jmf语音视频流抓取

package seu.mcs.client.media;
/** *//**
 * 
 * @author leeo
 *@todo : Capturing the local audio/vidio data 
 *        Translate them to specified address(Address : port)
 *        
 *
 */

import javax.media.rtp.*;
import javax.media.*;
import javax.media.protocol.*;
import javax.media.control.FormatControl;
import javax.media.control.TrackControl;
import javax.media.format.*;

import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.*;



public class TransmitController ...{
    
    private CaptureDeviceInfo captureVideoDevice = null;
    private CaptureDeviceInfo captureAudioDevice = null;
    private Processor videoProcessor = null;
    private Processor audioProcessor = null;
    private DataSource videoDataSource = null;
    private DataSource audioDataSource = null;
    //private SessionManager videoRtpsm = null;
    //private SessionManager audioRtpsm = null;
    private RTPManager videortpManager = null;
    private RTPManager audiortpManager = null;
    private SendStream videoRtpstream = null;
    private SendStream audioRtpstream = null;
    //private SessionManager mgr = null;
    private Vector sendplayerlist = new Vector();
    private boolean terminatedbyClose_sender= false;
    private SessionAddress remoteAddress1 = null;
    private SessionAddress remoteAddress2= null;

    private void getDeviceInfo()...{
          // Get the VideoCaptureDeviceInfo for the live video capture device
          // initialize the CaptureDeviceInfo
        Vector deviceList = null;
        deviceList = CaptureDeviceManager.getDeviceList(null);
        for(int i = 0; i < deviceList.size(); i ++)...{
                captureVideoDevice = (CaptureDeviceInfo)deviceList.elementAt(i);
                String name = captureVideoDevice.getName();
                if(name.startsWith("vfw:"))                   break;
        }
       // Get the AudioCaptureDeviceInfo for the live audio capture device
        deviceList=null;
        deviceList = CaptureDeviceManager.getDeviceList(new AudioFormat("linear", 8000, 8, 1));

        if (deviceList.size() > 0)
                captureAudioDevice = (CaptureDeviceInfo)deviceList.elementAt(0);
        else...{
        // Exit if we can't find a device that does linear, 8000 Hz, 8 bit, stereo audio.
                 System.err.println("Device initializing failure!");  
                 System.exit(-1);
        }
        
    }
    
      private void setDataSource() throws IOException,NoProcessorException,
                CannotRealizeException, NoDataSinkException...{
        DataSource ds = null;
        TrackControl track[] = null;
        //Create a video processor for capturevideodevice & exit if we cannot create it
       try...{
                        ds = Manager.createDataSource(captureVideoDevice.getLocator());
        } catch(Exception e) ...{ e.printStackTrace(); }

        try ...{
                        videoProcessor = Manager.createProcessor(ds);
        } catch(Exception e) ...{ e.printStackTrace(); }

        
        videoProcessor.configure();
        // block until it has been configured
          while(true) ...{
                 if(videoProcessor.getState() == videoProcessor.Configured) ...{
                       break;
                 }
                  try ...{
                           this.wait(100);
                  } catch (Exception e) ...{}
          }

        videoProcessor.setContentDescriptor(new ContentDescriptor(ContentDescriptor.RAW));
         track = videoProcessor.getTrackControls();

        boolean encodingOk = false;

        // Go through the tracks and try to program one of them to
        // output ULAW_RTP data.
        for (int i = 0; i < track.length; i++) ...{
             if (!encodingOk && track[i] instanceof FormatControl) ...{
                  if (((FormatControl)track[i]).setFormat(new VideoFormat(VideoFormat.JPEG_RTP)) == null) ...{
                      track[i].setEnabled(false);
                  }
                  else ...{
                     encodingOk = true;
                  }
              } else ...{
                 // we could not set this track to gsm, so disable it
                 track[i].setEnabled(false);
              }
         }
        
                videoProcessor.realize();
       // block until it has been configured
                while(true) ...{
                        if(videoProcessor.getState() == videoProcessor.Realized) ...{
                                break;
                        }
                        try ...{
                                this.wait(100);
                        } catch (Exception e) ...{}
                }

                try ...{
                        videoDataSource = videoProcessor.getDataOutput();
                } catch (NotRealizedError e)...{
                        System.exit(-1);
                }

        // Create a audio processor for captureaudiodevice & exit if we
        // cannot create it
                try    ...{
                        ds = Manager.createDataSource(captureAudioDevice.getLocator());
                } catch(Exception e) ...{e.printStackTrace();}

                try ...{
                        audioProcessor = Manager.createProcessor(ds);
                } catch(Exception e) ...{e.printStackTrace();}

         audioProcessor.configure();
       // block until it has been configured
                while(true) ...{
                        if(audioProcessor.getState() == audioProcessor.Configured) ...{
                                break;
                        }
                        try ...{
                                this.wait(100);
                        } catch (Exception e) ...{}
                }

                audioProcessor.setContentDescriptor(new ContentDescriptor(ContentDescriptor.RAW));

                track = audioProcessor.getTrackControls();

        boolean encodingOk1 = false;

        // Go through the tracks and try to program one of them to
        // output ULAW_RTP data.
        for (int i = 0; i < track.length; i++) ...{
                  if (!encodingOk1 && track[i] instanceof FormatControl) ...{
                          if (((FormatControl)track[i]).setFormat(new AudioFormat(AudioFormat.ULAW_RTP,
                                                8000,
                                                8,
                                                1)) == null) ...{

                    track[i].setEnabled(false);
                 }
                 else ...{
                     encodingOk1 = true;
                 }
             } else ...{
                 // we could not set this track to gsm, so disable it
                 track[i].setEnabled(false);
             }
         }

        // Realize it and block until it is realized.
                audioProcessor.realize();

                // block until it has been configured
                while(true) ...{
                        if(audioProcessor.getState() == audioProcessor.Realized) ...{
                                break;
                        }
                        try ...{
                                this.wait(100);
                        } catch (Exception e) ...{}
                }

                try ...{
                        audioDataSource = audioProcessor.getDataOutput();
                } catch (NotRealizedError e)...{
                        System.exit(-1);
                }
        
    }
    
    public void transmitStart(String targetAddress ,String targetPort)...{
        videortpManager = RTPManager.newInstance();
        audiortpManager = RTPManager.newInstance();
        SessionAddress localAddress1 = null;
        SessionAddress localAddress2 = null;

        

        // create the local endpoint for the local interface on any local port
        localAddress1= new SessionAddress();
        localAddress2= new SessionAddress();
       

        try ...{
                videortpManager.initialize(localAddress1);
                audiortpManager.initialize(localAddress2);
        } catch(IOException e) ...{
                System.out.println(e.getMessage());
                e.printStackTrace();
        } catch(InvalidSessionAddressException e) ...{
                e.printStackTrace();
        }

        // specify the remote endpoint of this unicast session
        try ...{
                InetAddress ipAddress = InetAddress.getByName(targetAddress);
                remoteAddress1 = new SessionAddress(ipAddress, Integer.parseInt(targetPort));
                videortpManager.addTarget(remoteAddress1);
                remoteAddress2 = new SessionAddress(ipAddress, Integer.parseInt(targetPort)+2);
                audiortpManager.addTarget(remoteAddress2);

               

                System.out.println();
                System.out.println("data address     " + localAddress1.getDataAddress());
                System.out.println("contorl address  " + localAddress1.getControlAddress());
                System.out.println("data port        " + localAddress1.getDataPort());
                System.out.println("control port     " + localAddress1.getControlPort());
                System.out.println();
                System.out.println("data address     " + localAddress2.getDataAddress());
                System.out.println("contorl address  " + localAddress2.getControlAddress());
                System.out.println("data port        " + localAddress2.getDataPort());
                System.out.println("control port     " + localAddress2.getControlPort());
                System.out.println();
        }catch(UnknownHostException e) ...{
           e.printStackTrace();
        }catch(InvalidSessionAddressException e) ...{
                e.printStackTrace();
        }catch(IOException e) ...{
                e.printStackTrace();
        }

        try ...{
                videoRtpstream = videortpManager.createSendStream(videoDataSource,0);
                audioRtpstream = audiortpManager.createSendStream(audioDataSource,0);
        } catch(IOException e) ...{
                e.printStackTrace();
        } catch (UnsupportedFormatException e) ...{
        // TODO Auto-generated catch block
                e.printStackTrace();
        }

        try ...{
                videoProcessor.start();
                audioProcessor.start();
                videoRtpstream.start();
                audioRtpstream.start();
        } catch (IOException e) ...{
                // TODO Auto-generated catch block
                e.printStackTrace();
        }
        
    }
    
  public void transmitStop() throws IOException ...{

        try ...{
                videoRtpstream.stop();
                videoRtpstream.close();
                videoProcessor.stop();
                audioRtpstream.stop();
                audioRtpstream.close();
                audioProcessor.close();

                // close the connection if no longer needed.
                videortpManager.removeTarget(remoteAddress1, "client disconnected.");
               
                audiortpManager.removeTarget(remoteAddress2, "client disconnected.");
               

                // call dispose at the end of the life-cycle of this RTPManager so
                // it is prepared to be garbage-collected.
                
                videortpManager.dispose();
                audiortpManager.dispose();
                
                System.out.println("Now releasing the resource!");
                videoProcessor.deallocate();
                audioProcessor.deallocate();
                videoDataSource.disconnect();
                audioDataSource.disconnect();
               
   } catch (Exception e) ...{e.printStackTrace();}
}

    
    public TransmitController()...{
    //initilizing the devices and ready for transmmit
           getDeviceInfo();
           
       try...{
       setDataSource();
            }catch(IOException e)...{e.printStackTrace();} catch (NoProcessorException e) ...{
        // TODO Auto-generated catch block
    e.printStackTrace();
           } catch (CannotRealizeException e) ...{
            // TODO Auto-generated catch block
            e.printStackTrace();
           } catch (NoDataSinkException e) ...{
            // TODO Auto-generated catch block
            e.printStackTrace();
          }
            
           
        
  }

}