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

// 
// UFilterUtils.h 
// 
 
#ifndef __H_UFilterUtils__ 
#define __H_UFilterUtils__ 
 
typedef enum 
{ 
	PIN_VIDEO, 
	PIN_AUDIO, 
	PIN_STREAM, 
	PIN_INTERLEAVED, 
	PIN_UNKNOWN 
} PIN_MEDIA; 
 
class UFilterUtils 
{ 
public: 
	UFilterUtils() {}; 
	~UFilterUtils() {}; 
 
	// NOT outstanding reference 
	static IPin * GetPin(IBaseFilter * inFilter, BOOL inInput,  
		const char * inPartialName = NULL); 
	static IPin * GetUnconnectedPin(IBaseFilter * inFilter, BOOL inInput); 
	static BOOL GetPinCount(IBaseFilter * inFilter, int & outInputPin,  
		int & outOutputPin); 
	static BOOL IsCompletelyConnected(IBaseFilter * inFilter); 
 
	// Determint the pin type: audio, video, interleaved or stream 
	static PIN_MEDIA GetPinMediaType(IPin * inPin); 
	static BOOL HasMediaType(IPin * inPin, GUID inMajorType, GUID inSubType); 
}; 
 
#endif // __H_UFilterUtils__