Camera class and device path...

[Justin Fox]

I'm looking into the Camera class, and I don't know how to find out the path name to my device, could anyone help me out?

thanks,

Justin Fox

[Bear Bibeault]

Invert the phase coupler and focus the gravitron flow.

Seriously, what Camera class?

[Justin Fox]

lol, well I googled "Camera Class Java" and it came up, But I trashed that endeavor and looked into the JMF2.1.1 .

Umm, I got the app I'm using to connect to my usb quickcam. I have a little routine that when I click "record" it basically just takes a picture every 2.25 seconds. The loop to do this is a while() loop and I just do a procedure (take a pic) and then use robot.delay() function to pause for 2250 ms.

But I want to be able to press a pause button, and when the program is "recording" the UI freezes up and I can't press anything, the loop works and it does take pictures, but i have to ctrl+c to exit too.

I dont know how to go about this to where the buttons are always clickable even if that while loop is going.

My guess is that the robot.delay() is basically just like thread.sleep() and pauses the main thread so nothing else can happen, and by the time it is done pausing, its pausing again. So in reality there is basically no time to click on another button.

If I could get some help, That would be awesome.

I'm at work right now, so I'll post the code when I get home.
But some thoughts on how to approach this would still be greatly
appreciated.

Justin Fox

[Justin Fox]

    
 
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import javax.media.*;
import javax.media.format.*;
import javax.media.util.*;
import javax.media.control.*;
import javax.media.protocol.*;
import java.util.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import com.sun.image.codec.jpeg.*;
import java.util.Calendar;
import java.text.SimpleDateFormat;
 
 
public class SwingCapture extends JPanel implements ActionListener 
{
  public static Player player = null;
  public CaptureDeviceInfo di = null;
  public MediaLocator ml = null;
  public JButton capture = null;
  public JButton pause = null;
  public Buffer buf = null;
  public Image img = null;
  public VideoFormat vf = null;
  public BufferToImage btoi = null;
 // public ImagePanel imgpanel = null;
  public Robot recorder;
  public boolean stop;
  public static final String DATE_FORMAT_NOW = "yyyy-MM-dd HH-mm-ss";
  public JLabel label;
  public String A = null;
  public int count;
  public String label1;
 
  public SwingCapture() 
  {
 
try{ recorder = new Robot(); }catch(Exception e){}
 
    setLayout(new FlowLayout());
    setSize(320,550);
    
   // imgpanel = new ImagePanel();
    capture = new JButton("Record");
    label = new JLabel("");
   // capture.setBounds(320,20,80,20);
    pause = new JButton("Pause");
    //pause.setBounds(320,50,80,20);
    capture.addActionListener(this);
    //pause.addActionListener(new pause());
    
    String str1 = "vfw:Logitech USB Video Camera:0";
    String str2 = "vfw:Microsoft WDM Image Capture (Win32):0";
    di = CaptureDeviceManager.getDevice(str2);
    ml = di.getLocator();
    
    try 
    {
      player = Manager.createRealizedPlayer(ml);
      player.start();
      Component comp;
      
      if ((comp = player.getVisualComponent()) != null)
      {
//comp.setBounds(2,2,320,290);
        add(comp);
      }
      add(capture);
      add(pause);
      //add(imgpanel);
    } 
    catch (Exception e) 
    {
      e.printStackTrace();
    }
  }
 
     public void paintComponent(Graphics g) 
    {
super.paintComponent(g);
 
g.setColor(Color.black);
g.drawString("Directory: c:\\video \n",20,300);
      g.drawString("File: test"+count+"_time_"+A+".jpg\n",20,313);
      g.drawString("Date: "+A+" (yyyy-mm-dd / hh:mm:ss)\n",20,326);
      g.drawString("Movie Frame Length:"+count+"\n",20,339);
 

    }
  
  public static void main(String[] args) 
  {
    Frame f = new Frame("JF Security Plus");
    SwingCapture cf = new SwingCapture();
    
    f.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
      playerclose();
      System.exit(0);}});
    
    f.add("Center",cf);
    f.pack();
    f.setSize(new Dimension(520,400));
    f.setVisible(true);
  }
  
  
  public static void playerclose() 
  {
    player.close();
    player.deallocate();
  }
  
 
  public void actionPerformed(ActionEvent e) 
  {
    JComponent c = (JComponent) e.getSource();
    stop = true;
    if (c == capture) 
    {
      // Grab a frame
      count = 0;
      while(stop){
 
    Calendar cal = Calendar.getInstance();
    SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW);
    A = sdf.format(cal.getTime());

      try {recorder.delay(2250);}catch(Exception a){}
      count++;
      FrameGrabbingControl fgc = (FrameGrabbingControl)
      player.getControl("javax.media.control.FrameGrabbingControl");
      buf = fgc.grabFrame();
      
 
      // Convert it to an image
      btoi = new BufferToImage((VideoFormat)buf.getFormat());
      img = btoi.createImage(buf);
      
      // show the image
      //imgpanel.setImage(img);
      
      // save image
 

      System.out.println("c:\\video\\test"+count+"_time_"+A+".jpg");
 
      saveJPG(img,"c:\\video\\test"+count+"_time_"+A+".jpg");
     }
    }
  }
  
 
  
 
  public static void saveJPG(Image img, String s)
  {
    BufferedImage bi = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
    Graphics2D g2 = bi.createGraphics();
    g2.drawImage(img, null, null);
 
    FileOutputStream out = null;
    try
    { 
      out = new FileOutputStream(s); 
    }
    catch (java.io.FileNotFoundException io)
    { 
      System.out.println("File Not Found"); 
    }
    
    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
    JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
    param.setQuality(0.75f,true);
    encoder.setJPEGEncodeParam(param);
    
    try 
    { 
      encoder.encode(bi); 
      out.close(); 
    }
    catch (java.io.IOException io) 
    {
      System.out.println("IOException"); 
    }
  }
 
   public class pause extends Thread implements ActionListener{
 
public pause()
{
run();
}
 
public void run(){
 
while(true){}
 

}
 
public void actionPerformed(ActionEvent e)
{
if(e.getSource() == pause)
stop = false;
}
 
   }
 

  
}