Problem with recording in server

[jagadish Regonda]

Hiii..
I developed a small web application for recording audio in server.
in my jsp two buttons called as Record and stop.whenever i clicked on record it will create a .wav file(what ever file ext.)in server(i.e where the server is running,currently am using tomcat)and it will record what ever i talk and stop it will stop
So my problem is i click on Record it will create a .wav file in server but it unable to record the voice in to tht file.

i done using temp.buffer it also unable to record and play the file

sample code

  private AudioFileFormat.Type fileType = AudioFileFormat.Type.WAVE;
 

 
public void captureAudio() {
    try {
      final AudioFormat format = getFormat();
      DataLine.Info info = new DataLine.Info(
        TargetDataLine.class, format);
      final TargetDataLine line = (TargetDataLine)
        AudioSystem.getLine(info);
      line.open(format);
      line.start();
      Runnable runner = new Runnable() {
        int bufferSize = (int)format.getSampleRate() 
          * format.getFrameSize();
        byte buffer[] = new byte[bufferSize];
 
        public void run() {
          out = new ByteArrayOutputStream();
          running = true;
          try {
            while (running) {
              int count = 
                line.read(buffer, 0, buffer.length);
              if (count > 0) {
                out.write(buffer, 0, count);
System.out.println(buffer.length);
              }
            }
System.out.println("am in captured");
            out.close();
          } catch (IOException e) {
            System.err.println("I/O problems: " + e);
   
          }
        }
      };
      Thread captureThread = new Thread(runner);
      captureThread.start();
    } catch (LineUnavailableException e) {
      System.err.println("Line unavailable: " + e);
      System.exit(-2);
    }
  }
 public void stopAudio()
  {
   
  running = false;
 
  // currentDir = new File( "/Record"); // Get current directory
   }
   
   //Return the recorded file
   public File getFile()
 {
   try
   {
   soundFileName = filename + (filenameSuffix++) + 
                                        '.' + fileType.getExtension();
        fileOut = new File(soundFileName);
FileOutputStream fos = new FileOutputStream (fileOut);
      
      DataOutputStream dos = new DataOutputStream (fos);
 
System.out.println("vxcvxcv"+fileOut);
 System.out.println("am in stop dfsgdfgdfg"+fileOut);
   }
   catch (Exception e)
   {
   }
return fileOut;
   }
 

//Play the captured Audio
  public void playAudio() {
  System.out.println("am in play");
    try {
      byte audio[] = out.toByteArray();
      InputStream input = 
        new ByteArrayInputStream(audio);
      final AudioFormat format = getFormat();
      final AudioInputStream ais = 
        new AudioInputStream(input, format, 
        audio.length / format.getFrameSize());
      DataLine.Info info = new DataLine.Info(
        SourceDataLine.class, format);
      final SourceDataLine line = (SourceDataLine)
        AudioSystem.getLine(info);
      line.open(format);
      line.start();
 
      Runnable runner = new Runnable() {
        int bufferSize = (int) format.getSampleRate() 
          * format.getFrameSize();
        byte buffer[] = new byte[bufferSize];
 
        public void run() {
          try {
            int count;
            while ((count = ais.read(
                buffer, 0, buffer.length)) != -1) {
              if (count > 0) {
                line.write(buffer, 0, count);
              }
            }
            line.drain();
            line.close();
          } catch (IOException e) {
            System.err.println("I/O problems: " + e);
            System.exit(-3);
          }
        }
      };
      Thread playThread = new Thread(runner);
      playThread.start();
    } catch (LineUnavailableException e) {
      System.err.println("Line unavailable: " + e);
      System.exit(-4);
    } 
  }
 
  public AudioFormat getFormat() {
    float sampleRate = 8000;
    int sampleSizeInBits = 8;
    int channels = 1;
    boolean signed = true;
    boolean bigEndian = true;
    return new AudioFormat(sampleRate, 
      sampleSizeInBits, channels, signed, bigEndian);
  }  

is there any problem with streaming with tomcat or in jsp is there any contenttype
jst suggest the help


thanks in advance

[pascal betz]

I hope i did not get you wrong!
you can not record sound trough a Browser (the JSP will be HTML on the client) unless you have some active code (maybe Active X, Flash, Applet ?).

The JSP is translated to a .javav file and this is translated to a .class file.
Upon request the JSP code is executed on the server and the output is sent to the client. Usually the output of the servlet is HTML, but you can also send other content types to the client.


pascal
[ November 02, 2006: Message edited by: pascal betz ]

[jagadish Regonda]

Tx,But from applet can we create a file in server and record the file
can any one suggest how to do
tx in advance

[pascal betz]

The first thing to do is to record the sound on the client (still, if i got you right). i never did sound recording with java...but i would try following:

- create a simple application that records /plays sound on the local machine, no web no server involved here.
- if this is working, try to convert it to an applet (probably includes signing the applet and required libs for accessing file system, sound resources).
- if this works make the applet send the data to a server. this is just bytes. and there is nothing restricting an applet communicating with the server it was loaded from (again, if you need to sign it anyway, then you can send the data to whereever you want if you get the permission from the user)


pascal

[jagadish Regonda]

Tx,i already done in applet it's working fine. but whenever i clicked on record it will create a file in server and store in to tht file
give me suggestions

tx in advance