首先安装jmf,安装过程中会提示注册摄像头.

首先安装jmf,安装过程中会提示注册摄像头.

开始代码

用applet比较快

001 package com.cayden.video;
002
003 import java.awt.BorderLayout;
004 import java.awt.Choice;
005 import java.awt.Component;
006 import java.util.Vector;
007
008 import javax.media.CaptureDeviceInfo;
009 import javax.media.CaptureDeviceManager;
010 import javax.media.Format;
011 import javax.media.Manager;
012 import javax.media.MediaLocator;
013 import javax.media.Player;
014 import javax.media.format.VideoFormat;
015 import javax.swing.JApplet;
016 import javax.swing.JPanel;
017
018 public classVApplet extends JApplet {
019
020     privateJPanel jContentPane = null;
021
022     privateChoice choice = null;
023
024     publicVApplet() {
025         super();
026     }
027
028     publicvoid init() {
029         this.setSize(640,480);
030         this.setContentPane(getJContentPane());
031         this.setName("VApplet");
032     }
033     // 取系统所有可采集的硬件设备列表
034     privateCaptureDeviceInfo[] getDevices() {
035
036         Vector devices = CaptureDeviceManager.getDeviceList(null);
037
038         CaptureDeviceInfo[] info =new CaptureDeviceInfo[devices.size()];
039         for(int i = 0; i < devices.size(); i++) {
040             info[i] = (CaptureDeviceInfo) devices.get(i);
041         }
042         returninfo;
043     }
044     // 从已知设备中取所有视频设备的列表
045     privateCaptureDeviceInfo[] getVideoDevices() {
046
047         CaptureDeviceInfo[] info = getDevices();
048
049         System.out.println("设备数:"+info.length);
050
051         CaptureDeviceInfo[] videoDevInfo;
052
053         Vector vc =new Vector();
054
055         for(int i = 0; i < info.length; i++) {
056
057         // 取设备支持的格式，如果有一个是视频格式，则认为此设备为视频设备
058         Format[] fmt = info[i].getFormats();
059
060         System.out.println("fmt.length="+fmt.length);
061
062             for(int j = 0; j < fmt.length; j++) {
063                 if(fmt[j] instanceof VideoFormat) {
064                     System.out.println("fmt[j] "+fmt[j]);
065                     vc.add(info[i]);
066                 }
067                 break;
068             }
069         }
070
071         videoDevInfo =new CaptureDeviceInfo[vc.size()];
072
073         for(int i = 0; i < vc.size(); i++) {
074             videoDevInfo[i] = (CaptureDeviceInfo) vc.get(i);
075         }
076
077         System.out.println("videoDevInfo "+videoDevInfo.length);
078
079         returnvideoDevInfo;
080     }
081
082     privateJPanel getJContentPane() {
083     if(jContentPane == null) {
084     BorderLayout borderLayout =new BorderLayout();
085     jContentPane =new JPanel();
086     jContentPane.setLayout(borderLayout);
087
088     MediaLocator ml =null;
089     Player player =null;
090     try{
091     // 这里我只有一个视频设备，直接取第一个
092      // 取得当备的MediaLocator
093     ml = getVideoDevices()[0].getLocator();
094     // 用已经取得的MediaLocator得到一个Player
095     player = Manager.createRealizedPlayer(ml);
096     player.start();
097     // 取得Player的AWT Component
098     Component comp = player.getVisualComponent();
099     // 如果是音频设备这个方法将返回null,这里要再判断一次
100     if(comp != null) {
101     // 将Component加到窗体
102     jContentPane.add(comp, BorderLayout.EAST);
103     }
104     } catch (Exception e) {
105     e.printStackTrace();
106     }
107     }
108     returnjContentPane;
109     }
110     }

1

1

1

1 运行效果如图所示.

1

<img src="http://pic002.cnblogs.com/img/cayden/201007/2010070117042292.jpg"alt="视频图片"> jmf启动摄像头拍照 (2011-07-23 15:20:53) 转载 标签： it 分类：java import java.awt.BorderLayout; import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Panel; import java.awt.event.*; import java.awt.image.BufferedImage; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.File; import javax.media.Buffer; import javax.media.CannotRealizeException; import javax.media.CaptureDeviceInfo; import javax.media.CaptureDeviceManager; import javax.media.Manager; import javax.media.MediaLocator; import javax.media.NoPlayerException; import javax.media.Player; import javax.media.control.FrameGrabbingControl; import javax.media.format.VideoFormat; import javax.media.util.BufferToImage; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextField; import com.sun.image.codec.jpeg.ImageFormatException; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGEncodeParam; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class GetPhoto extends JPanel implements ActionListener{  private CaptureDeviceInfocaptureDeviceInfo=null;  private MediaLocator mediaLocator=null;  private static Player player=null;  private ImagePanel imagePanel=null;  private JButton jbok,jbcancel;  private Buffer buffer=null;  private VideoFormat videoFormat=null;  private BufferToImage bufferToImage=null;  private Image image=null;  private JPanel jp=new JPanel();    public GetPhoto()  {   //setLayout(newBorderLayout());   this.setLayout(null);   setSize(300,500);   String str="vfw:Microsoft WDMImage Capture (Win32):0";   captureDeviceInfo=CaptureDeviceManager.getDevice(str);   mediaLocator=newMediaLocator("vfw://0");   imagePanel=newImagePanel();   jbok=newJButton("拍   照");   jbcancel=newJButton("重   拍");   jbok.addActionListener(this);   jbcancel.addActionListener(this);      try {    player=Manager.createRealizedPlayer(mediaLocator);    player.start();    Componentcomp;    if((comp=player.getVisualComponent())!=null)    comp.setBounds(0,0, 240, 180);    this.add(comp);   } catch (NoPlayerExceptione)   {    e.printStackTrace();   } catch (CannotRealizeExceptione)   {    e.printStackTrace();   } catch (IOException e)   {    e.printStackTrace();   }     jp.add(jbok);   jp.add(jbcancel);   jp.add(imagePanel);   jp.setBounds(0, 180, 240,200);   this.add(jp);  }  public void print(Graphics g)  {   super.print(g);   g.setColor(newColor(255,0,0));   g.drawLine(0, 0, 100,100);  }  public void actionPerformed(ActionEvent e)  {   if(e.getSource()==jbok)   {    FrameGrabbingControlfgc=(FrameGrabbingControl)player.getControl("javax.media.control.FrameGrabbingControl");    buffer=fgc.grabFrame();    bufferToImage=newBufferToImage((VideoFormat)buffer.getFormat());    image=bufferToImage.createImage(buffer);    imagePanel.setImage(image);    saveImage(image,"temp.jpg");   }   if(e.getSource()==jbcancel)   {    imagePanel.setImage(null);   }      }  public static void saveImage(Imageimage,String path)  {    BufferedImagebi=newBufferedImage(image.getWidth(null),image.getHeight(null),BufferedImage.TYPE_INT_RGB);    Graphics2D g2= bi.createGraphics();    g2.drawImage(image,null, null);    FileOutputStreamfos=null;        try {     fos=newFileOutputStream(path);    } catch(FileNotFoundException e)    {     e.printStackTrace();    }    JPEGImageEncoderje=JPEGCodec.createJPEGEncoder(fos);    JPEGEncodeParamjp=je.getDefaultJPEGEncodeParam(bi);    jp.setQuality(1f,false);    je.setJPEGEncodeParam(jp);    try {     je.encode(bi);     fos.close();    } catch(ImageFormatException e)    {     e.printStackTrace();    } catch(IOException e)    {     e.printStackTrace();    }  }  public static File getImage()  {   File f=newFile("temp.jpg");   return f;     }    class ImagePanel extends Panel  {    public Imagemyimg = null;    publicImagePanel()    {     setLayout(null);     setSize(240,180);    }    publicvoid setImage(Image img)    {     this.myimg= img;     repaint();    }    publicvoid paint(Graphics g)    {     if(myimg != null)     {      g.drawImage(myimg,0, 0, this);     }    }    }    public static void main(String[] args)  {   JFrame f = newJFrame("FirstCapture");   GetPhoto cf = newGetPhoto();   f.addWindowListener(newWindowAdapter() {    public voidwindowClosing(WindowEvent e) {     player.close();    System.exit(0);}});   f.add("Center",cf);   f.pack();   f.setBounds(100,100,240,550);   f.setVisible(true);  }   }