opencv实现显示摄像头视频

c++ 编写了一个类，调用opencv函数实现显示摄像头视频： class avishow { public: double fps; CvSize size; avishow(); avishow(char * aviOutName); ~avishow(); IplImage * currentFrameGet(); int currentFrameNum(); bool aviSave(IplImage* p); bool frameSave(IplImage * pFrame,char * frameOutName); private: int pFrameNum; CvCapture* pCapture; CvVideoWriter* writer; };