputPinImpl_Deliver(BaseOutputPin * This, IMediaSample * pSample); HRESULT WINAPI BaseOutputPinImpl_BreakConnect(BaseOutputPin * This); HRESULT WINAPI BaseOutputPinImpl_Active(BaseOutputPin * This); HRESULT WINAPI BaseOutputPinImpl_Inactive(BaseOutputPin * This); HRESULT WINAPI BaseOutputPinImpl_InitAllocator(BaseOutputPin *This, IMemAllocator **pMemAlloc); HRESULT WINAPI BaseOutputPinImpl_DecideAllocator(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc); HRESULT WINAPI BaseOutputPinImpl_AttemptConnection(BasePin *This, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI BaseOutputPin_Construct(const IPinVtbl *OutputPin_Vtbl, LONG outputpin_size, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable, LPCRITICAL_SECTION pCritSec, IPin ** ppPin); /* Base Input Pin */ HRESULT WINAPI BaseInputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv); ULONG WINAPI BaseInputPinImpl_Release(IPin * iface); HRESULT WINAPI BaseInputPinImpl_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI BaseInputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI BaseInputPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI BaseInputPinImpl_EndOfStream(IPin * iface); HRESULT WINAPI BaseInputPinImpl_BeginFlush(IPin * iface); HRESULT WINAPI BaseInputPinImpl_EndFlush(IPin * iface); HRESULT WINAPI BaseInputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate); HRESULT BaseInputPin_Construct(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable, LPCRITICAL_SECTION pCritSec, IMemAllocator *, IPin ** ppPin); typedef struct BaseFilter { IBaseFilter IBaseFilter_iface; LONG refCount; CRITICAL_SECTION csFilter; FILTER_STATE state; REFERENCE_TIME rtStreamStart; IReferenceClock * pClock; FILTER_INFO filterInfo; CLSID clsid; LONG pinVersion; const struct BaseFilterFuncTable* pFuncsTable; } BaseFilter; typedef IPin* (WINAPI *BaseFilter_GetPin)(BaseFilter* iface, int iPosition); typedef LONG (WINAPI *BaseFilter_GetPinCount)(BaseFilter* iface); typedef LONG (WINAPI *BaseFilter_GetPinVersion)(BaseFilter* iface); typedef struct BaseFilterFuncTable { /* Required */ BaseFilter_GetPin pfnGetPin; BaseFilter_GetPinCount pfnGetPinCount; } BaseFilterFuncTable; HRESULT WINAPI BaseFilterImpl_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv); ULONG WINAPI BaseFilterImpl_AddRef(IBaseFilter * iface); ULONG WINAPI BaseFilterImpl_Release(IBaseFilter * iface); HRESULT WINAPI BaseFilterImpl_GetClassID(IBaseFilter * iface, CLSID * pClsid); HRESULT WINAPI BaseFilterImpl_GetState(IBaseFilter * iface, DWORD dwMilliSecsTimeout, FILTER_STATE *pState ); HRESULT WINAPI BaseFilterImpl_SetSyncSource(IBaseFilter * iface, IReferenceClock *pClock); HRESULT WINAPI BaseFilterImpl_GetSyncSource(IBaseFilter * iface, IReferenceClock **ppClock); HRESULT WINAPI BaseFilterImpl_EnumPins(IBaseFilter * iface, IEnumPins **ppEnum); HRESULT WINAPI BaseFilterImpl_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo); HRESULT WINAPI BaseFilterImpl_JoinFilterGraph(IBaseFilter * iface, IFilterGraph *pGraph, LPCWSTR pName ); HRESULT WINAPI BaseFilterImpl_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo); LONG WINAPI BaseFilterImpl_GetPinVersion(BaseFilter* This); VOID WINAPI BaseFilterImpl_IncrementPinVersion(BaseFilter* This); HRESULT WINAPI BaseFilter_Init(BaseFilter * This, const IBaseFilterVtbl *Vtbl, const CLSID *pClsid, DWORD_PTR DebugInfo, const BaseFilterFuncTable* pBaseFuncsTable); /* Enums */ HRESULT WINAPI EnumMediaTypes_Construct(BasePin *iface, BasePin_GetMediaType enumFunc, BasePin_GetMediaTypeVersion versionFunc, IEnumMediaTypes ** ppEnum); HRESULT WINAPI EnumPins_Construct(BaseFilter *base, BaseFilter_GetPin receive_pin, BaseFilter_GetPinCount receive_pincount, BaseFilter_GetPinVersion receive_version, IEnumPins ** ppEnum); /* Quality Control */ typedef struct QualityControlImpl { const IQualityControlVtbl *lpVtbl; IPin *input; IBaseFilter *self; IQualityControl *tonotify; /* Render stuff */ IReferenceClock *clock; REFERENCE_TIME last_in_time, last_left, avg_duration, avg_pt, avg_render, start, stop; REFERENCE_TIME current_jitter, current_rstart, current_rstop, clockstart; double avg_rate; LONG64 rendered, dropped; BOOL qos_handled, is_dropped; } QualityControlImpl; void QualityControlImpl_init(QualityControlImpl *This, IPin *input, IBaseFilter *self); HRESULT WINAPI QualityControlImpl_QueryInterface(IQualityControl *iface, REFIID riid, void **ppv); ULONG WINAPI QualityControlImpl_AddRef(IQualityControl *iface); ULONG WINAPI QualityControlImpl_Release(IQualityControl *iface); HRESULT WINAPI QualityControlImpl_Notify(IQualityControl *iface, IBaseFilter *sender, Quality qm); HRESULT WINAPI QualityControlImpl_SetSink(IQualityControl *iface, IQualityControl *tonotify); void QualityControlRender_Start(QualityControlImpl *This, REFERENCE_TIME tStart); void QualityControlRender_SetClock(QualityControlImpl *This, IReferenceClock *clock); HRESULT QualityControlRender_WaitFor(QualityControlImpl *This, IMediaSample *sample, HANDLE ev); void QualityControlRender_DoQOS(QualityControlImpl *priv); void QualityControlRender_BeginRender(QualityControlImpl *This); void QualityControlRender_EndRender(QualityControlImpl *This); /* Transform Filter */ typedef struct TransformFilter { BaseFilter filter; IPin **ppPins; ULONG npins; AM_MEDIA_TYPE pmt; CRITICAL_SECTION csReceive; const struct TransformFilterFuncTable * pFuncsTable; QualityControlImpl qcimpl; } TransformFilter; typedef HRESULT (WINAPI *TransformFilter_DecideBufferSize) (TransformFilter *iface, IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest); typedef HRESULT (WINAPI *TransformFilter_StartStreaming) (TransformFilter *iface); typedef HRESULT (WINAPI *TransformFilter_StopStreaming) (TransformFilter *iface); typedef HRESULT (WINAPI *TransformFilter_Receive) (TransformFilter* iface, IMediaSample* pIn); typedef HRESULT (WINAPI *TransformFilter_CompleteConnect) (TransformFilter *iface, PIN_DIRECTION dir, IPin *pPin); typedef HRESULT (WINAPI *TransformFilter_BreakConnect) (TransformFilter *iface, PIN_DIRECTION dir); typedef HRESULT (WINAPI *TransformFilter_SetMediaType) (TransformFilter *iface, PIN_DIRECTION dir, const AM_MEDIA_TYPE *pMediaType); typedef HRESULT (WINAPI *TransformFilter_CheckInputType) (TransformFilter *iface, const AM_MEDIA_TYPE *pMediaType); typedef HRESULT (WINAPI *TransformFilter_EndOfStream) (TransformFilter *iface); typedef HRESULT (WINAPI *TransformFilter_BeginFlush) (TransformFilter *iface); typedef HRESULT (WINAPI *TransformFilter_EndFlush) (TransformFilter *iface); typedef HRESULT (WINAPI *TransformFilter_NewSegment) (TransformFilter *iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate); typedef HRESULT (WINAPI *TransformFilter_Notify) (TransformFilter *iface, IBaseFilter *sender, Quality qm); typedef struct TransformFilterFuncTable { /* Required */ TransformFilter_DecideBufferSize pfnDecideBufferSize; /* Optional */ TransformFilter_StartStreaming pfnStartStreaming; TransformFilter_Receive pfnReceive; TransformFilter_StopStreaming pfnStopStreaming; TransformFilter_CheckInputType pfnCheckInputType; TransformFilter_SetMediaType pfnSetMediaType; TransformFilter_CompleteConnect pfnCompleteConnect; TransformFilter_BreakConnect pfnBreakConnect; TransformFilter_EndOfStream pfnEndOfStream; TransformFilter_BeginFlush pfnBeginFlush; TransformFilter_EndFlush pfnEndFlush; TransformFilter_NewSegment pfnNewSegment; TransformFilter_Notify pfnNotify; } TransformFilterFuncTable; HRESULT WINAPI TransformFilterImpl_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv); ULONG WINAPI TransformFilterImpl_Release(IBaseFilter * iface); HRESULT WINAPI TransformFilterImpl_Stop(IBaseFilter * iface); HRESULT WINAPI TransformFilterImpl_Pause(IBaseFilter * iface); HRESULT WINAPI TransformFilterImpl_Run(IBaseFilter * iface, REFERENCE_TIME tStart); HRESULT WINAPI TransformFilterImpl_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin); HRESULT TransformFilter_Construct( const IBaseFilterVtbl *filterVtbl, LONG filter_size, const CLSID* pClsid, const TransformFilterFuncTable* pFuncsTable, IBaseFilter ** ppTransformFilter); /* Source Seeking */ typedef HRESULT (WINAPI *SourceSeeking_ChangeRate)(IMediaSeeking *iface); typedef HRESULT (WINAPI *SourceSeeking_ChangeStart)(IMediaSeeking *iface); typedef HRESULT (WINAPI *SourceSeeking_ChangeStop)(IMediaSeeking *iface); typedef struct SourceSeeking { IMediaSeeking IMediaSeeking_iface; ULONG refCount; SourceSeeking_ChangeStop fnChangeStop; SourceSeeking_ChangeStart fnChangeStart; SourceSeeking_ChangeRate fnChangeRate; DWORD dwCapabilities; double dRate; LONGLONG llCurrent, llStop, llDuration; GUID timeformat; PCRITICAL_SECTION crst; } SourceSeeking; HRESULT SourceSeeking_Init(SourceSeeking *pSeeking, const IMediaSeekingVtbl *Vtbl, SourceSeeking_ChangeStop fnChangeStop, SourceSeeking_ChangeStart fnChangeStart, SourceSeeking_ChangeRate fnChangeRate, PCRITICAL_SECTION crit_sect); HRESULT WINAPI SourceSeekingImpl_GetCapabilities(IMediaSeeking * iface, DWORD * pCapabilities); HRESULT WINAPI SourceSeekingImpl_CheckCapabilities(IMediaSeeking * iface, DWORD * pCapabilities); HRESULT WINAPI SourceSeekingImpl_IsFormatSupported(IMediaSeeking * iface, const GUID * pFormat); HRESULT WINAPI SourceSeekingImpl_QueryPreferredFormat(IMediaSeeking * iface, GUID * pFormat); HRESULT WINAPI SourceSeekingImpl_GetTimeFormat(IMediaSeeking * iface, GUID * pFormat); HRESULT WINAPI SourceSeekingImpl_IsUsingTimeFormat(IMediaSeeking * iface, const GUID * pFormat); HRESULT WINAPI SourceSeekingImpl_SetTimeFormat(IMediaSeeking * iface, const GUID * pFormat); HRESULT WINAPI SourceSeekingImpl_GetDuration(IMediaSeeking * iface, LONGLONG * pDuration); HRESULT WINAPI SourceSeekingImpl_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop); HRESULT WINAPI SourceSeekingImpl_GetCurrentPosition(IMediaSeeking * iface, LONGLONG * pCurrent); HRESULT WINAPI SourceSeekingImpl_ConvertTimeFormat(IMediaSeeking * iface, LONGLONG * pTarget, const GUID * pTargetFormat, LONGLONG Source, const GUID * pSourceFormat); HRESULT WINAPI SourceSeekingImpl_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags); HRESULT WINAPI SourceSeekingImpl_GetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, LONGLONG * pStop); HRESULT WINAPI SourceSeekingImpl_GetAvailable(IMediaSeeking * iface, LONGLONG * pEarliest, LONGLONG * pLatest); HRESULT WINAPI SourceSeekingImpl_SetRate(IMediaSeeking * iface, double dRate); HRESULT WINAPI SourceSeekingImpl_GetRate(IMediaSeeking * iface, double * dRate); HRESULT WINAPI SourceSeekingImpl_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll); /* PosPassThru */ HRESULT WINAPI RendererPosPassThru_RegisterMediaTime(IUnknown *iface, REFERENCE_TIME start); HRESULT WINAPI RendererPosPassThru_ResetMediaTime(IUnknown *iface); HRESULT WINAPI RendererPosPassThru_EOS(IUnknown *iface); HRESULT WINAPI CreatePosPassThru(IUnknown* pUnkOuter, BOOL bRenderer, IPin *pPin, IUnknown **ppPassThru); HRESULT WINAPI PosPassThru_Construct(IUnknown* pUnkOuter, LPVOID *ppPassThru); /* Filter Registration */ typedef REGPINTYPES AMOVIESETUP_MEDIATYPE; typedef REGFILTERPINS AMOVIESETUP_PIN; typedef struct AMOVIESETUP_FILTER { const CLSID *clsid; const WCHAR *name; DWORD merit; UINT pins; const AMOVIESETUP_PIN *pPin; } AMOVIESETUP_FILTER, *LPAMOVIESETUP_FILTER; typedef IUnknown *(CALLBACK *LPFNNewCOMObject)(LPUNKNOWN pUnkOuter, HRESULT *phr); typedef void (CALLBACK *LPFNInitRoutine)(BOOL bLoading, const CLSID *rclsid); typedef struct tagFactoryTemplate { const WCHAR *m_Name; const CLSID *m_ClsID; LPFNNewCOMObject m_lpfnNew; LPFNInitRoutine m_lpfnInit; const AMOVIESETUP_FILTER *m_pAMovieSetup_Filter; } FactoryTemplate; HRESULT WINAPI AMovieDllRegisterServer2(BOOL bRegister); HRESULT WINAPI AMovieSetupRegisterFilter2(const AMOVIESETUP_FILTER *pFilter, IFilterMapper2 *pIFM2, BOOL bRegister); /* Output Queue */ typedef struct tagOutputQueue { CRITICAL_SECTION csQueue; BaseOutputPin * pInputPin; HANDLE hThread; HANDLE hProcessQueue; LONG lBatchSize; BOOL bBatchExact; BOOL bTerminate; BOOL bSendAnyway; struct list *SampleList; const struct OutputQueueFuncTable* pFuncsTable; } OutputQueue; typedef DWORD (WINAPI *OutputQueue_ThreadProc)(OutputQueue *This); typedef struct OutputQueueFuncTable { OutputQueue_ThreadProc pfnThreadProc; } OutputQueueFuncTable; HRESULT WINAPI OutputQueue_Construct( BaseOutputPin *pInputPin, BOOL bAuto, BOOL bQueue, LONG lBatchSize, BOOL bBatchExact, DWORD dwPriority, const OutputQueueFuncTable* pFuncsTable, OutputQueue **ppOutputQueue ); HRESULT WINAPI OutputQueue_Destroy(OutputQueue *pOutputQueue); HRESULT WINAPI OutputQueue_ReceiveMultiple(OutputQueue *pOutputQueue, IMediaSample **ppSamples, LONG nSamples, LONG *nSamplesProcessed); HRESULT WINAPI OutputQueue_Receive(OutputQueue *pOutputQueue, IMediaSample *pSample); VOID WINAPI OutputQueue_EOS(OutputQueue *pOutputQueue); VOID WINAPI OutputQueue_SendAnyway(OutputQueue *pOutputQueue); DWORD WINAPI OutputQueueImpl_ThreadProc(OutputQueue *pOutputQueue); /* Dll Functions */ BOOL WINAPI STRMBASE_DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv); HRESULT WINAPI STRMBASE_DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv); HRESULT WINAPI STRMBASE_DllCanUnloadNow(void);