505 lines
20 KiB
C#
505 lines
20 KiB
C#
using MvCamCtrl.NET;
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using Sunny.UI;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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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 System.Threading;
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using System.Threading.Tasks;
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namespace Check.Main.Camera
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{
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public class HikvisionCamera : IDisposable
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{
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[DllImport("kernel32.dll", EntryPoint = "RtlMoveMemory", SetLastError = false)]
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private static extern void CopyMemory(IntPtr dest, IntPtr src, uint count);
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// 事件委托
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public delegate void ImageAcquiredEventHandler(HikvisionCamera sender, Bitmap bmp);
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// public delegate void ImageAcquiredEventHandler(object sender, Bitmap bmp);
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public delegate void CameraMessageEventHandler(object sender, string message, int errorCode = 0);
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// 事件
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public event ImageAcquiredEventHandler ImageAcquired;
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public event CameraMessageEventHandler CameraMessage;
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// 私有成员变量
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private MyCamera m_MyCamera;
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private MyCamera.MV_CC_DEVICE_INFO_LIST m_stDeviceList;
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private bool m_bGrabbing = false;
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private Thread m_hReceiveThread = null;
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private Bitmap m_bitmap = null;
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private IntPtr m_ConvertDstBuf = IntPtr.Zero;
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private uint m_nConvertDstBufLen = 0;
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public string Name { get; set; }
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/// <summary>
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/// 由外部逻辑分配的、唯一的相机软件编号。
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/// 主要用作图像路由和与逻辑处理器匹配的键。
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/// </summary>
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public int CameraIndex { get; set; }
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/// <summary>
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/// 相机是否已经打开
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/// </summary>
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public bool IsOpen { get; private set; } = false;
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public TriggerModeType TriggerMode { get; internal set; } // internal set 保证只有 CameraManager 能设置它
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/// <summary>
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/// 相机是否正在采集
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/// </summary>
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public bool IsGrabbing => m_bGrabbing;
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public HikvisionCamera()
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{
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// 初始化SDK
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MyCamera.MV_CC_Initialize_NET();
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}
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/// <summary>
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/// 查找所有可用的相机设备
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/// </summary>
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/// <returns>设备名称列表</returns>
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public List<string> FindDevices()
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{
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var deviceList = new List<string>();
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m_stDeviceList = new MyCamera.MV_CC_DEVICE_INFO_LIST();
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int nRet = MyCamera.MV_CC_EnumDevices_NET(MyCamera.MV_GIGE_DEVICE | MyCamera.MV_USB_DEVICE, ref m_stDeviceList);
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if (nRet != MyCamera.MV_OK)
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{
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OnCameraMessage("设备枚举失败!", nRet);
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return deviceList;
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}
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for (int i = 0; i < m_stDeviceList.nDeviceNum; i++)
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{
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var device = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[i], typeof(MyCamera.MV_CC_DEVICE_INFO));
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if (device.nTLayerType == MyCamera.MV_GIGE_DEVICE)
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{
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var gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO_EX)MyCamera.ByteToStruct(device.SpecialInfo.stGigEInfo, typeof(MyCamera.MV_GIGE_DEVICE_INFO_EX));
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if (!string.IsNullOrEmpty(Encoding.Default.GetString(gigeInfo.chUserDefinedName).TrimEnd('\0')))
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deviceList.Add("GEV: " + gigeInfo.chUserDefinedName + " (" + gigeInfo.chSerialNumber + ")");
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else
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deviceList.Add("GEV: " + gigeInfo.chManufacturerName + " " + gigeInfo.chModelName + " (" + gigeInfo.chSerialNumber + ")");
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}
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else if (device.nTLayerType == MyCamera.MV_USB_DEVICE)
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{
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var usbInfo = (MyCamera.MV_USB3_DEVICE_INFO_EX)MyCamera.ByteToStruct(device.SpecialInfo.stUsb3VInfo, typeof(MyCamera.MV_USB3_DEVICE_INFO_EX));
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if (!string.IsNullOrEmpty(Encoding.Default.GetString(usbInfo.chUserDefinedName).TrimEnd('\0')))
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deviceList.Add("U3V: " + usbInfo.chUserDefinedName + " (" + usbInfo.chSerialNumber + ")");
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else
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deviceList.Add("U3V: " + usbInfo.chManufacturerName + " " + usbInfo.chModelName + " (" + usbInfo.chSerialNumber + ")");
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}
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}
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return deviceList;
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}
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/// <summary>
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/// 根据索引打开相机
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/// </summary>
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/// <param name="index">设备索引</param>
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/// <returns>成功返回true，否则返回false</returns>
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public bool Open(CameraSettings camConfig)
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{
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string ipCam = "";
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string ipDevice = "";
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FindDevices();
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if (camConfig.IsEnabled == true)
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{
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ipCam = camConfig.IPAddress;
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ipDevice = camConfig.IPDeviceAddress;
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}
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try
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{
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if (m_stDeviceList.nDeviceNum == 0 || string.IsNullOrEmpty(camConfig.IPAddress))
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{
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OnCameraMessage("没有找到设备或索引无效。", -1);
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return false;
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}
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if (IsOpen)
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{
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OnCameraMessage("相机已经打开。", 0);
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return true;
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}
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MyCamera.MV_CC_DEVICE_INFO device = new MyCamera.MV_CC_DEVICE_INFO();
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device.nTLayerType = MyCamera.MV_GIGE_DEVICE;
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MyCamera.MV_GIGE_DEVICE_INFO stGigEDev = new MyCamera.MV_GIGE_DEVICE_INFO();
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var parts = ipCam.Split('.');
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int nIp1 = Convert.ToInt32(parts[0]);
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int nIp2 = Convert.ToInt32(parts[1]);
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int nIp3 = Convert.ToInt32(parts[2]);
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int nIp4 = Convert.ToInt32(parts[3]);
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stGigEDev.nCurrentIp = (uint)((nIp1 << 24) | (nIp2 << 16) | (nIp3 << 8) | nIp4);
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parts = ipDevice.Split('.');
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nIp1 = Convert.ToInt32(parts[0]);
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nIp2 = Convert.ToInt32(parts[1]);
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nIp3 = Convert.ToInt32(parts[2]);
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nIp4 = Convert.ToInt32(parts[3]);
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stGigEDev.nNetExport = (uint)((nIp1 << 24) | (nIp2 << 16) | (nIp3 << 8) | nIp4);
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IntPtr stGigeInfoPtr = Marshal.AllocHGlobal(216);
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Marshal.StructureToPtr(stGigEDev, stGigeInfoPtr, false);
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device.SpecialInfo.stGigEInfo = new Byte[540];
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Marshal.Copy(stGigeInfoPtr, device.SpecialInfo.stGigEInfo, 0, 540);
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//释放内存空间
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Marshal.FreeHGlobal(stGigeInfoPtr);
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//var device = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[index], typeof(MyCamera.MV_CC_DEVICE_INFO));
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m_MyCamera = new MyCamera();
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int nRet = m_MyCamera.MV_CC_CreateDevice_NET(ref device);
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if (nRet != MyCamera.MV_OK)
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{
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OnCameraMessage("创建设备句柄失败!", nRet);
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return false;
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}
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nRet = m_MyCamera.MV_CC_OpenDevice_NET();
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if (nRet != MyCamera.MV_OK)
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{
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OnCameraMessage("打开设备失败!", nRet);
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m_MyCamera.MV_CC_DestroyDevice_NET();
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return false;
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}
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// 探测网络最佳包大小(只对GigE相机有效)
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if (device.nTLayerType == MyCamera.MV_GIGE_DEVICE)
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{
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int nPacketSize = m_MyCamera.MV_CC_GetOptimalPacketSize_NET();
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if (nPacketSize > 0)
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{
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m_MyCamera.MV_CC_SetIntValueEx_NET("GevSCPSPacketSize", nPacketSize);
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}
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}
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// 默认设置为连续模式
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//SetContinuousMode();
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// 设置为硬触发模式（Line0）
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SetTriggerMode(false);
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IsOpen = true;
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OnCameraMessage("相机打开成功。", 0);
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return true;
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}
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catch (Exception ex)
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{
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OnCameraMessage("相机打开失败。"+ ex.ToString(), 0);
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return false;
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}
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}
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/// <summary>
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/// 关闭相机
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/// </summary>
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public void Close()
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{
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if (!IsOpen) return;
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if (m_bGrabbing)
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{
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StopGrabbing();
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}
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m_MyCamera.MV_CC_CloseDevice_NET();
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m_MyCamera.MV_CC_DestroyDevice_NET();
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IsOpen = false;
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m_MyCamera = null;
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OnCameraMessage("相机已关闭。", 0);
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}
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/// <summary>
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/// 开始采集图像
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/// </summary>
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/// <returns>成功返回true</returns>
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public bool StartGrabbing()
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{
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if (!IsOpen || m_bGrabbing)
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{
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OnCameraMessage(m_bGrabbing ? "已经在采集中。" : "相机未打开。", -1);
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return false;
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}
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// 取图前的必要操作
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if (NecessaryOperBeforeGrab() != MyCamera.MV_OK)
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{
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return false;
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}
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int nRet = m_MyCamera.MV_CC_StartGrabbing_NET();
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if (nRet != MyCamera.MV_OK)
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{
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OnCameraMessage("开始采集失败!", nRet);
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return false;
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}
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m_bGrabbing = true;
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m_hReceiveThread = new Thread(ReceiveThreadProcess);
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m_hReceiveThread.IsBackground = true;
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m_hReceiveThread.Start();
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OnCameraMessage("开始采集。", 0);
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return true;
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}
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/// <summary>
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/// 停止采集图像
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/// </summary>
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public void StopGrabbing()
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{
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if (!m_bGrabbing) return;
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m_bGrabbing = false;
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if (m_hReceiveThread != null && m_hReceiveThread.IsAlive)
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{
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m_hReceiveThread.Join(1000); // 等待线程退出
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}
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int nRet = m_MyCamera.MV_CC_StopGrabbing_NET();
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if (nRet != MyCamera.MV_OK)
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{
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OnCameraMessage("停止采集失败!", nRet);
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}
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OnCameraMessage("停止采集。", 0);
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}
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/// <summary>
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/// 设置为连续采集模式
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/// </summary>
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public void SetContinuousMode()
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{
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if (!IsOpen) return;
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m_MyCamera.MV_CC_SetEnumValue_NET("AcquisitionMode", (uint)MyCamera.MV_CAM_ACQUISITION_MODE.MV_ACQ_MODE_CONTINUOUS);
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m_MyCamera.MV_CC_SetEnumValue_NET("TriggerMode", (uint)MyCamera.MV_CAM_TRIGGER_MODE.MV_TRIGGER_MODE_OFF);
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OnCameraMessage("已设置为连续模式。", 0);
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}
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/// <summary>
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/// 设置为触发模式
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/// </summary>
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/// <param name="isSoftwareTrigger">true为软触发, false为硬触发(Line0)</param>
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public void SetTriggerMode(bool isSoftwareTrigger)
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{
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if (!IsOpen) return;
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m_MyCamera.MV_CC_SetEnumValue_NET("AcquisitionMode", (uint)MyCamera.MV_CAM_ACQUISITION_MODE.MV_ACQ_MODE_CONTINUOUS); // 触发模式也需要在Continuous模式下
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m_MyCamera.MV_CC_SetEnumValue_NET("TriggerMode", (uint)MyCamera.MV_CAM_TRIGGER_MODE.MV_TRIGGER_MODE_ON);
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if (isSoftwareTrigger)
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{
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m_MyCamera.MV_CC_SetEnumValue_NET("TriggerSource", (uint)MyCamera.MV_CAM_TRIGGER_SOURCE.MV_TRIGGER_SOURCE_SOFTWARE);
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OnCameraMessage("已设置为软触发模式。", 0);
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}
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else
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{
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m_MyCamera.MV_CC_SetEnumValue_NET("TriggerSource", (uint)MyCamera.MV_CAM_TRIGGER_SOURCE.MV_TRIGGER_SOURCE_LINE0);
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OnCameraMessage("已设置为硬触发(Line0)模式。", 0);
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}
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}
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/// <summary>
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/// 执行一次软触发
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/// </summary>
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/// <returns>成功返回true</returns>
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public bool SoftwareTrigger()
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{
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if (!IsOpen || !m_bGrabbing)
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{
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OnCameraMessage("请先打开相机并开始采集。", -1);
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return false;
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}
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int nRet = m_MyCamera.MV_CC_SetCommandValue_NET("TriggerSoftware");
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if (nRet != MyCamera.MV_OK)
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{
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OnCameraMessage("软触发失败!", nRet);
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return false;
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}
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return true;
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}
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/// <summary>
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/// 图像接收线程
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/// </summary>
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private void ReceiveThreadProcess()
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{
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MyCamera.MV_FRAME_OUT stFrameInfo = new MyCamera.MV_FRAME_OUT();
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var stConvertParam = new MyCamera.MV_PIXEL_CONVERT_PARAM();
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while (m_bGrabbing)
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{
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int nRet = m_MyCamera.MV_CC_GetImageBuffer_NET(ref stFrameInfo, 1000);
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if (nRet == MyCamera.MV_OK)
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{
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Bitmap bmpForEvent = null; // 在 try 外部声明
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try
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{
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// 初始化转换参数
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stConvertParam.nWidth = stFrameInfo.stFrameInfo.nWidth;
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stConvertParam.nHeight = stFrameInfo.stFrameInfo.nHeight;
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stConvertParam.pSrcData = stFrameInfo.pBufAddr;
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stConvertParam.nSrcDataLen = stFrameInfo.stFrameInfo.nFrameLen;
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stConvertParam.enSrcPixelType = stFrameInfo.stFrameInfo.enPixelType;
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stConvertParam.pDstBuffer = m_ConvertDstBuf;
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stConvertParam.nDstBufferSize = m_nConvertDstBufLen;
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// 创建用于事件的Bitmap，它的格式与类成员m_bitmap一致
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bmpForEvent = new Bitmap((int)stConvertParam.nWidth, (int)stConvertParam.nHeight, m_bitmap.PixelFormat);
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// 判断并设置目标像素格式
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if (bmpForEvent.PixelFormat == PixelFormat.Format8bppIndexed)
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{
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stConvertParam.enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono8;
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}
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else
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{
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stConvertParam.enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_BGR8_Packed;
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}
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// 执行像素格式转换
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nRet = m_MyCamera.MV_CC_ConvertPixelType_NET(ref stConvertParam);
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if (nRet == MyCamera.MV_OK)
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{
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// 转换成功，锁定位图内存并拷贝数据
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BitmapData bmpData = bmpForEvent.LockBits(new Rectangle(0, 0, stConvertParam.nWidth, stConvertParam.nHeight), ImageLockMode.WriteOnly, bmpForEvent.PixelFormat);
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// 使用更健壮的逐行拷贝
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int pixelSize = (bmpForEvent.PixelFormat == PixelFormat.Format8bppIndexed) ? 1 : 3;
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for (int i = 0; i < bmpData.Height; ++i)
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{
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IntPtr pDst = new IntPtr(bmpData.Scan0.ToInt64() + i * bmpData.Stride);
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IntPtr pSrc = new IntPtr(m_ConvertDstBuf.ToInt64() + i * stConvertParam.nWidth * pixelSize);
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CopyMemory(pDst, pSrc, (uint)(stConvertParam.nWidth * pixelSize));
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}
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bmpForEvent.UnlockBits(bmpData);
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// 触发图像采集事件，转移 bmpForEvent 的所有权
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ImageAcquired?.Invoke(this, bmpForEvent);
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// 【关键】所有权已转移，将本地引用设为null，防止它在finally块中被错误地释放
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bmpForEvent = null;
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}
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// 如果转换失败，不执行任何操作，让 finally 块来处理 bmpForEvent 的释放
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}
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finally
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{
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// 【关键】如果 bmpForEvent 不为 null，意味着它被成功创建，
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// 但没有被成功传递给事件处理器（可能因为转换失败或发生其他异常），
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// 在这里必须将其释放。
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bmpForEvent?.Dispose();
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// 无论成功与否，都必须释放相机SDK的内部图像缓存
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m_MyCamera.MV_CC_FreeImageBuffer_NET(ref stFrameInfo);
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}
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}
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else
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{
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// 超时，继续等待
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Thread.Sleep(5);
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}
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}
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}
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/// <summary>
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/// 取图前的内存和参数准备
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/// </summary>
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private int NecessaryOperBeforeGrab()
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{
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var stWidth = new MyCamera.MVCC_INTVALUE_EX();
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int nRet = m_MyCamera.MV_CC_GetIntValueEx_NET("Width", ref stWidth);
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if (nRet != MyCamera.MV_OK) { OnCameraMessage("获取宽度失败!", nRet); return nRet; }
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var stHeight = new MyCamera.MVCC_INTVALUE_EX();
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nRet = m_MyCamera.MV_CC_GetIntValueEx_NET("Height", ref stHeight);
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if (nRet != MyCamera.MV_OK) { OnCameraMessage("获取高度失败!", nRet); return nRet; }
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var stPixelFormat = new MyCamera.MVCC_ENUMVALUE();
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nRet = m_MyCamera.MV_CC_GetEnumValue_NET("PixelFormat", ref stPixelFormat);
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if (nRet != MyCamera.MV_OK) { OnCameraMessage("获取像素格式失败!", nRet); return nRet; }
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PixelFormat bitmapPixelFormat;
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// 判断当前像素格式是否为Mono
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bool isMono = IsMono(stPixelFormat.nCurValue);
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if (isMono)
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{
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bitmapPixelFormat = PixelFormat.Format8bppIndexed;
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m_nConvertDstBufLen = (uint)(stWidth.nCurValue * stHeight.nCurValue);
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}
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else
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{
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bitmapPixelFormat = PixelFormat.Format24bppRgb;
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m_nConvertDstBufLen = (uint)(stWidth.nCurValue * stHeight.nCurValue * 3);
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}
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// 分配转换后的图像数据缓存
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if (m_ConvertDstBuf != IntPtr.Zero) Marshal.FreeHGlobal(m_ConvertDstBuf);
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m_ConvertDstBuf = Marshal.AllocHGlobal((int)m_nConvertDstBufLen);
|
||
|
||
// 创建Bitmap对象
|
||
if (m_bitmap != null) m_bitmap.Dispose();
|
||
m_bitmap = new Bitmap((int)stWidth.nCurValue, (int)stHeight.nCurValue, bitmapPixelFormat);
|
||
|
||
// 如果是Mono8格式，设置调色板
|
||
if (isMono)
|
||
{
|
||
ColorPalette palette = m_bitmap.Palette;
|
||
for (int i = 0; i < 256; i++) palette.Entries[i] = Color.FromArgb(i, i, i);
|
||
m_bitmap.Palette = palette;
|
||
}
|
||
|
||
return MyCamera.MV_OK;
|
||
}
|
||
|
||
private bool IsMono(uint enPixelType)
|
||
{
|
||
switch (enPixelType)
|
||
{
|
||
case (uint)MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono8:
|
||
case (uint)MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono10:
|
||
case (uint)MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono10_Packed:
|
||
case (uint)MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono12:
|
||
case (uint)MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono12_Packed:
|
||
return true;
|
||
default:
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 触发相机消息事件
|
||
/// </summary>
|
||
private void OnCameraMessage(string message, int errorCode = 0)
|
||
{
|
||
CameraMessage?.Invoke(this, message, errorCode);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 释放资源
|
||
/// </summary>
|
||
public void Dispose()
|
||
{
|
||
Close();
|
||
if (m_ConvertDstBuf != IntPtr.Zero)
|
||
{
|
||
Marshal.FreeHGlobal(m_ConvertDstBuf);
|
||
m_ConvertDstBuf = IntPtr.Zero;
|
||
}
|
||
if (m_bitmap != null)
|
||
{
|
||
m_bitmap.Dispose();
|
||
m_bitmap = null;
|
||
}
|
||
MyCamera.MV_CC_Finalize_NET();
|
||
}
|
||
}
|
||
}
|