C#调用摄像头(AForge.Video)

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using AForge.Video.DirectShow;
using AForge.Video;
using System.Threading;

namespace ChildManageClient
{
    public partial class MySourceVideoPlayer : UserControl, ICaptureImage
    {
        private FilterInfoCollection videoDevices;
        private CameraType cameraType = CameraType.UNKNOWN;
        private RealPlayOnWindowIPC playOnWinIPC;
        private string sourceid;
        private bool isPlaying;
        private SAMSUNG_RTSPCamera samsung;

        public MySourceVideoPlayer()
        {
            InitializeComponent();
            this.videoSourcePlayer.Dock = DockStyle.Fill;
            this.videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
        }
        public Bitmap CapturePicture()
        {
            if (this.playOnWinIPC != null)
            {
                return this.playOnWinIPC.CapturePicture();
            }
            return this.videoSourcePlayer.GetCurrentVideoFrame();
        }

        private void OpenVideoSource(IVideoSource source)
        {
            this.videoSourcePlayer.SignalToStop();
            this.videoSourcePlayer.WaitForStop();
            this.videoSourcePlayer.VideoSource = source;
            this.videoSourcePlayer.Start();
        }

        public void CloseVideoSource()
        {
            if (this.videoSourcePlayer.IsRunning)
            {
                this.videoSourcePlayer.SignalToStop();
                this.videoSourcePlayer.WaitForStop();
                this.videoSourcePlayer.VideoSource = null;
                this.videoSourcePlayer.Stop();
            }
        }
        public void PlayIPC(CameraType cameraType, string ipaddress, ushort port, string username, string password)
        {
            switch (cameraType)
            {
                case CameraType.USBCAMERA:
                    this.PlayUSBCamera();
                    break;
                case CameraType.SAMSUNG:
                    string sAMSUNGurl = Utils.GetSAMSUNGurl(ipaddress, MediaType.jpg);
                    this.PlayJPEGURL(sAMSUNGurl, username, password);
                    break;
                case CameraType.SAMSUNG_RTSP:
                    if (this.samsung == null)
                    {
                        this.samsung = new SAMSUNG_RTSPCamera();
                    }
                    this.RealPlayOnWindow(this.samsung, ipaddress, port, username, password,"IPC");
                    break;
            }
        }
        public void PlayJPEGURL(string URL)
        {

        }
        public void PlayJPEGURL(string URL, string username, string password)
        {
            JPEGStream source = new JPEGStream(URL);
            //MJPEGStream source = new MJPEGStream(URL);
            source.Login = username;
            source.Password = password;
            this.OpenVideoSource(source);
        }
        public void PlayUSBCamera()
        {
            this.sourceid = "USBCamera";
            if (this.videoDevices.Count > 0)
            {
                VideoCaptureDevice source = new VideoCaptureDevice(this.videoDevices[0].MonikerString);
                this.OpenVideoSource(source);
            }
            this.cameraType = CameraType.USBCAMERA;
        }

        private void RealPlayOnWindow(RealPlayOnWindowIPC ipc, string ipaddress, ushort port, string username, string password, string sModelName)
        {
            this.CloseCurrentVideoSource();
            this.playOnWinIPC = ipc;
            this.playOnWinIPC.RealPlayHandle = this.videoSourcePlayer.Handle;
            try
            {
                this.playOnWinIPC.Login(ipaddress, port, username, password, sModelName);
            }
            catch (Exception exception)
            {
                MessageBox.Show(exception.Message);
            }
            this.playOnWinIPC.RealPlay();
        }

        public void Stop()
        {
            this.CloseCurrentVideoSource();
        }

        private void CloseCurrentVideoSource()
        {
            this.isPlaying = false;
            if (this.playOnWinIPC != null)
            {
                if (this.playOnWinIPC.IsPlaying)
                {
                    this.playOnWinIPC.StopPlay();
                }
                this.playOnWinIPC.Logout();
                if (!(this.playOnWinIPC is SAMSUNG_RTSPCamera))
                {
                    this.playOnWinIPC.Dispose();
                }
                this.playOnWinIPC = null;
                this.videoSourcePlayer.Refresh();
            }
            if (this.videoSourcePlayer.VideoSource != null)
            {
                this.videoSourcePlayer.SignalToStop();
                for (int i = 0; i < 30; i  )
                {
                    if (!this.videoSourcePlayer.IsRunning)
                    {
                        break;
                    }
                    Thread.Sleep(100);
                }
                if (this.videoSourcePlayer.IsRunning)
                {
                    this.videoSourcePlayer.Stop();
                }
                this.videoSourcePlayer.VideoSource = null;
            }
            this.cameraType = CameraType.UNKNOWN;
        }

        public bool IsPlaying
        {
            get
            {
                return this.isPlaying;
            }
        }

        public string SourceID
        {
            get
            {
                return this.sourceid;
            }
            set
            {
                this.sourceid = value;
            }
        }
    }
}