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AForge.net 使用之录像拍照功能实现

最近使用aforge.net拍照录像功能实现

记录一下以便以后好学习,哈哈,直接上代码

连接摄像头设备,这里需要引入

AForge.Video;

AForge.Video.DirectShow;

AForge.Video.FFMPEG;

还需要添加引用,aforge.dll,aforge.video,aforge.video.directshow,aforge.control,aforge.video.ffmpeg,

在工具箱中还需要添加AForge.Control,然后找到VideoSourcePlayer这个控件添加到界面上

然后定义变量

private FilterInfoCollection videoDevices;
private VideoCaptureDevice videoSource;

private bool stopREC = true;
private bool createNewFile = true;

private string videoFileFullPath = string.Empty; //视频文件全路径
private string imageFileFullPath = string.Empty; //图像文件全路径
private string videoPath = @"E:\video\"; //视频文件路径
private string imagePath = @"E:\video\images\"; //图像文件路径
private string videoFileName = string.Empty; //视频文件名
private string imageFileName = string.Empty; //图像文件名
private string drawDate = string.Empty;
private VideoFileWriter videoWriter = null;

public delegate void MyInvoke(); //定义一个委托方法

string g_s_AutoSavePath = AppDomain.CurrentDomain.BaseDirectory + "Capture\\";
object objLock = new object(); //定义一个对象的锁
int frameRate = 20; //默认帧率
private Stopwatch stopWatch = null;
IVideoSource iVideoSource = null;

private void InitUI(){    //连接    if (msc.OpenPort())    {        msc.ConnectMicroScopeControl();        //开启摄像头        videoDevices = vh.GetDevices();        if (videoDevices != null && videoDevices.Count > 0)        {            videoSource = vh.VideoConnect();        }        videoSourcePlayer1.VideoSource = videoSource;        videoSourcePlayer1.Start();    }}

开始录像

 private void btnStartVideotape_Click(object sender, EventArgs e)        {            //开始录像            if (btnStartVideotape.Text == "开始录像")            {                stopREC = false;                frameRate = Convert.ToInt32(txtFrameRate.Text.Trim());                btnStartVideotape.Text = "停止录像";            }            else if (btnStartVideotape.Text == "停止录像")            {                stopREC = true;                btnStartVideotape.Text = "开始录像";            }        }

添加aforge.net的一个VideoSourcePlayer控件之后找到NewFrame事件,代码如下:

下面是控件的一个事件,是真正录像的代码

private void videoSourcePlayer1_NewFrame(object sender, ref Bitmap image)        {            //录像            Graphics g = Graphics.FromImage(image);            SolidBrush drawBrush = new SolidBrush(Color.Yellow);            Font drawFont = new Font("Arial", 6, FontStyle.Bold, GraphicsUnit.Millimeter);            int xPos = image.Width - (image.Width - 15);            int yPos = 10;            //写到屏幕上的时间            drawDate = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");            g.DrawString(drawDate, drawFont, drawBrush, xPos, yPos);            if (!Directory.Exists(videoPath))                Directory.CreateDirectory(videoPath);            //创建文件路径            //fileFullPath = path + fileName;            if (stopREC)            {                stopREC = true;                createNewFile = true;  //这里要设置为true表示要创建新文件                if (videoWriter != null)                    videoWriter.Close();            }            else            {                //开始录像                if (createNewFile)                {                    videoFileName = DateTime.Now.ToString("yyyy.MM.dd HH.mm.ss") + ".avi";                    videoFileFullPath = videoPath + videoFileName;                    createNewFile = false;                    if (videoWriter != null)                    {                        videoWriter.Close();                        videoWriter.Dispose();                    }                    videoWriter = new VideoFileWriter();                    //这里必须是全路径,否则会默认保存到程序运行根据录下了                    videoWriter.Open(videoFileFullPath, image.Width, image.Height, frameRate, VideoCodec.MPEG4);                    videoWriter.WriteVideoFrame(image);                }                else                {                    videoWriter.WriteVideoFrame(image);                }            }        }

拍照代码

/// <summary>/// 手动拍照或抓图/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnCapture_Click(object sender, EventArgs e){    try    {        int number=0;        number++;        string fileImageName = g_s_RequestNo + "-" + number + ".bmp";        string fileCapturePath = g_s_AutoSavePath + g_s_RequestNo + "\\";        if (!Directory.Exists(fileCapturePath))            Directory.CreateDirectory(fileCapturePath);        //抓到图保存到指定路径        Bitmap bmp = null;        bmp = videoSourcePlayer1.GetCurrentVideoFrame();        if (bmp == null)        {            MessageBox.Show("捕获图像失败!", "提示");            return;        }                bmp.Save(fileCapturePath + fileImageName, ImageFormat.Bmp);                }    catch (Exception ex)    {        MessageBox.Show("捕获图像失败!" + ex.Message, "提示");    }}

最基本的工作就完成了,如果要更加完美的话还需要细化,优化等等,就先记录到此,以便记录自己的点点滴滴的进步

 

AForge.net 使用之录像拍照功能实现