海康工业相机 SDK （C# ）二次开发 -------适配Gray图像和RGB图像

话不多说，直接上关键代码！

关键代码一：在初始化相机的时候对相机的像素格式进行判断

private string InitCallBack()    //匹配相机像素格式
        {
            ImageInfo ii = new ImageInfo();
            CameraErrorMsg = GetImageInfo(ref ii);
            if (CameraErrorMsg != null)
                return CameraErrorMsg;
            if (IsMonoData((MyCamera.MvGvspPixelType)ii.PixelFormat))   //灰度图
            {
                CameraErrorMsg = SetPixelFormat(ii.PixelFormat);
                if (CameraErrorMsg != null)
                    return CameraErrorMsg;

                ImageCallback = new MyCamera.cbOutputExdelegate(CallbackGray);
                nRet = m_pMyCamera.MV_CC_RegisterImageCallBackEx_NET(ImageCallback, IntPtr.Zero);
                if (MyCamera.MV_OK != nRet)
                    return HikCamErrorInfo.ReturnErrorMsg("注册回调函数失败", nRet);
                ii.IsColor = false;
            }
            else if (IsColorData((MyCamera.MvGvspPixelType)ii.PixelFormat))
            {
                CameraErrorMsg = SetPixelFormat(ii.PixelFormat);
                if (CameraErrorMsg != null)
                    return CameraErrorMsg;

                ImageCallback = new MyCamera.cbOutputExdelegate(CallbackBGR);
                nRet = m_pMyCamera.MV_CC_RegisterImageCallBackForBGR_NET(ImageCallback, IntPtr.Zero);
                if (MyCamera.MV_OK != nRet)
                    return HikCamErrorInfo.ReturnErrorMsg("注册回调函数失败", nRet);

                ii.IsColor = true;
            }
            else
            {
                return HikCamErrorInfo.ReturnErrorMsg("未知的像素格式" + Enum.GetName(typeof(MyCamera.MvGvspPixelType), ii.PixelFormat), -1);
            }
            if (OpenCameraOverEvent != null)
                OpenCameraOverEvent(ii);
            return null;
        }

关键代码二：灰度图取流回调

 //灰度图
        private void CallbackGray(IntPtr pData, ref MyCamera.MV_FRAME_OUT_INFO_EX pFrameInfo, IntPtr pUser)
        {
            try
            {
                Int32 nWidth = pFrameInfo.nWidth;
                Int32 nHeight = pFrameInfo.nHeight;
                Int32 lenData = nWidth * nHeight * 1; //数据长度，8位图像数据的长度=宽度*高度*1
                byte[] buffer = new byte[lenData]; //创建指定长度byte数据
                MyCamera.MvGvspPixelType enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono8;
               // MyCamera.MvGvspPixelType enDstPixelType;
               //if (IsMonoData(pFrameInfo.enPixelType))
               // {
               //   enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono8;
               //}
               //else if (IsColorData(pFrameInfo.enPixelType))
               //{
               //    enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_BGR8_Packed;
               //}
               //else
               //{
               //    return;
               //}
                IntPtr pImage = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, 0);

                MyCamera.MV_PIXEL_CONVERT_PARAM stConverPixelParam = new MyCamera.MV_PIXEL_CONVERT_PARAM();
                stConverPixelParam.nWidth = pFrameInfo.nWidth;
                stConverPixelParam.nHeight = pFrameInfo.nHeight;
                stConverPixelParam.pSrcData = pData;
                stConverPixelParam.nSrcDataLen = pFrameInfo.nFrameLen;
                stConverPixelParam.enSrcPixelType = pFrameInfo.enPixelType;
                stConverPixelParam.enDstPixelType = enDstPixelType;
                stConverPixelParam.pDstBuffer = pImage;
                stConverPixelParam.nDstBufferSize = (uint)lenData;

                nRet = m_pMyCamera.MV_CC_ConvertPixelType_NET(ref stConverPixelParam);
                if (MyCamera.MV_OK != nRet)
                {
                    return;
                }
                GetImageEventArgs e = new GetImageEventArgs()
                {
                    buffer = buffer,
                    pImage = pImage,
                    Height = nHeight,
                    Width = nWidth,
                    IsColor = IsColorData(pFrameInfo.enPixelType)
                };
                if (GetImageEvent != null)
                {
                    GetImageEvent(this, e);
                }
               // GC.Collect();

            }
            catch (Exception ex)
            {
                WritelogStatic.WriteSocketLog(ex.ToString());
               // throw new Exception(ex.ToString());
            }
        }

关键代码三：RGB图取图回调

//彩色图
        private void CallbackBGR(IntPtr pData, ref MyCamera.MV_FRAME_OUT_INFO_EX pFrameInfo, IntPtr pUser)  //gray    CallbackBGR
        {
            try
            {
                Int32 nWidth = pFrameInfo.nWidth;
                Int32 nHeight = pFrameInfo.nHeight;
                Int32 lenData = nWidth * 3 * nHeight;//数据长度，24位图像数据的长度=宽度*高度*3
                byte[] buffer = new byte[lenData];//创建指定长度byte数据
                MyCamera.MvGvspPixelType enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_BGR8_Packed;


                //MyCamera.MvGvspPixelType enDstPixelType;
                //if (IsMonoData(pFrameInfo.enPixelType))
                //{
                //    enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono8;
                //}
                //else if (IsColorData(pFrameInfo.enPixelType))
                //{
                //    enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_BGR8_Packed;
                //}
                //else
                //{
                //    return;
                //}
                IntPtr pImage = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, 0);

                MyCamera.MV_PIXEL_CONVERT_PARAM stConverPixelParam = new MyCamera.MV_PIXEL_CONVERT_PARAM();
                stConverPixelParam.nWidth = pFrameInfo.nWidth;//图像宽度
                stConverPixelParam.nHeight = pFrameInfo.nHeight;//图像高度
                stConverPixelParam.pSrcData = pData;//源数据
                stConverPixelParam.nSrcDataLen = pFrameInfo.nFrameLen;//
                stConverPixelParam.enSrcPixelType = pFrameInfo.enPixelType;//源数据格式
                stConverPixelParam.enDstPixelType = enDstPixelType;
                stConverPixelParam.pDstBuffer = pImage;//转换后的数据指针
                stConverPixelParam.nDstBufferSize = (uint)lenData;//数据大小

                nRet = m_pMyCamera.MV_CC_ConvertPixelType_NET(ref stConverPixelParam);//格式转换
                if (MyCamera.MV_OK != nRet)
                {
                    return;
                }
                GetImageEventArgs e = new GetImageEventArgs()
                {
                    buffer = buffer,
                    pImage = pImage,
                    Height = nHeight,
                    Width = nWidth,
                    IsColor = IsColorData(pFrameInfo.enPixelType)
                };
                if (GetImageEvent != null)
                {
                    GetImageEvent(this, e);
                }
               // GC.Collect();

            }
            catch (Exception ex)
            {
                WritelogStatic.WriteSocketLog(ex.ToString());
               // throw new Exception(ex.ToString());
            }
        }