camdatasource.java

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package jp.sourceforge.qrcode.example.jmf;

   import java.io.*;
   import java.util.*;
   import java.awt.Component;
import java.awt.Dimension;

   import javax.swing.JOptionPane;
   import javax.media.*;
   import javax.media.protocol.*;
import javax.media.format.VideoFormat;

import jmapps.util.JMFUtils;

   public class camDataSource {
       
       private Component parent;
       
       private DataSource mainCamSource;
       private MediaLocator ml;
       private Processor processor;
       private boolean processing;
       
       public camDataSource(Component parent) {
           this.parent = parent;
           setProcessing(false);
       }
       
       public void setMainSource(){
           setProcessing(false);
           VideoFormat vidformat = new VideoFormat(VideoFormat.RGB);
           Vector devices = CaptureDeviceManager.getDeviceList(vidformat);
           CaptureDeviceInfo di = null;
           if (devices.size() > 0) {
        	   di = (CaptureDeviceInfo) devices.elementAt(0);
           }
           else {
               JOptionPane.showMessageDialog(parent, 
                  "Your camera is not connected", "No webcam found", JOptionPane.WARNING_MESSAGE);
       return;
   }
  
   try {
       ml = di.getLocator();
       setMainCamSource(Manager.createDataSource(ml));
       // for VGA size capture (on my envirionment)
/*   		setMainCamSource(JMFUtils.createCaptureDataSource(null, null, 
		   "vfw:Microsoft WDM Image Capture (Win32):0", 
		   di.getFormats()[di.getFormats().length-1]));
*/
   } catch (Exception e) {
       JOptionPane.showMessageDialog(parent, 
          "Exception locating media: " + e.getMessage(), "Error", JOptionPane.WARNING_MESSAGE);
           return;
       }
   }
   
   public void makeDataSourceCloneable(){
       // turn our data source to a cloneable data source
       setMainCamSource(Manager.createCloneableDataSource(getMainCamSource()));
       
   }
   
   public void startProcessing(){
       
       try{
           processor = Manager.createProcessor(getMainCamSource());
       }catch (IOException e) {
           JOptionPane.showMessageDialog(parent, 
              "IO Exception creating processor: " + e.getMessage(), "Error", JOptionPane.WARNING_MESSAGE);
       return;
   }catch (NoProcessorException e) {
       JOptionPane.showMessageDialog(parent, 
          "Exception creating processor: " + e.getMessage(), "Error", JOptionPane.WARNING_MESSAGE);
       return;
   }
   
   camStateHelper playhelper = new camStateHelper(processor);
   if(!playhelper.configure(10000)){
       JOptionPane.showMessageDialog(parent, 
          "cannot configure processor", "Error", JOptionPane.WARNING_MESSAGE);
       return;
   }
   processor.setContentDescriptor(null);
   if(!playhelper.realize(10000)){
       JOptionPane.showMessageDialog(parent, 
          "cannot realize processor", "Error", JOptionPane.WARNING_MESSAGE);
       return;
   }
  // In order for or your clones to start, you must start the original source
           processor.start();
           setProcessing(true);
       }
       
       public DataSource cloneCamSource(){
           if(!getProcessing()) setMainSource();
           return ((SourceCloneable)getMainCamSource()).createClone();
       }
       
       public DataSource getMainCamSource(){
           return mainCamSource;
       }
       
       public void setMainCamSource(DataSource mainCamSource){
           this.mainCamSource = mainCamSource;
       }
       
       public void setMl(MediaLocator ml){
           this.ml = ml;
       }
       
       public MediaLocator getMl(){
           return ml;
       }
       
       public boolean getProcessing(){
           return processing;
       }
       
       public void setProcessing(boolean processing){
           this.processing = processing;
           
       }
       
       public void setParent(Component parent){
           this.parent = parent;
       }
       
       public Component getParent(){
           return parent;
       }
   }