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CDXGraph.h
Package: VC++视频传输.rar　[view]
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Upload Date: 2010-03-30
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Visual C++

CDXGraph.h：Code Content
  1. //
  2. // CDXGraph.h
  3. //
  5. #ifndef __H_CDXGraph__
  6. #define __H_CDXGraph__
  8. // Filter graph notification to the specified window
  9. #define WM_GRAPHNOTIFY  (WM_USER+20)
  11. class CDXGraph
  12. {
  13. private:
  14. IGraphBuilder *     mGraph;  
  15. IMediaControl * mMediaControl;
  16. IMediaEventEx * mEvent;
  17. IBasicVideo * mBasicVideo;
  18. IBasicAudio * mBasicAudio;
  19. IVideoWindow  * mVideoWindow;
  20. IMediaSeeking * mSeeking;
  22. DWORD mObjectTableEntry; 
  24. public:
  25. CDXGraph();
  26. virtual ~CDXGraph();
  28. public:
  29. virtual bool Create(void);
  30. virtual void Release(void);
  31. virtual bool Attach(IGraphBuilder * inGraphBuilder);
  32. HRESULT QueryInterface(REFIID inIID, void ** ppvObject);
  34. IGraphBuilder * GetGraph(void); // Not outstanding reference count
  35. IMediaEventEx * GetEventHandle(void);
  37. bool ConnectFilters(IPin * inOutputPin, IPin * inInputPin, const AM_MEDIA_TYPE * inMediaType = 0);
  38. void DisconnectFilters(IPin * inOutputPin);
  40. bool SetDisplayWindow(HWND inWindow);
  41. bool SetNotifyWindow(HWND inWindow);
  42. bool ResizeVideoWindow(long inLeft, long inTop, long inWidth, long inHeight);
  43. void HandleEvent(WPARAM inWParam, LPARAM inLParam);
  45. bool Run(void);        // Control filter graph
  46. bool Stop(void);
  47. bool Pause(void);
  48. bool IsRunning(void);  // Filter graph status
  49. bool IsStopped(void);
  50. bool IsPaused(void);
  52. bool SetFullScreen(BOOL inEnabled);
  53. bool GetFullScreen(void);
  55. // IMediaSeeking
  56. bool GetCurrentPosition(double * outPosition);
  57. bool GetStopPosition(double * outPosition);
  58. bool SetCurrentPosition(double inPosition);
  59. bool SetStartStopPosition(double inStart, double inStop);
  60. bool GetDuration(double * outDuration);
  61. bool SetPlaybackRate(double inRate);
  63. bool RenderFile(const char * inFile);
  65. private:
  66. void AddToObjectTable(void) ;
  67. void RemoveFromObjectTable(void);
  69. bool QueryInterfaces(void);
  70. };
  72. #endif // __H_CDXGraph__