URGENT- problem in detecting audio device using JMF in WIndows7 - 64 bit

Question

Hi,
I am trying to detect the audio device in windows 7 -64 bit OS, using JMF API with JRE 1.6.18.But it showing zero device found.below i have mentioned the source code that i have used.please suggest how to solve this , thanks in advance.
import java.util.ArrayList;
import java.util.Vector;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.format.AudioFormat;
import javax.media.format.VideoFormat;
public class CaptureDeviceFinder {
//possible audio formats available
static String audioformats[] = {
AudioFormat.LINEAR };
static ArrayList available_audiolist= new ArrayList();
public static void main(String[] args) {
findAudioDevices();
}//main
public static void findAudioDevices() {
/ Audio capture devices /
System.out.println("CAPTURE AUDIO FORMATS:");
for (String format : audioformats) {
System.out.println("format is :"format);
Vector<CaptureDeviceInfo> devices = CaptureDeviceManager
.getDeviceList(new AudioFormat(format));
System.out.println("devices is"+devices);
for (CaptureDeviceInfo device : devices) {
if (!devices.isEmpty()) {
System.out.println("\tFormat: " format);
System.out.println("\t\t" device.getName());
available_audiolist.add(format"|"+device.getName());
System.out.println("list is :"+available_audiolist);
Edited by: Saravana4u on Mar 17, 2010 10:39 AM

Answer 1

almightywiz wrote:
Well, I don't know if the JMF Studio works on a 64-bit system, but the base java libraries work just as well as on a 32-bit system. I currently use both Windows 7 64-bit and 32-bit version, and I am able to recognize all of my audio input devices.JMF wraps around and makes use of a bunch of native interfaces, all of which are precompiled for 32-bit systems. As such, anything relying upon those 32-bit libraries will not work, and that cuts the functionality down to, essentially, the cross-platform pack stuff.
JMF's sound infastructure is mostly a wrapper around JavaSound, so as long as JavaSound is working on the JRE, you'll be able to utilize the audio functionality.
As for device detection, I know at least some of that is native code. I'm not 100% sure, but I'd almost expect the Windows performance pack to never return any devices on a 64-bit system, but the cross-platform back to return audio devices. This is an assumption, but, that's what I would expect.
In any case, if you're using the Windows performance pack, you'd most likely get better results by switching to the cross-platform pack.