www.pudn.com > AVChat0926.rar > CDXGraph.h

// 
// CDXGraph.h 
// 
 
#ifndef __H_CDXGraph__ 
#define __H_CDXGraph__ 
 
// Filter graph notification to the specified window 
#define WM_GRAPHNOTIFY  (WM_USER+20) 
 
#include  
#include "CMsgStation.h" 
 
class CDXGraph : public CMsgStation 
{ 
private: 
	IGraphBuilder *     mGraph; 
	IMediaControl *		mMediaControl; 
	IMediaEventEx *		mEvent; 
	IBasicVideo *		mBasicVideo; 
	IBasicAudio *		mBasicAudio; 
	IVideoWindow  *		mVideoWindow; 
	IMediaSeeking *		mSeeking; 
 
	DWORD				mObjectTableEntry; 
 
	// For fast reference! 
	enum {GS_Stopped, GS_Paused, GS_Running} mGraphState;                 
 
public: 
	CDXGraph(); 
	virtual ~CDXGraph(); 
 
public: 
	virtual BOOL Create(void); 
	virtual void Release(void); 
	virtual BOOL Attach(IGraphBuilder * inGraphBuilder); 
 
	IGraphBuilder * GetGraph(void); // Not outstanding reference count 
	BOOL AddFilter(IBaseFilter * inFilter, LPCWSTR inName); 
 
	BOOL ConnectFilters(IPin * inOutputPin, IPin * inInputPin, const AM_MEDIA_TYPE * inMediaType = 0); 
	void DisconnectFilters(IPin * inOutputPin); 
 
	BOOL SetDisplayWindow(HWND inWindow); 
	BOOL SetNotifyWindow(HWND inWindow); 
	BOOL ResizeVideoWindow(long inLeft, long inTop, long inWidth, long inHeight); 
	void HandleEvent(WPARAM inWParam, LPARAM inLParam); 
 
	BOOL Run(void);        // Control filter graph 
	BOOL Stop(void); 
	BOOL Pause(void); 
	BOOL IsRunning(void);  // Filter graph status 
	BOOL IsStopped(void); 
	BOOL IsPaused(void); 
 
	BOOL SetFullScreen(BOOL inEnabled); 
	BOOL GetFullScreen(void); 
 
	BOOL SetSyncSource(IBaseFilter * inFilter); 
	BOOL SetDefaultSyncSource(void); 
 
	// IMediaSeeking 
	BOOL GetCurrentPosition(double * outPosition); 
	BOOL GetStopPosition(double * outPosition); 
	BOOL SetCurrentPosition(double inPosition); 
	BOOL SetStartStopPosition(double inStart, double inStop); 
	BOOL GetDuration(double * outDuration); 
	BOOL SetPlaybackRate(double inRate); 
 
	// Attention: range from -10000 to 0, and 0 is FULL_VOLUME. 
	BOOL SetAudioVolume(long inVolume); 
	long GetAudioVolume(void); 
	// Attention: range from -10000(left) to 10000(right), and 0 is both. 
	BOOL SetAudioBalance(long inBalance); 
	long GetAudioBalance(void); 
 
	// When using VMR, it's reliable! 
	BOOL GetCurrentImage(const char * inFile); 
 
private: 
	void AddToObjectTable(void) ; 
	void RemoveFromObjectTable(void); 
	 
	BOOL QueryInterfaces(void); 
}; 
 
#endif // __H_CDXGraph__