audio device not detected in windows 7 64bit OS using JMF

[elangesw aran]

Hi all,

I am working on JMF audio capture program and it is working fine on windows xp. But the same code part not working
in the windows7 64bit Operating System(Home Basics).

I have installed JMF on the system. My JRE version is "1.6.0_18".

The below program gives the output in windows7 64bit system as follows :

audList.size() :: 0


The java code :

 

import java.io.IOException;
import java.net.InetAddress;
import java.util.Hashtable;
import java.util.Vector;

import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Controller;
import javax.media.Format;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.NoProcessorException;
import javax.media.Processor;
import javax.media.control.TrackControl;
import javax.media.format.AudioFormat;
import javax.media.format.VideoFormat;
import javax.media.protocol.ContentDescriptor;
import javax.media.protocol.DataSource;
import javax.media.rtp.RTPManager;
import javax.media.rtp.SendStream;
import javax.media.rtp.SessionAddress;


public class CaptureDevice {
	Processor audProc = null;
	Processor vidProc = null;
	
	RTPManager rtpMgrVid = null;
	RTPManager rtpMgrAud = null;
	Hashtable vidSessions = null;
	Hashtable audSessions = null;
	boolean vid_enabled = false;
	boolean aud_enabled = false;

	public static void main(String args[]){
		new CaptureDevice();
	}
	
	public CaptureDevice(){
		createAudioStream();
	}


	private void createAudioStream(){
		try{
			// okay set up our capture device to use, get the MediaLocator
			CaptureDeviceInfo audDev = null;
			Vector audList = CaptureDeviceManager.getDeviceList(new AudioFormat(null)); // Raw audio
			//Vector audList = CaptureDeviceManager.getDeviceList(new AudioFormat(null)); // Raw audio
			System.out.println(" audList.size()  :: "+audList.size());
			if(audList.size() > 0){
				audDev = (CaptureDeviceInfo) audList.firstElement();
				System.err.println("Audio using " + audDev.getName());
				audProc = Manager.createProcessor(audDev.getLocator());
				audProc.configure();
				while(audProc.getState() != Processor.Configured); // Wait till processor is configured
				// Ok need to program the tracks for rtp stream output

				TrackControl tkCtls[] = audProc.getTrackControls();
				if(tkCtls.length == 0)
					throw new Exception(); // No tracks.. something is wrong with device.
				TrackControl track = tkCtls[0]; // Only want the single track.
				ContentDescriptor content = new ContentDescriptor(ContentDescriptor.RAW);
				Format tkFmt = track.getFormat();
				track.setFormat(new AudioFormat(AudioFormat.G723_RTP, 8000, 8, 1));
				tkFmt = track.getFormat();
				// Time to start the processor ready to get its DataSource
				audProc.start();
				while(audProc.getState() != Controller.Started);
				rtpMgrAud = RTPManager.newInstance();
				SessionAddress audAddr = new SessionAddress(InetAddress.getLocalHost(), 2000);
				rtpMgrAud.initialize(audAddr);
				rtpMgrAud.addTarget(new SessionAddress(InetAddress.getLocalHost(),2002));
				DataSource audds = audProc.getDataOutput();
				SendStream ssAud = rtpMgrAud.createSendStream(audds, 0);
				ssAud.start();
			//	System.err.println("Audio stream configured and streaming on " + InetAddress.getLocalHost().getHostAddress() + ":" + AudioVideo.AudServerPort);
				aud_enabled = true;
			}
			else
				throw new Exception();
		}catch(Exception e){
			aud_enabled = false;
			if(audProc != null){
				audProc.close();
				audProc = null;
			}
			if(rtpMgrAud != null){
				rtpMgrAud.dispose();
				rtpMgrAud = null;
			}
			System.err.print("Audio!! Failed to create audio stream, ");
			if(e instanceof IOException)
				System.err.println("couldn't connect to device.");
			else if(e instanceof NoProcessorException)
				System.err.println("no processor could be found to handle input.");
			else
				System.err.println("no audio capture devices found or usable.");
		}
	}

}

Is there any privilege problem on windows7 or JRE related issue. Kindly provide your solution to fix this problem.


Thanks in Advance,
K.Elanges