C#操作Aforge摄像头 实现拍照、录像功能
准备
添加引用
http://download.csdn.net/download/u011463646/10021001
.NET 2.0以上 你给项目添加.NET引用 找到PresentationCore添加上就可以了.
设计界面
运行
【代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing.Imaging;
using System.Text;
using System.Windows;
using System.Windows.Forms;
//添加的
using System.IO;
using System.Windows.Media.Imaging;
using AForge;
using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;
using Size = System.Drawing.Size;
namespace AforgeCameraOne
{
public partial class Form1 : Form
{
private FilterInfoCollection videoDevices;
private VideoCaptureDevice videoSource;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
try
{
// 枚举所有视频输入设备
videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
if (videoDevices.Count == 0)
throw new ApplicationException();
foreach (FilterInfo device in videoDevices)
{
int i = 1;
tscbxCameras.Items.Add(device.Name);
textBoxC.AppendText("摄像头" + i + "初始化完毕..." + "\n");
textBoxC.ScrollToCaret();
i++;
}
tscbxCameras.SelectedIndex = 0;
}
catch (ApplicationException)
{
tscbxCameras.Items.Add("No local capture devices");
videoDevices = null;
}
}
private void btnConnect_Click(object sender, EventArgs e)
{
CameraConn();
}
//连接摄像头1
private void CameraConn()
{
VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[tscbxCameras.SelectedIndex].MonikerString);
videoSource.DesiredFrameSize = new System.Drawing.Size(320, 240);
videoSource.DesiredFrameRate = 1;
videoSourcePlayer.VideoSource = videoSource;
videoSourcePlayer.Start();
}
private void btnClose_Click(object sender, EventArgs e)
{
videoSourcePlayer.SignalToStop();
videoSourcePlayer.WaitForStop();
}
//主窗体关闭
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
btnClose_Click(null, null);
}
private void Photograph_Click(object sender, EventArgs e)
{
try
{
if (videoSourcePlayer.IsRunning)
{
//System.Windows.Media.Imaging
BitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
videoSourcePlayer.GetCurrentVideoFrame().GetHbitmap(),
IntPtr.Zero,
Int32Rect.Empty,//System.Drawing.Imaging;
BitmapSizeOptions.FromEmptyOptions());
PngBitmapEncoder pE = new PngBitmapEncoder();
pE.Frames.Add(BitmapFrame.Create(bitmapSource));
string picName = GetImagePath() + "\\" + "xiaosy" + ".jpg";
textBoxC.AppendText("保存路径：" + picName + "\n");
textBoxC.ScrollToCaret();
if (File.Exists(picName))
{
File.Delete(picName);
}
using (Stream stream = File.Create(picName))
{
pE.Save(stream);
}
}
}
catch (Exception ex)
{
MessageBox.Show("摄像头异常：" + ex.Message);
}
}
private string GetImagePath()
{
string personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)
+ Path.DirectorySeparatorChar.ToString() + "PersonImg";
if (!Directory.Exists(personImgPath))
{
Directory.CreateDirectory(personImgPath);
}
return personImgPath;
}
private void btnExit_Click(object sender, EventArgs e)
{
//拍照完成后关摄像头并刷新,同时关窗体
if (videoSourcePlayer != null && videoSourcePlayer.IsRunning)
{
videoSourcePlayer.SignalToStop();
videoSourcePlayer.WaitForStop();
}
this.Close();
}
}
}
优点
videoSourcePlayer框的大小能够完整显示图像，比AForge Video好多了。
进一步改善，添加连续拍照功能
实时保存图像：
连续拍照AforgeCameraOne代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing.Imaging;
using System.Text;
using System.Windows;
using System.Windows.Forms;
//添加的
using System.IO;
using System.Windows.Media.Imaging;
using AForge;
using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;
using AForge.Video.FFMPEG;
using Size = System.Drawing.Size;
namespace AforgeCameraOne
{
public partial class Form1 : Form
{
private delegate void MyDelegateUI();//多线程问题
private FilterInfoCollection videoDevices; //摄像头设备
private VideoCaptureDevice videoSource; //视频的来源选择
private VideoSourcePlayer videoSourcePlayer; //AForge控制控件
private VideoFileWriter videoWriter; //写入到视频
private bool is_record_video = false; //是否开始录像
private bool is_multiPhotograph = false; //是否连续拍照
System.Timers.Timer timer_count;
int tick_num = 0;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
try
{
// 枚举所有视频输入设备
videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
if (videoDevices.Count == 0)
throw new ApplicationException();
foreach (FilterInfo device in videoDevices)
{
int i = 1;
tscbxCameras.Items.Add(device.Name);
textBoxC.AppendText("摄像头" + i + "初始化完毕..." + "\n");
textBoxC.ScrollToCaret();
i++;
}
tscbxCameras.SelectedIndex = 0;
}
catch (ApplicationException)
{
tscbxCameras.Items.Add("No local capture devices");
videoDevices = null;
}
}
private void btnConnect_Click(object sender, EventArgs e)
{
CameraConn();
}
//连接摄像头1
private void CameraConn()
{
VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[tscbxCameras.SelectedIndex].MonikerString);
videoSource.DesiredFrameSize = new System.Drawing.Size(640, 480);//不起作用
videoSource.DesiredFrameRate = 1;
videoSourcePlayer.VideoSource = videoSource;
videoSource.NewFrame += new NewFrameEventHandler(videoSource_NewFrame);
videoSourcePlayer.Start();
}
private void btnClose_Click(object sender, EventArgs e)
{
videoSourcePlayer.SignalToStop();
videoSourcePlayer.WaitForStop();
}
//主窗体关闭
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
btnClose_Click(null, null);
}
//拍一次照片
private void btnPhotograph_Click(object sender, EventArgs e)
{
try
{
if (videoSourcePlayer.IsRunning)
{
//System.Windows.Media.Imaging
BitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
videoSourcePlayer.GetCurrentVideoFrame().GetHbitmap(),
IntPtr.Zero,
Int32Rect.Empty,//System.Drawing.Imaging;
BitmapSizeOptions.FromEmptyOptions());
PngBitmapEncoder pE = new PngBitmapEncoder();
pE.Frames.Add(BitmapFrame.Create(bitmapSource));
string picName = GetImagePath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss") + ".jpg";
textBoxC.AppendText("保存路径：" + picName + "\n");
textBoxC.ScrollToCaret();
if (File.Exists(picName))
{
File.Delete(picName);
}
using (Stream stream = File.Create(picName))
{
pE.Save(stream);
}
}
}
catch (Exception ex)
{
MessageBox.Show("摄像头异常：" + ex.Message);
}
}
//拍多次照片
private void btnMultiPhotograph_Click(object sender, EventArgs e)
{
try
{
if (videoSourcePlayer.IsRunning && btnMultiPhotograph.Text.Trim()=="连续拍照")
{
//抓到图保存到指定路径
//System.Drawing.Bitmap bmp1 = null;
//bmp1 = videoSourcePlayer.GetCurrentVideoFrame();
is_multiPhotograph = true;
btnMultiPhotograph.Text = "终止拍照";
return;//这句重要
}
if (videoSourcePlayer.IsRunning && btnMultiPhotograph.Text.Trim() == "终止拍照")
{
is_multiPhotograph = false;
btnMultiPhotograph.Text = "连续拍照";
}
}
catch (Exception ex)
{
MessageBox.Show("摄像头异常：" + ex.Message);
}
}
void videoSource_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs)
{
if (is_multiPhotograph)
{
System.Drawing.Bitmap bmp1 = (System.Drawing.Bitmap)eventArgs.Frame.Clone();
string picName = GetImagePath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss") + ".jpg";
MyDelegateUI d = delegate
{
this.textBoxC.AppendText("保存路径：" + picName + "\n");
textBoxC.ScrollToCaret();
};
this.textBoxC.Invoke(d);
if (File.Exists(picName))
{
File.Delete(picName);
}
using (Stream stream = File.Create(picName))
{
bmp1.Save(stream, ImageFormat.Bmp);
}
}
}
//获得路径
private string GetImagePath()
{
string personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)
+ Path.DirectorySeparatorChar.ToString() + "PersonImg";
if (!Directory.Exists(personImgPath))
{
Directory.CreateDirectory(personImgPath);
}
return personImgPath;
}
//退出按钮
private void btnExit_Click(object sender, EventArgs e)
{
//拍照完成后关摄像头并刷新,同时关窗体
if (videoSourcePlayer != null && videoSourcePlayer.IsRunning)
{
videoSourcePlayer.SignalToStop();
videoSourcePlayer.WaitForStop();
}
this.Close();
}
}
}
终极完善，添加Video的录制功能
这次优化了界面初始化的按钮状态，以及随时录制视频的功能。并在Video上打印文字如时间等等。环境配置与AForge Video同。
出现问题：
拍照+录像代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing.Imaging;
using System.Text;
using System.Windows;
using System.Windows.Forms;
//添加的
using System.IO;
using System.Windows.Media.Imaging;
using AForge;
using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;
using AForge.Video.FFMPEG;
using Size = System.Drawing.Size;
namespace AforgeCameraOne
{
public partial class Form1 : Form
{
private delegate void MyDelegateUI();//多线程问题
private FilterInfoCollection videoDevices; //摄像头设备
private VideoCaptureDevice videoSource; //视频的来源选择
private VideoSourcePlayer videoSourcePlayer; //AForge控制控件
private VideoFileWriter videoWriter=null; //写入到视频
private bool is_record_video = false; //是否开始录像
private bool is_multiPhotograph = false; //是否连续拍照
System.Drawing.Bitmap bmp1 = null;
System.Timers.Timer timer_count;
int tick_num = 0;
int hour = 0;
int i = 1; //统计摄像头个数
int width = 640; //录制视频的宽度
int height = 480; //录制视频的高度
int fps = 20; //正常速率，fps越大速率越快，相当于快进
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//初始化按钮状态
btnClose.Enabled = false;
btnPhotograph.Enabled = false;
btnMultiPhotograph.Enabled = false;
btnStarVideo.Enabled = false;
btnPuaseVideo.Enabled = false;
btnStopVideo.Enabled = false;
try
{
// 枚举所有视频输入设备
videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
if (videoDevices.Count == 0)
throw new ApplicationException();
foreach (FilterInfo device in videoDevices)
{
tscbxCameras.Items.Add(device.Name);
textBoxC.AppendText("摄像头" + i + "初始化完毕..." + "\n");
textBoxC.ScrollToCaret();
i++;
}
tscbxCameras.SelectedIndex = 0;
}
catch (ApplicationException)
{
tscbxCameras.Items.Add("No local capture devices");
videoDevices = null;
}
//秒表
timer_count = new System.Timers.Timer(); //实例化Timer类，设置间隔时间为1000毫秒；
timer_count.Elapsed += new System.Timers.ElapsedEventHandler(tick_count); //到达时间的时候执行事件；
timer_count.AutoReset = true; //设置是执行一次（false）还是一直执行(true)；
timer_count.Interval = 1000;
}
//计时器响应函数
public void tick_count(object source, System.Timers.ElapsedEventArgs e)
{
tick_num++;
int temp = tick_num;
int sec = temp % 60;
int min = temp / 60;
if (min % 60 == 0)
{
hour = min / 60;
min = 0;
}
else
{
min = min - hour * 60;
}
String tick = hour.ToString() + "：" + min.ToString() + "：" + sec.ToString();
MyDelegateUI d = delegate
{
this.labelTime.Text = tick;
};
this.labelTime.Invoke(d);
}
private void btnConnect_Click(object sender, EventArgs e)
{
CameraConn();
//激活初始化按钮状态
btnClose.Enabled = true;
btnPhotograph.Enabled = true;
btnMultiPhotograph.Enabled = true;
btnStarVideo.Enabled = true;
btnPuaseVideo.Enabled = true;
btnStopVideo.Enabled = true;
}
//连接摄像头1
private void CameraConn()
{
VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[tscbxCameras.SelectedIndex].MonikerString);
videoSource.DesiredFrameSize = new System.Drawing.Size(640, 480);//不起作用
videoSource.DesiredFrameRate = 1;
videoSourcePlayer.VideoSource = videoSource;
videoSource.NewFrame += new NewFrameEventHandler(videoSource_NewFrame);
videoSourcePlayer.Start();
}
private void btnClose_Click(object sender, EventArgs e)
{
videoSourcePlayer.SignalToStop();
videoSourcePlayer.WaitForStop();
}
//主窗体关闭
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
btnClose_Click(null, null);
}
//拍一次照片
private void btnPhotograph_Click(object sender, EventArgs e)
{
try
{
if (videoSourcePlayer.IsRunning)
{
//System.Windows.Media.Imaging
BitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
videoSourcePlayer.GetCurrentVideoFrame().GetHbitmap(),
IntPtr.Zero,
Int32Rect.Empty,//System.Drawing.Imaging;
BitmapSizeOptions.FromEmptyOptions());
PngBitmapEncoder pE = new PngBitmapEncoder();
pE.Frames.Add(BitmapFrame.Create(bitmapSource));
string picName = GetImagePath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss") + ".jpg";
textBoxC.AppendText("保存路径：" + picName + "\n");
textBoxC.ScrollToCaret();
if (File.Exists(picName))
{
File.Delete(picName);
}
using (Stream stream = File.Create(picName))
{
pE.Save(stream);
}
}
}
catch (Exception ex)
{
MessageBox.Show("摄像头异常：" + ex.Message);
}
}
//拍多次照片
private void btnMultiPhotograph_Click(object sender, EventArgs e)
{
try
{
if (videoSourcePlayer.IsRunning && btnMultiPhotograph.Text.Trim()=="连续拍照")
{
//抓到图保存到指定路径
//System.Drawing.Bitmap bmp1 = null;
//bmp1 = videoSourcePlayer.GetCurrentVideoFrame();
is_multiPhotograph = true;
btnMultiPhotograph.Text = "终止拍照";
return;//这句重要
}
if (videoSourcePlayer.IsRunning && btnMultiPhotograph.Text.Trim() == "终止拍照")
{
is_multiPhotograph = false;
btnMultiPhotograph.Text = "连续拍照";
}
}
catch (Exception ex)
{
MessageBox.Show("摄像头异常：" + ex.Message);
}
}
void videoSource_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs)
{
bmp1 = (System.Drawing.Bitmap)eventArgs.Frame.Clone();
//Write Images
if (is_multiPhotograph)
{
string picName = GetImagePath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss-ffff") + ".jpg";
MyDelegateUI d = delegate
{
this.textBoxC.AppendText("保存路径：" + picName + "\n");
textBoxC.ScrollToCaret();
};
this.textBoxC.Invoke(d);
if (File.Exists(picName))
{
File.Delete(picName);
}
using (Stream stream = File.Create(picName))
{
bmp1.Save(stream, ImageFormat.Bmp);
}
}
//Write Videos
if (is_record_video)
{
bmp1 = videoSourcePlayer.GetCurrentVideoFrame();
videoWriter.WriteVideoFrame(bmp1);
}
}
//获得Images路径
private string GetImagePath()
{
string personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)
+ Path.DirectorySeparatorChar.ToString() + "PersonImg";
if (!Directory.Exists(personImgPath))
{
Directory.CreateDirectory(personImgPath);
}
return personImgPath;
}
//获取Video相对路径
private String GetVideoPath()
{
String personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)
+ Path.DirectorySeparatorChar.ToString() + "MyVideo";
if (!Directory.Exists(personImgPath))
{
Directory.CreateDirectory(personImgPath);
}
return personImgPath;
}
//退出按钮
private void btnExit_Click(object sender, EventArgs e)
{
if (this.videoWriter == null)
{
//MessageBox.Show("videoWriter对象未实例化。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
//return;
videoWriter = new VideoFileWriter();
}
if (this.videoWriter.IsOpen)
{
MessageBox.Show("视频流还没有写完，请点击结束录制。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//拍照完成后关摄像头并刷新,同时关窗体
if (videoSourcePlayer != null && videoSourcePlayer.IsRunning)
{
videoSourcePlayer.SignalToStop();
videoSourcePlayer.WaitForStop();
}
this.Close();
}
//开始录像
private void btnStarVideo_Click(object sender, EventArgs e)
{
try
{
//创建一个视频文件
String picName = GetVideoPath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss") + ".avi";
textBoxC.AppendText("Video保存地址：" + picName + "\n");
textBoxC.ScrollToCaret();
timer_count.Enabled = true;//是否执行System.Timers.Timer.Elapsed事件；
textBoxC.AppendText("录制中...\n");
is_record_video = true;
videoWriter = new VideoFileWriter();
if (videoSourcePlayer.IsRunning)
{
videoWriter.Open(picName, width, height, fps, VideoCodec.MPEG4);
}
else
{
MessageBox.Show("没有视频源输入，无法录制视频。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
catch (Exception ex)
{
MessageBox.Show("摄像头异常：" + ex.Message);
}
}
//暂停录像
private void btnPuaseVideo_Click(object sender, EventArgs e)
{
if (this.btnPuaseVideo.Text.Trim() == "暂停录像")
{
is_record_video = false;
this.btnPuaseVideo.Text = "恢复录像";
timer_count.Enabled = false; //暂停计时
return;
}
if (this.btnPuaseVideo.Text.Trim() == "恢复录像")
{
is_record_video = true;
this.btnPuaseVideo.Text = "暂停录像";
timer_count.Enabled = true; //恢复计时
}
}
private void btnStopVideo_Click(object sender, EventArgs e)
{
this.is_record_video = false;
this.videoWriter.Close();
this.timer_count.Enabled = false;
tick_num = 0;
textBoxC.AppendText("录制停止!\n");
textBoxC.ScrollToCaret();
}
}
}
参考
【1】C#操作摄像头 实现拍照功能 - 迷失的醉猫 - 博客园
http://www.cnblogs.com/xsyblogs/p/3551986.html
【2】C# 调用AForge类库操作摄像头 - CSDN博客
http://blog.csdn.net/chenhongwu666/article/details/40594365