标签：style blog ar io color os 使用 sp for
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
标签：style blog ar io color os 使用 sp for
原文地址：http://www.cnblogs.com/ching2009/p/4168000.html
