AForge 摄像头播放（二）

使用AForge.Controls.VideoSourcePlayer组件

工具-选择工具箱    浏览选择AForge.Controls.dll   然后就有了VideoSourcePlayer组件

using System;
using System.Drawing;
using System.Windows.Forms;

using AForge.Video;
using AForge.Video.DirectShow;

namespace WindowsFormsApplication_Video
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();

            this.FormClosing += Form2_FormClosing;
            videoSourcePlayer1.NewFrame += VideoSourcePlayer1_NewFrame;
        }

        private void Form2_FormClosing(object sender, FormClosingEventArgs e)
        {
            ClosVideoSource();
        }

        private void VideoSourcePlayer1_NewFrame(object sender, ref Bitmap image)
        {
            DateTime now = DateTime.Now;
            Graphics g = Graphics.FromImage(image);

            //绘制当前日期
            SolidBrush brush = new SolidBrush(Color.Red);
            g.DrawString(now.ToString(), this.Font, brush, new PointF(5, 5));
            brush.Dispose();

            g.Dispose();
        }

        private void OpenVideoSource(IVideoSource source)
        {
            videoSourcePlayer1.VideoSource = source;
            videoSourcePlayer1.Start();
        }

        private void ClosVideoSource()
        {
            if (videoSourcePlayer1.VideoSource != null)
            {
                if (videoSourcePlayer1.IsRunning)
                {
                    videoSourcePlayer1.Stop();
                }
                videoSourcePlayer1.VideoSource = null;
            }
        }

        private void playToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //自带弹窗选择分辨率
            VideoCaptureDeviceForm form = new VideoCaptureDeviceForm();
            if (form.ShowDialog(this) == DialogResult.OK)
            {
                VideoCaptureDevice videoSource = form.VideoDevice;
                OpenVideoSource(videoSource);
            }


            //不弹窗
            //ClosVideoSource();
            //FilterInfoCollection videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            //if (videoDevices.Count == 0)
            //{
            //    MessageBox.Show("未找到摄像头");
            //    return;
            //}
            //FilterInfo info = videoDevices[0];//获取第一个摄像头
            //VideoCaptureDevice cameraDevice = new VideoCaptureDevice(info.MonikerString);
            //OpenVideoSource(cameraDevice);
        }

        private void pauseToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ClosVideoSource();
        }
    }
}