iot/labs/CameraCardDemo/MainForm.cs

using CameraCardDemo.Infrastructure;
using OpenCvSharp;
using OpenCvSharp.Extensions;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace CameraCardDemo
{
    public partial class MainForm : Form
    {
        private CancellationTokenSource _cts = new CancellationTokenSource();
        private List<string> _cameras = new List<string>();
        private VideoCapture _videoCapture;
        private Rectangle _rect;
        private Pen _pen;
        private int _cvrStatus = 0;

        public MainForm()
        {
            InitializeComponent();
        }

        private void MainFrom_Load(object sender, EventArgs e)
        {
            foreach (Control item in this.idcGroupBox.Controls)
            {
                if (item is Label && item.Name.EndsWith("Value"))
                {
                    (item as Label).Text = "";
                }
            }
            this.CreateRect();
            Task.Run(async () =>
            {
                while (!this._cts.IsCancellationRequested)
                {
                    this.ScanCameras();
                    await Task.Delay(1000);
                }
            });
            Task.Run(async () =>
            {
                while (!this._cts.IsCancellationRequested)
                {
                    this.ScanCardReader();
                    await Task.Delay(1000);
                }
            });
            Task.Run(() =>
            {
                while (!this._cts.IsCancellationRequested)
                {
                    try
                    {
                        if (this._cvrStatus == 1 && CVRSDK.CVR_Authenticate() == 1 && CVRSDK.CVR_Read_FPContent() == 1)
                        {
                            var nameBytes = new byte[128];
                            var length = 128;
                            CVRSDK.GetPeopleName(ref nameBytes[0], ref length);
                            var name = System.Text.Encoding.GetEncoding("GB2312").GetString(nameBytes);
                            this.Invoke(new Action(() =>
                            {
                                this.FillData();
                                this.log.AppendText(name);
                                this.log.AppendText(Environment.NewLine);
                            }));
                        }
                    }
                    catch (Exception ex)
                    {
                        this.Invoke(new Action(() =>
                        {
                            this.log.AppendText(ex.Message);
                            this.log.AppendText(Environment.NewLine);
                        }));
                    }

                    Thread.Sleep(600);
                }
            });
        }

        private void CreateRect()
        {
            this._pen = new Pen(Color.Green);
            this._pen.DashStyle = DashStyle.Dash;
            var width = 351 / 2;
            var height = 448 / 2;
            this._rect = new Rectangle(this.cameraRender.Width / 2 - width / 2, this.cameraRender.Height / 2 - height / 2, 351 / 2, 448 / 2);
        }

        private void ScanCameras()
        {
            this.Invoke(new Action(() =>
            {
                var cameras = CameraHelper.GetDevices();
                if (!this._cameras.SequenceEqual(cameras))
                {
                    this._cameras = cameras;
                    this.cameraSelector.Items.Clear();
                    this.cameraSelector.Text = string.Empty;
                    foreach (var item in _cameras)
                    {
                        this.cameraSelector.Items.Add(item);
                    }
                    if (this.cameraSelector.Items.Count > 0)
                    {
                        this.cameraSelector.SelectedIndex = 0;
                    }
                    else
                    {
                        this.cameraSelector.Text = "没有检测到USB摄像头";
                    }
                }
            }));
        }

        private void ScanCardReader()
        {
            for (var usbPort = 1001; usbPort <= 1016; usbPort++)
            {
                this._cvrStatus = CVRSDK.CVR_InitComm(usbPort);
                if (this._cvrStatus == 1)
                {
                    break;
                }
            }
            if (this._cvrStatus != 1)
            {
                this.Invoke(new Action(() =>
                {
                    this.idcGroupBox.Text = $"身份证（设备未连接）";
                }));
            }
            else
            {
                this.Invoke(new Action(() =>
                {
                    this.idcGroupBox.Text = $"身份证（设备已连接）";
                }));
            }
        }

        public void FillData()
        {
            try
            {
                byte[] imgData = new byte[40960];
                int length = 40960;
                CVRSDK.GetBMPData(ref imgData[0], ref length);
                using (var myStream = new MemoryStream())
                {
                    for (int i = 0; i < length; i++)
                    {
                        myStream.WriteByte(imgData[i]);
                    }
                    Image myImage = Image.FromStream(myStream);
                    idcPicture.Image = myImage;
                }

                byte[] name = new byte[128];
                length = 128;
                CVRSDK.GetPeopleName(ref name[0], ref length);

                byte[] cnName = new byte[128];
                length = 128;
                CVRSDK.GetPeopleChineseName(ref cnName[0], ref length);

                byte[] number = new byte[128];
                length = 128;
                CVRSDK.GetPeopleIDCode(ref number[0], ref length);

                byte[] peopleNation = new byte[128];
                length = 128;
                CVRSDK.GetPeopleNation(ref peopleNation[0], ref length);

                byte[] peopleNationCode = new byte[128];
                length = 128;
                CVRSDK.GetNationCode(ref peopleNationCode[0], ref length);

                byte[] validtermOfStart = new byte[128];
                length = 128;
                CVRSDK.GetStartDate(ref validtermOfStart[0], ref length);

                byte[] birthday = new byte[128];
                length = 128;
                CVRSDK.GetPeopleBirthday(ref birthday[0], ref length);

                byte[] address = new byte[128];
                length = 128;
                CVRSDK.GetPeopleAddress(ref address[0], ref length);

                byte[] validtermOfEnd = new byte[128];
                length = 128;
                CVRSDK.GetEndDate(ref validtermOfEnd[0], ref length);

                byte[] signdate = new byte[128];
                length = 128;
                CVRSDK.GetDepartment(ref signdate[0], ref length);

                byte[] sex = new byte[128];
                length = 128;
                CVRSDK.GetPeopleSex(ref sex[0], ref length);

                byte[] samid = new byte[128];
                CVRSDK.CVR_GetSAMID(ref samid[0]);

                bool bCivic = true;
                byte[] certType = new byte[32];
                length = 32;
                CVRSDK.GetCertType(ref certType[0], ref length);

                string strType = System.Text.Encoding.ASCII.GetString(certType);
                int nStart = strType.IndexOf("I");
                if (nStart != -1) bCivic = false;
                var model = new IdcModel
                {
                    Type = bCivic ? "居民身份证" : "外国人永居证",
                    Name = GetString(name),
                    CnName = bCivic ? "" : GetString(name),
                    Sex = GetString(sex),
                    Nation = GetString(peopleNation),
                    NationCode = GetString(peopleNationCode),
                    Birthday = GetDataString(GetString(birthday)),
                    IdCardNo = GetString(number),
                    Address = bCivic ? GetString(address) : "",
                    Department = GetString(signdate),
                    ValidDateStart = GetString(validtermOfStart),
                    ValidDateEnd = GetString(validtermOfEnd),
                    SamID = GetString(samid),
                };
                //using (var ms = new MemoryStream())
                //{
                //    idcPicture.Image.Save(ms, ImageFormat.Bmp);
                //    model.Image = Convert.ToBase64String(ms.ToArray());
                //}
                if (bCivic)
                {
                    this.idcAddressLabel.Visible = true;
                    this.idcAddressValue.Visible = true;
                    this.idcCnNameLabel.Visible = false;
                    this.idcCnNameValue.Visible = false;
                    this.idcAddressLabel.Visible = true;
                    this.idcAddressValue.Visible = true;
                    this.idcAddressValue.Text = model.Address;
                    this.idcNameLable.Text = "民族：";
                    this.idcNationCodeLabel.Text = "民族代码：";
                    this.idcIdCardNoLabel.Text = "身份证号";
                }
                else
                {
                    this.idcAddressLabel.Visible = false;
                    this.idcAddressValue.Visible = false;
                    this.idcCnNameLabel.Visible = true;
                    this.idcCnNameValue.Visible = true;
                    this.idcAddressLabel.Visible = false;
                    this.idcAddressValue.Visible = false;
                    this.idcCnNameValue.Text = model.CnName;
                    this.idcNameLable.Text = "国籍：";
                    this.idcNationCodeLabel.Text = "国籍代码：";
                    this.idcIdCardNoLabel.Text = "证件号码";
                }
                this.idcNameValue.Text = model.Name;
                this.idcSexValue.Text = model.Sex;
                this.idcNationValue.Text = model.Nation;
                this.idcNationCodeValue.Text = model.NationCode;
                this.idcBirthdayValue.Text = model.Birthday;
                this.idcIdCardNoValue.Text = model.IdCardNo;
                this.idcDepartmentValue.Text = model.Department;
                this.idcValidDateValue.Text = $"{ GetDataString(model.ValidDateStart, '.')}-{GetDataString(model.ValidDateEnd, '.')}";
                this.idcSamIDValue.Text = model.SamID;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }

        private string GetString(byte[] data)
        {
            return Encoding.GetEncoding("GB2312").GetString(data).Replace("\0", "").Trim();
        }

        private string GetDataString(string value, char sep = '-')
        {
            return DateTime.ParseExact(value, "yyyyMMdd", CultureInfo.InvariantCulture).ToString($"yyyy{sep}MM{sep}dd");
        }

        private void cameraSelector_SelectedIndexChanged(object sender, EventArgs e)
        {
            Release();
            this._videoCapture = new VideoCapture((sender as ComboBox).SelectedIndex);
            if (this._videoCapture.IsOpened())
            {
                Task.Run(() =>
                {
                    while (this._videoCapture.IsOpened())
                    {
                        try
                        {
                            using (var mat = new Mat())
                            {
                                this._videoCapture.Read(mat);
                                this.cameraRender.Image = mat.ToBitmap();
                            }
                        }
                        catch
                        {
                            this._videoCapture.Release();
                            break;
                        }
                    }
                });
            }
        }

        private void shotBtn_Click(object sender, EventArgs e)
        {
            var bitmap = this.ClipImage();
            bitmap = this.ResizeImage(bitmap);
            pictureBox1.Image = bitmap;
            var eps = new EncoderParameters(1);
            eps.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 70L);
            bitmap.Save("temp.jpeg", ImageFormat.Jpeg);
        }

        private Bitmap ClipImage()
        {
            var image = this.cameraRender.Image;
            var width = this._rect.Width * image.Width / this.cameraRender.Width;
            var height = this._rect.Height * width / this._rect.Width;
            var bitmap = new Bitmap(width, height, PixelFormat.Format24bppRgb);
            bitmap.SetResolution(350, 350);
            using (var g = Graphics.FromImage(bitmap))
            {
                g.InterpolationMode = InterpolationMode.HighQualityBicubic;
                g.DrawImage(image, new Rectangle(0, 0, bitmap.Width, bitmap.Height), new Rectangle((image.Width - bitmap.Width) / 2, (image.Height - bitmap.Height) / 2, bitmap.Width, bitmap.Height), GraphicsUnit.Pixel);
            }
            return bitmap;
        }

        private Bitmap ResizeImage(Bitmap image)
        {
            var width = 358;
            var height = 441;
            var bitmap = new Bitmap(width, height, PixelFormat.Format24bppRgb);
            bitmap.SetResolution(350, 350);
            using (var g = Graphics.FromImage(bitmap))
            {
                g.InterpolationMode = InterpolationMode.HighQualityBicubic;
                g.DrawImage(image, new Rectangle(0, 0, bitmap.Width, bitmap.Height), new Rectangle(0, 0, image.Width, image.Height), GraphicsUnit.Pixel);
            }
            return bitmap;
        }

        private void cameraRender_Paint(object sender, PaintEventArgs e)
        {
            e.Graphics.DrawRectangle(this._pen, _rect);
        }

        private void Release()
        {
            if (this._videoCapture != null && _videoCapture.IsOpened())
            {
                this._videoCapture.Release();
            }
        }

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            this._cts.Cancel();
            Release();
            this._pen.Dispose();
            CVRSDK.CVR_CloseComm();
        }

        private void tabControl2_DrawItem(object sender, DrawItemEventArgs e)
        {
        }
    }
}