www.pudn.com > AVChat1.rar > CDXFilter.h

// 
// CDXFilter.h 
// 
 
#ifndef __H_CDXFilter__ 
#define __H_CDXFilter__ 
 
#include  
 
class CDXFilter   
{ 
protected: 
	IGraphBuilder *		mGraph; 
	IBaseFilter *		mFilter; 
	GUID				mClsid; 
	WCHAR				mName[256]; 
 
public: 
	CDXFilter(IGraphBuilder * inGraph, GUID inClsid = GUID_NULL,  
		const char * inName = NULL); 
	virtual ~CDXFilter(void); 
 
	virtual BOOL CreateFilter(void); 
	virtual void ReleaseFilter(void); 
 
	BOOL Attach(IBaseFilter * inFilter, const char * inName = NULL); 
	// Simply detach, NOT remove filter from the graph 
	void Detach(void); 
	BOOL QueryInterface(REFIID inIID, LPVOID * outObj); 
 
	IBaseFilter * GetFilter(void);  // NOT outstanding reference 
	 
	// Several method to retrieve specified pin when filter connecting 
	// NOT outstanding reference 
	IPin * GetPin(BOOL inInput, const char * inPartialName = NULL); 
	BOOL GetPinCount(int & outInputPin, int & outOutputPin); 
}; 
 
#endif // __H_CDXFilter__