OpenCV读取1394b相机的数据buffer，转化为IplImage类型，实时显示，碰到问题，求助，在线等

OpenCV读取1394b相机的数据buffer，转化为IplImage类型，实时显示，碰到问题，求助，在线等m_width=m_avt1.get_SizeX();
m_height=m_avt1.get_SizeY();
VARIANT v=m_avt1.GetImageData();
IplImage * pImage = cvCreateImageHeader(cvSize(m_width,m_height),IPL_DEPTH_8U,1);
cvSetData(pImage,v.pcVal,m_width);
cvNamedWindow("aa",CV_WINDOW_AUTOSIZE);
cvShowImage("aa",pImage);
cvReleaseImageHeader(&pImage);