SVCam.h

#define DECLARE_PTR(type, ptr, expr) type* ptr = (type*)(expr);


EXTERN_C const GUID CLSID_SimpleVirtualCamFilter;



//------------------------------------------------------------------------------
// Forward Declarations
//------------------------------------------------------------------------------
// The class managing the output pin
class CSimpleVirtualCamFilterStream;

//------------------------------------------------------------------------------
// Class CSimpleVirtualCamFilter
//
// This is the main class for the virtual cam filter. It inherits from
// CSource, the DirectShow base class for source filters.
//------------------------------------------------------------------------------
class CSimpleVirtualCamFilter : public CSource
{
public:

	// The only allowed way to create Bouncing balls!
	static CUnknown * WINAPI CreateInstance(LPUNKNOWN lpunk, HRESULT *phr);
	STDMETHODIMP QueryInterface(REFIID riid, void **ppv);

	IFilterGraph *GetGraph() { return m_pGraph; }

private:

	// It is only allowed to to create these objects with CreateInstance
	CSimpleVirtualCamFilter(LPUNKNOWN lpunk, HRESULT *phr);

}; // CSimpleVirtualCamFilter

//------------------------------------------------------------------------------
// Class CBallStream
//
// This class implements the stream which is used to output the bouncing ball
// data from the source filter. It inherits from DirectShows's base
// CSourceStream class.
//------------------------------------------------------------------------------
class CSimpleVirtualCamFilterStream : public CSourceStream, public IAMStreamConfig, public IKsPropertySet, public IAMFilterMiscFlags
{

public:

	//////////////////////////////////////////////////////////////////////////
	//  IUnknown
	//////////////////////////////////////////////////////////////////////////
	STDMETHODIMP QueryInterface(REFIID riid, void **ppv);
	STDMETHODIMP_(ULONG) AddRef();
	STDMETHODIMP_(ULONG) Release();

	//////////////////////////////////////////////////////////////////////////
	//  IQualityControl
	//////////////////////////////////////////////////////////////////////////
	STDMETHODIMP Notify(IBaseFilter * pSender, Quality q);

	//////////////////////////////////////////////////////////////////////////
	//  IAMStreamConfig
	//////////////////////////////////////////////////////////////////////////
	HRESULT STDMETHODCALLTYPE SetFormat(AM_MEDIA_TYPE *pmt);
	HRESULT STDMETHODCALLTYPE GetFormat(AM_MEDIA_TYPE **ppmt);
	HRESULT STDMETHODCALLTYPE GetNumberOfCapabilities(int *piCount, int *piSize);
	HRESULT STDMETHODCALLTYPE GetStreamCaps(int iIndex, AM_MEDIA_TYPE **pmt, BYTE *pSCC);

	//////////////////////////////////////////////////////////////////////////
	//  IKsPropertySet
	//////////////////////////////////////////////////////////////////////////
	HRESULT STDMETHODCALLTYPE Set(REFGUID guidPropSet, DWORD dwID, void *pInstanceData, DWORD cbInstanceData, void *pPropData, DWORD cbPropData);
	HRESULT STDMETHODCALLTYPE Get(REFGUID guidPropSet, DWORD dwPropID, void *pInstanceData, DWORD cbInstanceData, void *pPropData, DWORD cbPropData, DWORD *pcbReturned);
	HRESULT STDMETHODCALLTYPE QuerySupported(REFGUID guidPropSet, DWORD dwPropID, DWORD *pTypeSupport);

	//////////////////////////////////////////////////////////////////////////
	//  IAMFilterMiscFlags
	//////////////////////////////////////////////////////////////////////////

	ULONG STDMETHODCALLTYPE GetMiscFlags(void);

	//////////////////////////////////////////////////////////////////////////
	//  CSourceStream
	//////////////////////////////////////////////////////////////////////////
	CSimpleVirtualCamFilterStream(HRESULT *phr, CSimpleVirtualCamFilter *pParent, LPCWSTR pPinName);
	~CSimpleVirtualCamFilterStream();

	HRESULT FillBuffer(IMediaSample *pms);
	HRESULT DecideBufferSize(IMemAllocator *pIMemAlloc, ALLOCATOR_PROPERTIES *pProperties);
	HRESULT CheckMediaType(const CMediaType *pMediaType);
	HRESULT GetMediaType(int iPosition, CMediaType *pmt);
	HRESULT SetMediaType(const CMediaType *pmt);
	HRESULT OnThreadCreate(void);

private:
	
	CSimpleVirtualCamFilter *m_pParent;
	REFERENCE_TIME m_rtLastTime;
	HBITMAP m_hLogoBmp;
	CCritSec m_cSharedState;
	IReferenceClock *m_pClock;
	
}; // CSimpleVirtualCamFilterStream




/*
// This class is exported from the SVCam.dll
class SVCAM_API CSVCam {
public:
	CSVCam(void);
	// TODO: add your methods here.
};

extern SVCAM_API int nSVCam;

SVCAM_API int fnSVCam(void);

*/