using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using EasyIDSDK_Net;
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namespace LB_VisionProcesses.BarcodeReaders.Huayray
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{
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/// <summary>
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/// 华睿读码器实现类
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/// </summary>
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public class HRBarcodeReader : BarcodeReaderBase
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{
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private EidCamera _camera;
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private EidCamera.EidFrameCallback _frameCallback;
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private GCHandle _callbackHandle;
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public override BarcodeReaderBrand Brand => BarcodeReaderBrand.Huayray;
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public HRBarcodeReader()
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{
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_camera = new EidCamera();
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_frameCallback = OnFrameReceived;
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}
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/// <summary>
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/// 获取在线的华睿读码器列表
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/// </summary>
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public override List<string> GetDeviceList()
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{
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List<string> snList = new List<string>();
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try
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{
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EidCamera.EidDeviceList devList = new EidCamera.EidDeviceList();
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int nRet = EidCamera.eidEnumDevices_Net(ref devList, 0);
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if (nRet == EidCamera.eidErrorOK && devList.num > 0)
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{
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for (int i = 0; i < devList.num; i++)
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{
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EidCamera.EidDeviceInfo deviceInfo = (EidCamera.EidDeviceInfo)Marshal.PtrToStructure(
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devList.infos + Marshal.SizeOf(typeof(EidCamera.EidDeviceInfo)) * i,
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typeof(EidCamera.EidDeviceInfo));
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snList.Add(deviceInfo.serialNumber);
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}
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}
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}
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catch (Exception ex)
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{
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// TODO: Log error
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}
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return snList;
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}
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public override bool Open(string sn)
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{
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if (IsConnected) Close();
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try
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{
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// 先进行一次枚举，确保 SDK 能够发现设备（部分 SDK 要求在打开前必须执行枚举）
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GetDeviceList();
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// 如果之前失败过，重新创建相机对象确保干净状态
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if (_camera == null)
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{
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_camera = new EidCamera();
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}
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// 确保之前的句柄已释放
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try { _camera.eidReleaseHandle_Net(); } catch { }
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// 创建句柄
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int nRet = _camera.eidCreateDevice_Net(sn, EidCamera.EidDeviceDataType.eidDeviceDataTypeSN);
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if (nRet != EidCamera.eidErrorOK) return false;
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if (nRet != EidCamera.eidErrorOK)
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{
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_camera = null;
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return false;
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}
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// 分配固定句柄给委托，防止被 GC 回收
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if (!_callbackHandle.IsAllocated)
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{
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_callbackHandle = GCHandle.Alloc(_frameCallback);
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}
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// 打开设备
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nRet = _camera.eidOpenDevice_Net();
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if (nRet != EidCamera.eidErrorOK)
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{
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_camera.eidReleaseHandle_Net();
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if (_callbackHandle.IsAllocated) _callbackHandle.Free();
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_camera = null;
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return false;
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}
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// 注册回调
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nRet = _camera.eidRegisterFrameCallback_Net(_frameCallback, IntPtr.Zero);
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if (nRet != EidCamera.eidErrorOK)
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{
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_camera.eidCloseDevice_Net();
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_camera.eidReleaseHandle_Net();
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if (_callbackHandle.IsAllocated) _callbackHandle.Free();
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_camera = null;
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return false;
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}
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this.SN = sn;
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this.IsConnected = true;
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return true;
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}
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catch
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{
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// 发生异常时确保释放资源
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try { _camera?.eidCloseDevice_Net(); } catch { }
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try { _camera?.eidReleaseHandle_Net(); } catch { }
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if (_callbackHandle.IsAllocated) _callbackHandle.Free();
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// 发生异常时释放相机对象，确保下次创建新实例
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_camera = null;
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return false;
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}
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}
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public override bool Close()
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{
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if (!IsConnected) return true;
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try
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{
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if (IsConnected)
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{
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StopGrabbing();
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_camera.eidCloseDevice_Net();
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_camera.eidReleaseHandle_Net();
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_camera?.eidCloseDevice_Net();
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}
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// 无论是否连接，都尝试释放句柄
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_camera?.eidReleaseHandle_Net();
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// 释放回调句柄
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if (_callbackHandle.IsAllocated)
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{
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_callbackHandle.Free();
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}
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// 释放相机对象引用，确保SDK资源完全释放
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_camera = null;
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this.IsConnected = false;
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this.SN = string.Empty;
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this.IsGrabbing = false;
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return true;
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}
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catch
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{
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return false;
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}
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}
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public override bool StartGrabbing()
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{
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if (!IsConnected) return false;
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if (IsGrabbing) return true;
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int nRet = _camera.eidStartGrabbing_Net(0);
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if (nRet == EidCamera.eidErrorOK)
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{
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this.IsGrabbing = true;
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return true;
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}
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return false;
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}
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public override bool StopGrabbing()
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{
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if (!IsGrabbing) return true;
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int nRet = _camera.eidStopGrabbing_Net();
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this.IsGrabbing = false;
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return nRet == EidCamera.eidErrorOK;
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}
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public override bool SoftTrigger()
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{
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if (!IsConnected || !IsGrabbing) return false;
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int nRet = _camera.eidExecCommandFeature_Net("TriggerSoftware");
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return nRet == EidCamera.eidErrorOK;
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}
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public override bool SetTriggerMode(bool isSoftware)
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{
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if (!IsConnected) return false;
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int nRet;
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if (isSoftware)
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{
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// 软触发模式
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nRet = _camera.eidSetEnumFeatureSymbol_Net("TriggerType", "SingleFrame");
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if (nRet != EidCamera.eidErrorOK) return false;
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nRet = _camera.eidSetEnumFeatureSymbol_Net("TriggerSource", "Software");
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}
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else
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{
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// 自由运行或硬触发 (此处默认设为自由运行，可根据需要扩展)
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nRet = _camera.eidSetEnumFeatureSymbol_Net("TriggerType", "FreeRun");
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}
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return nRet == EidCamera.eidErrorOK;
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}
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/// <summary>
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/// SDK帧回调处理
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/// </summary>
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private void OnFrameReceived(ref EidCamera.EidFrameInfo frameInfo, IntPtr userData)
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{
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try
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{
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List<BarcodeInfo> barcodeInfos = new List<BarcodeInfo>();
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// 解析条码
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for (int i = 0; i < frameInfo.codeNum; i++)
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{
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EidCamera.EidCodeInfo codeInfo = (EidCamera.EidCodeInfo)Marshal.PtrToStructure(
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frameInfo.codeList + Marshal.SizeOf(typeof(EidCamera.EidCodeInfo)) * i,
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typeof(EidCamera.EidCodeInfo));
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string data = Marshal.PtrToStringAnsi(codeInfo.data);
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if (!string.IsNullOrEmpty(data))
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{
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BarcodeInfo info = new BarcodeInfo
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{
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Text = data,
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Points = new Point[]
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{
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new Point((int)codeInfo.position[0].x, (int)codeInfo.position[0].y),
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new Point((int)codeInfo.position[1].x, (int)codeInfo.position[1].y),
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new Point((int)codeInfo.position[2].x, (int)codeInfo.position[2].y),
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new Point((int)codeInfo.position[3].x, (int)codeInfo.position[3].y)
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}
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};
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barcodeInfos.Add(info);
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}
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}
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// 转换图像 (如果需要)
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// 转换图像
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Bitmap bitmap = null;
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if (frameInfo.imageDataLen > 0 && frameInfo.imageData != IntPtr.Zero)
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{
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// 这里简化处理，如果是Jpeg则直接从内存加载，如果是Raw则需转换
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// 实际项目中可根据 frameInfo.format 进行处理
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if (frameInfo.isJpeg)
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{
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byte[] managedArray = new byte[frameInfo.imageDataLen];
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Marshal.Copy(frameInfo.imageData, managedArray, 0, (int)frameInfo.imageDataLen);
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using (var ms = new System.IO.MemoryStream(managedArray))
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{
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bitmap = new Bitmap(ms);
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}
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}
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}
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// 触发事件
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OnBarcodeRead(new BarcodeEventArgs(this.SN, barcodeInfos, bitmap));
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}
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catch (Exception ex)
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{
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// TODO: Log error
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}
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}
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public override void Dispose()
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{
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Close();
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base.Dispose();
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}
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}
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}
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