Question

晚上好，我正在实施一个在同一台计算机上运行2 rtp会话的JMF项目。 rtp会话可以初始化和启动，但是如何中断其中一个。而不是在同一台计算机上不运行2 rtp会话，JMF是否有办法中断/保持rtp会话？这些信息有一些代码。

transmitA和transmitB几乎是从本地计算机获取LINEAR声音并将其转换为GSM_RTP或ULAW_RTP的相同代码，只有传输端口不相同。最后将mediaLocator数据链接到另一台计算机。

Thread transmitA = new Thread() {
        public void run() {

            transmitA();
        }
    };

        Thread transmitB = new Thread() {
        public void run() {

            transmitB();
        }
    };

中断条件

transmitA.start();
trasmitB.start();

while (...) {

       if (...) {

           //interrupt transmitA
           transmitA.interrupt();
           transmitA.stop();

           } /*else if (...) {
                       //interrupt transmitB
                       transmitB.interrupt();
                       transmitB.stop();
                     }*/                      
            }//notation end here

好吧，中断线程与中断rtp会话不一样。如何中断或只是将一个rtp会话传输到另一台计算机？我会在赛道上做点什么吗？还是处理器？

transmitA（）

public void transmitA(){

        // First find a capture device that will capture linear audio
        // data at 8bit 8Khz 
        AudioFormat format= new AudioFormat(AudioFormat.LINEAR, 
                                            8000, 
                                            8, 
                                            1); 

        Vector devices= CaptureDeviceManager.getDeviceList( format);

        CaptureDeviceInfo di= null;

        if (devices.size() > 0) {
             di = (CaptureDeviceInfo) devices.elementAt( 0);
        }
        else {
            // exit if we could not find the relevant capturedevice. 
            System.exit(-1); 
        }

        // Create a processor for this capturedevice & exit if we 
        // cannot create it 
        Processor processor = null;
        try { 
                processor = Manager.createProcessor(di.getLocator());
        } catch (IOException e) { 
            System.exit(-1); 
        } catch (NoProcessorException e) { 
            System.exit(-1); 
        } 

       // configure the processor  
       processor.configure(); 

       while (processor.getState() != Processor.Configured){
           try {
                   Thread.sleep(100);
           } catch (InterruptedException e) {
                   // TODO Auto-generated catch block
                   e.printStackTrace();
           }
       }

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

       TrackControl track[] = processor.getTrackControls(); 

       boolean encodingOk = false;

       // Go through the tracks and try to program one of them to
       // output gsm data. 

        for (int i = 0; i < track.length; i++) { 
            if (!encodingOk && track[i] instanceof FormatControl) {  
                if (((FormatControl)track[i]).
                    setFormat( new AudioFormat(AudioFormat.GSM_RTP, 
                                               8000, 
                                               8, 
                                               1)) == null) {

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

        // At this point, we have determined where we can send out 
        // gsm data or not. 
        // realize the processor 
        if (encodingOk) { 
            processor.realize(); 
            while (processor.getState() != Processor.Realized){
                   try {
                           Thread.sleep(100);
                   } catch (InterruptedException e) {
                           // TODO Auto-generated catch block
                           e.printStackTrace();
                   }
            }
            // get the output datasource of the processor and exit 
            // if we fail 
            DataSource ds = null;

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

            // hand this datasource to manager for creating an RTP 
            // datasink our RTP datasink will multicast the audio 
            try {
                String url= "rtp://192.168.1.3:22222/audio/16";
                //String url= "rtp://224.0.0.1:22224/audio/16";
                MediaLocator m = new MediaLocator(url); 

                DataSink d = Manager.createDataSink(ds, m);
                d.open();
                d.start();
                processor.start();
            } catch (Exception e) {
                System.out.println("cannot find the receiver address!!!");
                System.exit(-1);
            }     
        } 
    }

需要一些提示和指导，感谢先进的^^“

Answer 1

经过尝试和尝试，我终于做到了...... 刚删除线程并直接使用该方法，我不知道它是否是一个很好的编程习惯，但是任何建议都会非常感激......

private DataSink d = null;
private Processor processor = null;

while (...) {
   if (...) {

       //interrupt transmitA
       processor.stop();
       processor.close();
       processor.deallocate();
       processor = null;
       d.close();
       d = null;
       transmitA();

       } /*else if (...) {
                   //interrupt transmitB
                   processor.stop();
                   processor.close();
                   processor.deallocate();
                   processor = null;
                   d.close();
                   d = null;
                   transmitB.stop();
                 }*/                      
        }//notation end here

如何在JMF中断音频rtp会话？

1 个答案: