C#海康威视摄像头控制，将IntPtr转换成Bitmap图片

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已于 2022-11-07 15:23:01 修改 · 6.3k 阅读

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#c# #.net #ui

于 2022-11-07 14:59:18 首次发布

本文介绍了一个使用 C# 实现的相机控制类，该类能够完成相机设备的搜索、打开、启动采集、保存图像等功能，并提供了详细的代码实现。

using DVPCameraType;
using MvCamCtrl.NET;
using OpenCvSharp;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace zqt_Control
{
    public class Camera_csb
    {
        #region 摄像头
        List<string> lsca = new List<string>();
        [DllImport("kernel32.dll", EntryPoint = "CopyMemory", SetLastError = false)]
        public static extern void CopyMemory(IntPtr dest, IntPtr src, uint count);

        MyCamera.MV_CC_DEVICE_INFO_LIST m_stDeviceList = new MyCamera.MV_CC_DEVICE_INFO_LIST();
        private MyCamera m_MyCamera = new MyCamera();
        bool m_bGrabbing = false;
        Thread m_hReceiveThread = null;
        MyCamera.MV_FRAME_OUT_INFO_EX m_stFrameInfo = new MyCamera.MV_FRAME_OUT_INFO_EX();

        // ch:用于从驱动获取图像的缓存 | en:Buffer for getting image from driver
        UInt32 m_nBufSizeForDriver = 0;
        IntPtr m_BufForDriver = IntPtr.Zero;
        private static Object BufForDriverLock = new Object();
        MyCamera.MV_FRAME_OUT stFrameInfo = new MyCamera.MV_FRAME_OUT();

private static Camera_csb controller = null;

        public static Camera_csb GetController()
        {
            if (controller == null)
            {
                controller = new Camera_csb();
            }
            return controller;
        }

        public void InitCamrea()
        {
            DeviceListAcq();
            Open();
            StartGrab();
            SetParam("280000");
            //bnSaveJpg_Click();
        }

        /// <summary>
        /// 搜索所有相机
        /// </summary>
        public void DeviceListAcq()
        {
            // ch:创建设备列表 | en:Create Device List
            System.GC.Collect();
            //cbDeviceList.Items.Clear();
            m_stDeviceList.nDeviceNum = 0;
            int nRet = MyCamera.MV_CC_EnumDevices_NET(MyCamera.MV_GIGE_DEVICE | MyCamera.MV_USB_DEVICE, ref m_stDeviceList);
            if (0 != nRet)
            {
                //MessageBox.Show("Enumerate devices fail!");
                return;
            }

            // ch:在窗体列表中显示设备名 | en:Display device name in the form list
            for (int i = 0; i < m_stDeviceList.nDeviceNum; i++)
            {
                MyCamera.MV_CC_DEVICE_INFO device = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[i], typeof(MyCamera.MV_CC_DEVICE_INFO));
                if (device.nTLayerType == MyCamera.MV_GIGE_DEVICE)
                {
                    MyCamera.MV_GIGE_DEVICE_INFO gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO)MyCamera.ByteToStruct(device.SpecialInfo.stGigEInfo, typeof(MyCamera.MV_GIGE_DEVICE_INFO));

                    if (gigeInfo.chUserDefinedName != "")
                    {
                        //cbDeviceList.Items.Add("GEV: " + gigeInfo.chUserDefinedName + " (" + gigeInfo.chSerialNumber + ")");
                        lsca.Add("GEV: " + gigeInfo.chUserDefinedName + " (" + gigeInfo.chSerialNumber + ")");
                    }
                    else
                    {
                        lsca.Add("GEV: " + gigeInfo.chManufacturerName + " " + gigeInfo.chModelName + " (" + gigeInfo.chSerialNumber + ")");
                    }
                }
                else if (device.nTLayerType == MyCamera.MV_USB_DEVICE)
                {
                    //MyCamera.MV_USB3_DEVICE_INFO usbInfo = (MyCamera.MV_USB3_DEVICE_INFO)MyCamera.ByteToStruct(device.SpecialInfo.stUsb3VInfo, typeof(MyCamera.MV_USB3_DEVICE_INFO));
                    //if (usbInfo.chUserDefinedName != "")
                    //{
                    //    lsca.Add("U3V: " + usbInfo.chUserDefinedName + " (" + usbInfo.chSerialNumber + ")");
                    //}
                    //else
                    //{
                    //    lsca.Add("U3V: " + usbInfo.chManufacturerName + " " + usbInfo.chModelName + " (" + usbInfo.chSerialNumber + ")");