// VideoPlay.h: interface for the CVideoPlay class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_VIDEOPLAY_H__761FDC3A_3404_11D4_883E_0000210A0111__INCLUDED_)
#define AFX_VIDEOPLAY_H__761FDC3A_3404_11D4_883E_0000210A0111__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <streams.h>             //要訪問DirectShow的接口必須包含該頭文件
#include <mmsystem.h>
#define HELPER_RELEASE(x)  if (x) {x->Release(); x = NULL; }
#define CHECK_ERROR(x, idFailMsg) if (FAILED(hr = (x))) { if (idFailMsg) MessageBox(m_hwnd,idFailMsg,"Error",MB_OK); return;}

#define WM_PLAYOVER WM_USER+300        

class CVideoPlay  
{
public:
	CVideoPlay();
	CVideoPlay(HWND hwnd);
	virtual ~CVideoPlay();

	void FindDevice(CStringList &DevName);  //搜索視頻設備
	void RealPlay();                        //實時圖像的播放
	void PlayFromFile(CString szFile);      //視頻文件的播放
	void PausePlay();                       //暫停播放
	void ResumePlay();						//繼續播放
	void StopPlay();						//停止播放
	void DisplayVideoWin();	  				//顯示視頻播放窗口
	int PlayOver();							

	HWND m_hwnd;							//視頻播放窗口的父窗口句柄
	REFTIME tCurrent;						//視頻文件的當前位置時間
	REFTIME tLength;						//視頻文件的總時間長度
	REFTIME tRemain;						//視頻文件的剩余時間
    IGraphBuilder *pigb;					//視頻文件過濾器圖表生成器接口指針
	ICaptureGraphBuilder *CapPigb;			//捕捉過濾器圖表生成器接口指針
	IGraphBuilder *CappFg;					//實時圖像過濾器圖表生成器接口指針
    IMediaControl *pimc;					//數據流的控制接口指針
    IMediaEventEx *pimex;					//過濾器圖表的事件接口指針
    IVideoWindow *pivw;						//視頻播放窗口接口指針
	IAMDroppedFrames *pDF;					//捕捉過濾器性能查詢接口指針
	IMediaPosition * pmp;					//數據流的位置查詢接口指針
    IBaseFilter *pVCap;						//過濾器接口指針


};

#endif // !defined(AFX_VIDEOPLAY_H__761FDC3A_3404_11D4_883E_0000210A0111__INCLUDED_)