C# 连接大华工业相机

需要导入这两个动态链接库

/// <summary>/// 大华相机SDK/// </summary>public class SDK_DaHua : SDK_Camera{/// <summary>/// 相机实例/// </summary>private IDevice device;/// <summary>/// 是否为彩色/// </summary>private bool IsColor = false;/// <summary>/// 相机名称/// </summary>private string Cam_Name;/// <summary>/// /// </summary>public override bool IsOpen {get {if (device!=null){return device.IsOpen;}return false;}   }/// <summary>/// 图像事件 相机名称图源/// </summary>public override event ImageDelegate Image_Delegate;/// <summary>/// /// </summary>~SDK_DaHua(){ }/// <summary>/// 关闭相机/// </summary>/// <returns></returns>public override void Close_Camera(){if (device == null) return;try{device.ShutdownGrab();device.StreamGrabber.ImageGrabbed -= OnImageGrabbed;device.Close();}catch {}}#region 曝光/// <summary>///  设置曝光/// </summary>public override double SetExposureTime(double Value){if (device == null) return 0; using (IFloatParameter p = device.ParameterCollection[new FloatName("ExposureTime")]){if (Value <= p.GetMaximum() && Value >= p.GetMinimum()){p.SetValue(Value);}return p.GetValue();}}/// <summary>/// 获取曝光/// </summary>public override double GetExposureTime(){if (device == null) return 0;using (IFloatParameter p = device.ParameterCollection[new FloatName("ExposureTime")]){return p.GetValue();}}#endregion/// <summary>/// 打开相机/// </summary>/// <param name="Cam_Name"></param>/// <returns></returns>public override bool Open_Camera(string Cam_Name){List<IDeviceInfo> li = Enumerator.EnumerateDevices();for (int i = 0; i < li.Count; i++){if (li[i].Name == Cam_Name.Trim()){//通过设备名称打开相机device = Enumerator.GetDeviceByUserID(Cam_Name);this.Cam_Name = Cam_Name;                    if (!device.Open()){//相机打开失败return false;}//设置 图像帧格式IStringParameter pa = device.ParameterCollection[new StringName("DeviceModelName")];if (pa.GetValue().Contains("C")){using (IEnumParameter p = device.ParameterCollection[ParametrizeNameSet.ImagePixelFormat]){p.SetValue("BayerRG8");IsColor = true;}}else{using (IEnumParameter p = device.ParameterCollection[ParametrizeNameSet.ImagePixelFormat]){p.SetValue("Mono8");IsColor = false;}}// 设置缓存个数为8（默认值为16） device.StreamGrabber.SetBufferCount(8);// 注册码流回调事件  使用内部线程捕获帧数据device.StreamGrabber.ImageGrabbed += OnImageGrabbed;//相机掉线回调device.ConnectionLost += OnConnectLoss;//设置默认的模式device.TriggerSet.Open(TriggerSourceEnum.Software);if (!device.GrabUsingGrabLoopThread()){//开始抓取失败return false;}return true;}}return false;}      /// <summary>/// 相机丢失回调      /// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void OnConnectLoss(object sender, EventArgs e){device.ShutdownGrab();device.Dispose();device = null;}/// <summary>/// 码流数据回调/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void OnImageGrabbed(Object sender, GrabbedEventArgs e){if (IsColor){int nRGB = RGBFactory.EncodeLen(e.GrabResult.Width, e.GrabResult.Height, true);IntPtr pData = System.Runtime.InteropServices.Marshal.AllocHGlobal(nRGB);RGBFactory.ToRGB(e.GrabResult.Image, e.GrabResult.Width, e.GrabResult.Height, true, e.GrabResult.PixelFmt, pData, nRGB);HOperatorSet.GenImageInterleaved(out HObject ho_image, (HTuple)pData, "bgr", e.GrabResult.Width, e.GrabResult.Height, 0, "byte",e.GrabResult.Width, e.GrabResult.Height, 0, 0, 8, 0);Image_Delegate?.Invoke(Cam_Name, ho_image?.Clone());System.Runtime.InteropServices.Marshal.FreeHGlobal(pData);ho_image?.Dispose();GC.Collect();}else{int nRGB = RGBFactory.EncodeLen(e.GrabResult.Width, e.GrabResult.Height, false);IntPtr pData = System.Runtime.InteropServices.Marshal.AllocHGlobal(nRGB);System.Runtime.InteropServices.Marshal.Copy(e.GrabResult.Image, 0, pData, e.GrabResult.ImageSize);HOperatorSet.GenEmptyObj(out HObject ho_image);ho_image.Dispose();HOperatorSet.GenImage1Extern(out ho_image, "byte", e.GrabResult.Width, e.GrabResult.Height, pData, 0);Image_Delegate?.Invoke(Cam_Name, ho_image?.Clone());System.Runtime.InteropServices.Marshal.FreeHGlobal(pData);ho_image?.Dispose();GC.Collect();}}#region 软触发模式/// <summary>/// 软触发模式，开启/关闭 软触发/// </summary>public override TriggerMode GetTriggerMode(){if (device == null) return TriggerMode.On;using (IEnumParameter p = device.ParameterCollection[ParametrizeNameSet.TriggerMode]){return (TriggerMode)Enum.Parse(typeof(TriggerMode), p.GetValue());}}/// <summary>/// 设置触发模式/// </summary>/// <param name="mode"></param>public override void SetTriggerMode(TriggerMode mode){if (device == null) return;using (IEnumParameter p = device.ParameterCollection[ParametrizeNameSet.TriggerMode]){p.SetValue(mode.ToString());if (mode==TriggerMode.On){SetTriggerSource(TriggerSource.Software);device.TriggerSet.Open(TriggerSourceEnum.Software);}}}#endregion#region 软触发触发源/// <summary>/// 获取软触发触发源/// </summary>/// <returns></returns>public override TriggerSource GetTriggerSource(){if (device!=null) return TriggerSource.Software;using (IEnumParameter p = device.ParameterCollection[ParametrizeNameSet.TriggerSource]){return (TriggerSource)Enum.Parse(typeof(TriggerSource), p.GetValue());}}/// <summary>/// 设置软触发触发源/// </summary>/// <param name="source"></param>public override void SetTriggerSource(TriggerSource source){if (device == null) return;using (IEnumParameter p = device.ParameterCollection[ParametrizeNameSet.TriggerSource]){p.SetValue(source.ToString());}}#endregion#region 增益/// <summary>/// 设置增益/// </summary>/// <param name="Value"></param>/// <returns></returns>public override double SetGainRaw(double Value){if (device == null) return 0;// 设置增益            using (IFloatParameter p = device.ParameterCollection[ParametrizeNameSet.GainRaw]){if (Value <= p.GetMaximum() && Value >= p.GetMinimum()){p.SetValue(Value);}return p.GetValue();}}/// <summary>/// 获取增益/// </summary>/// <returns></returns>public override double GetGainRaw(){if (device == null) return 0;using (IFloatParameter p = device.ParameterCollection[ParametrizeNameSet.GainRaw]){return p.GetValue();}}#endregion/// <summary>/// 执行软触发，单帧触发/// </summary>public override bool TriggerSoftware(){if (device==null){return false;}TriggerMode p= GetTriggerMode();if (device.IsGrabbing==false){device.GrabUsingGrabLoopThread();}if (device.IsTriggerOn==true&& TriggerMode.Off== GetTriggerMode()){SetTriggerMode(TriggerMode.On);SetTriggerSource(TriggerSource.Software);device.TriggerSet.Open(TriggerSourceEnum.Software);}return device.ExecuteSoftwareTrigger();}/// <summary>///关闭流通道/// </summary>public override void CloseConsecutive(){if (device == null) return;           if (device.IsGrabbing){device.StreamGrabber.Stop();}}/// <summary>/// 实时采集/// </summary>public override void Acquisition(){if (device == null) return;if (!device.IsGrabbing){device.GrabUsingGrabLoopThread();}//获取采集模式using (IEnumParameter p = device.ParameterCollection[ParametrizeNameSet.AcquisitionMode]){//不等于连续模式if (p.GetValue() != AcquisitionModeEnum.Continuous){//先停止流CloseConsecutive();//设置连续模式p.SetValue(AcquisitionModeEnum.Continuous);}}if (GetTriggerMode() == TriggerMode.On){SetTriggerMode(TriggerMode.Off);}//开启流device.GrabUsingGrabLoopThread();}}

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