Aucma.Scada/Aucma.Scada.HikRobot/MvCodeHelper.cs

using MvCodeReaderSDKNet;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using static System.Runtime.CompilerServices.RuntimeHelpers;
using HighWayIot.Log4net;
using HighWayIot.Config;
using System.Security.Policy;
namespace Aucma.Core.Scanner
{
    public class MvCodeHelper
    {
        private static AppConfig appConfig = AppConfig.Instance;
        public static bool m_bGrabbing = true;
        private static string lastCode;
        #region 委托事件
        public delegate void RefreshMaterialCodeStr(string materialCodeStr, string ip);
        public static event RefreshMaterialCodeStr RefreshMaterialCodeStrEvent;
        /// <summary>
        /// 日志信息刷新
        /// </summary>
        /// <param name="message"></param>
        public delegate void RefreshLogMessage(string message);
        public static event RefreshLogMessage RefreshLogMessageEvent;
        #endregion

        // 获取到的所有设备
        public static MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST m_stDeviceList = new MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST();

        // (成功创建)连接上的设备和其ip(string)集合
        public static Dictionary<MvCodeReader, string> m_cMyDevices = new Dictionary<MvCodeReader, string>();

        #region 设备连接状态
        /// <summary>
        /// 获取不到任务设备即连接失败
        /// </summary>
        /// <returns></returns>
        public  static bool ConnectionStatus(string ip)
        {
            // 遍历所有已打开相机
            foreach (KeyValuePair<MvCodeReader, string> hashmap in m_cMyDevices)
            {
                if (ip.Equals(hashmap.Value))
                {
                    return true;
                }
            }
            // 没有连接上，重新获取并创建设备
            Task.Run(() =>
            {
                DeviceListAcq();
            });
            return false;
        }
        #endregion

        #region 获取并创建设备列表
        /// <summary>
        /// 获取并创建设备列表
        /// </summary>
        public static void DeviceListAcq()
        {
            try
            {
                RefreshLogMessageEvent?.Invoke("获取扫码器设备列表,进入DeviceListAcq()方法");

                // 内胆扫码器ip
                string LinerScannerIp = appConfig.linerHikRobotIp;
                // 箱壳扫码器ip
                string ShellScannerIp = appConfig.shellHikRobotIp;

                System.GC.Collect();
                m_stDeviceList.nDeviceNum = 0;
                // 获取设备列表
                int nRet = MvCodeReader.MV_CODEREADER_EnumDevices_NET(ref m_stDeviceList, MvCodeReader.MV_CODEREADER_GIGE_DEVICE);
                if (0 != nRet)
                {
                    RefreshLogMessageEvent?.Invoke("获取扫码器列表失败,扫码器错误码:" + nRet);
                    return;
                }

                if (0 == m_stDeviceList.nDeviceNum)
                {
                    RefreshLogMessageEvent?.Invoke("获取扫码器数量为0，请检查扫码器连接:");
                    return;
                }

                MvCodeReader m_cMyDevice = new MvCodeReader();

                //创建所有设备
                for (int i = 0; i < m_stDeviceList.nDeviceNum; i++)
                {
                    MvCodeReader.MV_CODEREADER_DEVICE_INFO stDevInfo = (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[i], typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));
                    if (stDevInfo.nTLayerType == MvCodeReader.MV_CODEREADER_GIGE_DEVICE)
                    {
                        IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(stDevInfo.SpecialInfo.stGigEInfo, 0);
                        MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO stGigEDeviceInfo = (MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO));

                        // 获取ip
                        string ip = ((stGigEDeviceInfo.nCurrentIp & 0xff000000) >> 24) + "." + ((stGigEDeviceInfo.nCurrentIp & 0x00ff0000) >> 16) + "." + ((stGigEDeviceInfo.nCurrentIp & 0x0000ff00) >> 8) + "." + (stGigEDeviceInfo.nCurrentIp & 0x000000ff);
                        // 只连接配置的扫码器
                        if (!ip.Equals(LinerScannerIp) && !ip.Equals(ShellScannerIp)) continue;

                        Console.Write("扫码器设备[" + i + "],ip:" + ip);
                        // 创建第i个设备
                        stDevInfo = (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[i], typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));
                        nRet = m_cMyDevice.MV_CODEREADER_CreateHandle_NET(ref stDevInfo);//创建设备
                        if (MvCodeReader.MV_CODEREADER_OK != nRet)
                        {
                            Console.WriteLine("创建第" + i + "个扫码器设备失败,ip:" + ip);
                            return;
                        } 
                        // 打开设备
                        nRet = m_cMyDevice.MV_CODEREADER_OpenDevice_NET();
                        if (MvCodeReader.MV_CODEREADER_OK != nRet)
                        {
                            m_cMyDevice.MV_CODEREADER_DestroyHandle_NET();
                            Console.WriteLine("Device open fail!");
                            return;
                        }
                        RefreshLogMessageEvent?.Invoke("创建并打开第" + i + "个扫码器设备成功,ip:" + ip);
                        //设置触发模式
                        nRet = m_cMyDevice.MV_CODEREADER_SetEnumValue_NET("TriggerMode", (uint)MvCodeReader.MV_CODEREADER_TRIGGER_MODE.MV_CODEREADER_TRIGGER_MODE_ON);
                        if (MvCodeReader.MV_CODEREADER_OK != nRet)
                        {
                            Console.WriteLine("设置触发模式失败");
                            return;
                        }
                        //添加到集合
                        m_cMyDevices.Add(m_cMyDevice, ip);
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("获取和创建设备异常:" + ex);
            }
        }
        #endregion

     
        #region  光电触发扫码器接收条码处理业务
        public static void StartGrab()
        {
            try
            {
                int nRet = MvCodeReader.MV_CODEREADER_OK;
                // 3.开启抓图
                int nCount = 0;
                IntPtr pData = IntPtr.Zero;
                MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2 stFrameInfoEx2 = new MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2();
                IntPtr pstFrameInfoEx2 = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2)));
                Marshal.StructureToPtr(stFrameInfoEx2, pstFrameInfoEx2, false);

                foreach (KeyValuePair<MvCodeReader, string> hashmap in m_cMyDevices)
                {
                    nRet = hashmap.Key.MV_CODEREADER_StartGrabbing_NET();
                    while (m_bGrabbing)
                    {
                        // 光电触发了有图像
                        nRet = hashmap.Key.MV_CODEREADER_GetOneFrameTimeoutEx2_NET(ref pData, pstFrameInfoEx2, 1000);
                        // ch:获取一帧图像 | en:Get one image
                        if (MvCodeReader.MV_CODEREADER_OK == nRet)
                        {
                            stFrameInfoEx2 = (MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2)Marshal.PtrToStructure(pstFrameInfoEx2, typeof(MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2));
                            // 分配条码内存空间
                            MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2 stBcrResult = (MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2)Marshal.PtrToStructure(stFrameInfoEx2.UnparsedBcrList.pstCodeListEx2, typeof(MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2));
                            for (int i = 0; i < stBcrResult.nCodeNum; ++i)
                            {
                                bool bIsValidUTF8 = IsTextUTF8(stBcrResult.stBcrInfoEx2[i].chCode);
                                if (bIsValidUTF8)
                                {
                                    // string strCode = System.Text.Encoding.Default.GetString(stBcrResult.stBcrInfoEx2[i].chCode);
                                    string strCode = Encoding.UTF8.GetString(stBcrResult.stBcrInfoEx2[i].chCode);
                                   // logHelper.Info("bIsValidUTF8:: Get CodeNum: " + "CodeNum[" + i.ToString() + "], CodeString[" + strCode.Trim().TrimEnd('\0') + "]");
                                }
                                else
                                {
                                    byte[] buffer = new byte[22];
                                    if (stBcrResult.stBcrInfoEx2[i].chCode.Length > 0)
                                    {
                                        Array.Copy(stBcrResult.stBcrInfoEx2[i].chCode, buffer, 22);
                                    }
                                    string strCode = Encoding.GetEncoding("UTF-8").GetString(buffer).Trim().TrimEnd('\0');
                                    RefreshLogMessageEvent?.Invoke("相机ip:" + hashmap.Value + "   Get CodeNum: " + "CodeNum[" + i.ToString() + "], CodeString[" + strCode + "]");
                                    if (!string.IsNullOrEmpty(strCode) && lastCode!=strCode)
                                    {
                                        
                                       RefreshMaterialCodeStrEvent?.Invoke(strCode,hashmap.Value);
                                       lastCode = strCode;
                                        
                                    }
                                }
                            }
                        }
                        Thread.Sleep(500);

                    }

                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("扫码异常:" + ex);
            }
        }
        #endregion


        #region 关闭所有设备
        public static void CloseAllDevice()
        {
            try
            {
                Console.WriteLine("开始关闭所有设备");
                int nRet = MvCodeReader.MV_CODEREADER_OK;
                // 关闭所有已打开相机
                foreach (KeyValuePair<MvCodeReader, string> hashmap in m_cMyDevices)
                {
                    // ch:停止抓图 | en:Stop grab image
                    nRet = hashmap.Key.MV_CODEREADER_StopGrabbing_NET();
                    if (MvCodeReader.MV_CODEREADER_OK != nRet)
                    {
                        Console.WriteLine("设备ip:" + hashmap.Value + "停止抓图失败");
                        Console.WriteLine("Stop grabbing failed{0:x8}", nRet);
                    }
                    // ch:关闭设备 | en:Close device
                    nRet = hashmap.Key.MV_CODEREADER_CloseDevice_NET();
                    if (MvCodeReader.MV_CODEREADER_OK != nRet)
                    {
                        Console.WriteLine("设备ip:" + hashmap.Value + "关闭失败");

                    }

                    // ch:销毁设备 | en:Destroy device
                    nRet = hashmap.Key.MV_CODEREADER_DestroyHandle_NET();
                    if (MvCodeReader.MV_CODEREADER_OK != nRet)
                    {
                        Console.WriteLine("设备ip:" + hashmap.Value + "销毁失败");
                    }
                    Console.WriteLine("设备ip:" + hashmap.Value + "关闭成功！");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("设备关闭异常:" + ex);
            }


        }
        #endregion

        #region 关闭指定设备
        public  void CloseDevice(KeyValuePair<MvCodeReader, string> hashmap)
        {
            try
            {
                int nRet = MvCodeReader.MV_CODEREADER_OK;
                // ch:停止抓图 | en:Stop grab image
                nRet = hashmap.Key.MV_CODEREADER_StopGrabbing_NET();
                if (MvCodeReader.MV_CODEREADER_OK != nRet)
                {
                    Console.WriteLine("设备ip:" + hashmap.Value + "停止抓图失败");
                    Console.WriteLine("Stop grabbing failed{0:x8}", nRet);
                    return;
                }
                // ch:关闭设备 | en:Close device
                nRet = hashmap.Key.MV_CODEREADER_CloseDevice_NET();
                if (MvCodeReader.MV_CODEREADER_OK != nRet)
                {
                    Console.WriteLine("设备ip:" + hashmap.Value + "关闭失败");
                    return;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("设备关闭异常:" + ex);
            }
        }
        #endregion


        #region 判断字符编码
        /// <summary>
        /// 判断字符编码
        /// </summary>
        /// <param name="inputStream"></param>
        /// <returns></returns>
        public static bool IsTextUTF8(byte[] inputStream)
        {
            int encodingBytesCount = 0;
            bool allTextsAreASCIIChars = true;

            for (int i = 0; i < inputStream.Length; i++)
            {
                byte current = inputStream[i];

                if ((current & 0x80) == 0x80)
                {
                    allTextsAreASCIIChars = false;
                }
                // First byte
                if (encodingBytesCount == 0)
                {
                    if ((current & 0x80) == 0)
                    {
                        // ASCII chars, from 0x00-0x7F
                        continue;
                    }

                    if ((current & 0xC0) == 0xC0)
                    {
                        encodingBytesCount = 1;
                        current <<= 2;

                        // More than two bytes used to encoding a unicode char.
                        // Calculate the real length.
                        while ((current & 0x80) == 0x80)
                        {
                            current <<= 1;
                            encodingBytesCount++;
                        }
                    }
                    else
                    {
                        // Invalid bits structure for UTF8 encoding rule.
                        return false;
                    }
                }
                else
                {
                    // Following bytes, must start with 10.
                    if ((current & 0xC0) == 0x80)
                    {
                        encodingBytesCount--;
                    }
                    else
                    {
                        // Invalid bits structure for UTF8 encoding rule.
                        return false;
                    }
                }
            }
            if (encodingBytesCount != 0)
            {
                // Invalid bits structure for UTF8 encoding rule.
                // Wrong following bytes count.
                return false;
            }
            // Although UTF8 supports encoding for ASCII chars, we regard as a input stream, whose contents are all ASCII as default encoding.
            return !allTextsAreASCIIChars;
        }

        #endregion

        #region 将Byte转换为结构体类型
        //将Byte转换为结构体类型
        public static object ByteToStruct(byte[] bytes, Type type)
        {
            int size = Marshal.SizeOf(type);
            if (size > bytes.Length)
            {
                return null;
            }
            //分配结构体内存空间
            IntPtr structPtr = Marshal.AllocHGlobal(size);
            //将byte数组拷贝到分配好的内存空间
            Marshal.Copy(bytes, 0, structPtr, size);
            //将内存空间转换为目标结构体
            object obj = Marshal.PtrToStructure(structPtr, type);
            //释放内存空间
            Marshal.FreeHGlobal(structPtr);
            return obj;
        }
        #endregion



    }
}