Question

我正在尝试用java中的RPi相机做直播，但是我有问题，因为我在这种编程方面很新，并且没有找到能够帮助我解决这个问题的答案。

我从此页面获得了我的服务器应用程序：enter link description here

它适用于.NET，但我想用Java完成整个事情（在我的情况下是UDP版本）。我正在关注enter link description here的文档，但它仍然无效。

以下是我的客户端应用代码：

public class CamService {

public static IDuplexOutputChannel myVideoChannel;
public static String StreamAddr = "udp://192.168.0.145:8093/";
public static OutputStream myVideoStream;
public static BufferedOutputStream bOut;
public static String pName;

public static void main(String[] args) throws Exception {


    JFrame frame;
    EmbeddedMediaPlayerComponent mediaPlayerComponent;

    new NativeDiscovery().discover();
    NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), "c:\\program files (x86)\\videolan\\vlc\\");
    Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(), LibVlc.class);

    IMessagingSystemFactory aMessaging = new UdpMessagingSystemFactory();


    myVideoChannel = aMessaging.createDuplexOutputChannel(StreamAddr);  
    myVideoChannel.responseMessageReceived().subscribe(myOnResponseMessageReceived);


    frame = new JFrame("AWWWW!");
    frame.setBounds(100, 100, 600, 400);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    mediaPlayerComponent = new EmbeddedMediaPlayerComponent();



    frame.addWindowListener(new WindowAdapter() {
        @Override
        public void windowClosing(WindowEvent e) {
            mediaPlayerComponent.release();
            myVideoChannel.closeConnection();
            System.exit(0);
        }
    });      

    frame.setContentPane(mediaPlayerComponent);
    frame.setVisible(true);
    String[] mediaOptions = { 
            ":sout=#transcode{vcodec=h264,venc=x264{preset=ultrafast},vb=512 }"
          + ":std{access=udp,mux=ts}"  };
    Media media = new SimpleMedia(StreamAddr, mediaOptions);
    mediaPlayerComponent.getMediaPlayer().playMedia(media);

    myVideoChannel.openConnection();
}

private static void onResponseMessageReceived(Object sender, DuplexChannelMessageEventArgs e) throws IOException 
 {

    byte[] aMessage = (byte[])e.getMessage();
    System.out.println("Byte message: " + aMessage);

    myVideoStream.write(aMessage, 0, aMessage.length);  
    bOut = new BufferedOutputStream(myVideoStream);

    System.out.println("Buffered Output: " + myVideoStream);
 }
private static EventHandler<DuplexChannelMessageEventArgs> myOnResponseMessageReceived = new EventHandler<DuplexChannelMessageEventArgs>()
 { 
     @Override       
     public void onEvent(Object sender, DuplexChannelMessageEventArgs e)
     {
        try {
            onResponseMessageReceived(sender, e);
        } catch (IOException e1) {
            System.out.println("NOPE");
                    e1.printStackTrace();
        }           

     }
 };

}

编译时我没有收到任何错误。它连接到服务器，打开相机，但它没有流。关闭程序后我得到了：

主流错误：无法预先填充缓冲区

非常感谢任何帮助。感谢。

使用JAVA的RPi摄像头的客户端 - 服务器直播流

0 个答案: