using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Threading;
using System.Windows.Forms;
using ThridLibray;namespace _1_5相机SDK图像采集
{public class Camera{List<IGrabbedRawData> m_frameList = new List<IGrabbedRawData>();        /* 图像缓存列表 */Thread renderThread = null;         /* 显示线程  */bool m_bShowLoop = true;            /* 线程控制变量 */Mutex m_mutex = new Mutex();        /* 锁，保证多线程安全 */public event Action<Bitmap> NewImage;public Camera(){if (null == renderThread){renderThread = new Thread(new ThreadStart(ShowThread));renderThread.IsBackground = true;renderThread.Start();}}/* 转码显示线程 */private void ShowThread(){while (m_bShowLoop){if (m_frameList.Count == 0){Thread.Sleep(1);continue;}/* 图像队列取最新帧 */m_mutex.WaitOne();IGrabbedRawData frame = m_frameList.ElementAt(0);m_frameList.RemoveAt(0);m_frameList.Clear();m_mutex.ReleaseMutex();/* 主动调用回收垃圾 */GC.Collect();try{/* 图像转码成bitmap图像 */var bitmap = frame.ToBitmap(false);if (NewImage!=null){NewImage(bitmap);}}catch (Exception exception){Catcher.Show(exception);}}}/* 设备对象 */private IDevice m_dev;/* 相机打开回调 */private void OnCameraOpen(object sender, EventArgs e){MessageBox.Show("相机已打开！");}/* 相机关闭回调 */private void OnCameraClose(object sender, EventArgs e){MessageBox.Show("相机已关闭！");}/* 相机丢失回调 */private void OnConnectLoss(object sender, EventArgs e){m_dev.ShutdownGrab();m_dev.Dispose();m_dev = null;}public void btnOpen(){try{/* 设备搜索 */List<IDeviceInfo> li = Enumerator.EnumerateDevices();if (li.Count > 0){/* 获取搜索到的第一个设备 */m_dev = Enumerator.GetDeviceByIndex(0);/* 注册链接事件 */m_dev.CameraOpened += OnCameraOpen;m_dev.CameraClosed += OnCameraClose;/* 打开设备 */if (!m_dev.Open()){MessageBox.Show(@"连接相机失败");return;}/* 打开Software Trigger */m_dev.TriggerSet.Open(TriggerSourceEnum.Software);/* 设置图像格式 */using (IEnumParameter p = m_dev.ParameterCollection[ParametrizeNameSet.ImagePixelFormat]){p.SetValue("Mono8");}/* 设置曝光 */using (IFloatParameter p = m_dev.ParameterCollection[ParametrizeNameSet.ExposureTime]){p.SetValue(1000);}/* 设置增益 */using (IFloatParameter p = m_dev.ParameterCollection[ParametrizeNameSet.GainRaw]){p.SetValue(1.0);}/* 设置缓存个数为8（默认值为16） */m_dev.StreamGrabber.SetBufferCount(8);/* 注册码流回调事件 */m_dev.StreamGrabber.ImageGrabbed += OnImageGrabbed;/* 开启码流 */if (!m_dev.GrabUsingGrabLoopThread()){MessageBox.Show(@"开启码流失败");return;}}}catch (Exception exception){Catcher.Show(exception);}}/* 码流数据回调 */private void OnImageGrabbed(Object sender, GrabbedEventArgs e){m_mutex.WaitOne();m_frameList.Add(e.GrabResult.Clone());m_mutex.ReleaseMutex();}/* 停止码流 */public void btnClose(){try{if (m_dev == null){throw new InvalidOperationException("Device is invalid");}m_dev.StreamGrabber.ImageGrabbed -= OnImageGrabbed;         /* 反注册回调 */m_dev.ShutdownGrab();                                       /* 停止码流 */m_dev.Close();                                              /* 关闭相机 */}catch (Exception exception){Catcher.Show(exception);}}/* 窗口关闭 */public void OnClosed(EventArgs e){if (m_dev != null){m_dev.Dispose();m_dev = null;}m_bShowLoop = false;renderThread.Join();}/* 执行软触发 */public void SoftwareTrigger(){if (m_dev == null){throw new InvalidOperationException("Device is invalid");}try{m_dev.ExecuteSoftwareTrigger();}catch (Exception exception){Catcher.Show(exception);}}}
}