//回调函数
private void SaveImageCallBack(IntPtr pData, ref MyCamera.MV_FRAME_OUT_INFO pFrameInfo, IntPtr pUser)
{
DateTime dataTime1 = DateTime.Now;
if ((3 * pFrameInfo.nFrameLen + 2048) > m_nBufSizeForSaveImage)
{
m_nBufSizeForSaveImage = 3 * pFrameInfo.nFrameLen + 2048;
m_pBufForSaveImage = new byte[m_nBufSizeForSaveImage];
}
IntPtr pImage = Marshal.UnsafeAddrOfPinnedArrayElement(m_pBufForSaveImage, 0);
MyCamera.MV_SAVE_IMAGE_PARAM stSaveParam = new MyCamera.MV_SAVE_IMAGE_PARAM();
stSaveParam.enImageType = MyCamera.MV_SAVE_IAMGE_TYPE.MV_Image_Bmp;
stSaveParam.enPixelType = pFrameInfo.enPixelType;
stSaveParam.pData = pData;
stSaveParam.nDataLen = pFrameInfo.nFrameLen;
stSaveParam.nHeight = pFrameInfo.nHeight;
stSaveParam.nWidth = pFrameInfo.nWidth;
stSaveParam.pImageBuffer = pImage;
stSaveParam.nBufferSize = m_nBufSizeForSaveImage;
stSaveParam.nImageLen = 0;
int nRet = m_pOperator.SaveImage(ref stSaveParam);
MemoryStream ms = new MemoryStream(); //新建内存流
ms.Write(m_pBufForSaveImage, 0, (int)stSaveParam.nImageLen); //附值
this.Dispatcher.Invoke(DispatcherPriority.Normal,
(ThreadStart) delegate()
{
image_Camera.Source = imageSourceConverter.ConvertFrom(ms) as BitmapFrame;
GC.Collect(); //强制回收资源
}
);
Thread.Sleep(500); //这个延时可以让UI的响应更为流畅，但是图片的刷新较慢，打印的事件lTime在40ms内
}