Need help writing non-gui JMF program

Question

I need to write a program that will convert a WAV file from a ULAW format to a GSM WAV file format. I first tried this with the Java Sound API and the WAV file format of GSM was not supported so I stumbled across JMF.
I can use the JMStudio and Export GUI programs that come with JMF to convert the wav file as needed. But now I'm trying to write a batch program (non-gui) to convert the file on the fly.
First, is this possible. Second, does anyone have any code samples of a batch java program using JMF in batch.
Thanks,
Scott

Answer 1

Not exactly what I was looking for. After 2 days of beating my head against the wall this is what I got to work. Include the jmf.jar in my project. Here is my code.
import java.io.IOException;
import javax.media.DataSink;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.NoDataSourceException;
import javax.media.Processor;
import javax.media.control.TrackControl;
import javax.media.format.AudioFormat;
import javax.media.protocol.DataSource;
import javax.media.protocol.FileTypeDescriptor;
import jmapps.util.StateHelper;
public class TestAudio5 {
     public static void main(String[] args) {
          try {
               Processor p = null;
               StateHelper sh = null;
               DataSource inSource = Manager.createDataSource(
                         new MediaLocator("file:c:\\ASSURANCE_THREE_MINUTE.wav"));
               p = Manager.createProcessor(inSource);
               sh = new StateHelper(p);
//               Configure the processor
               if (!sh.configure(10000)) {
                         System.out.println("can't configure");
                    System.exit(-1);
               p.setContentDescriptor(new
                                   FileTypeDescriptor(FileTypeDescriptor.WAVE));
               //AudioFormat(java.lang.String encoding, double sampleRate, int sampleSizeInBits, int channels)
               //AudioFormat(
               //          java.lang.String encoding,
               //          double sampleRate,
               //          int sampleSizeInBits,
               //          int channels,
               //          int endian,
               //          int signed,
               //          int frameSizeInBits,
               //          double frameRate,
               //          java.lang.Class dataType)
               AudioFormat outputFormat = new javax.media.format.AudioFormat(
                                        AudioFormat.GSM_MS,
                                        8000.0,
                                        0,
                                        1,
                                        0,
                                        1,
                                        520,
                                        1625.0,
                                        null);
               System.out.println("outputFormat: " + outputFormat.toString());
               TrackControl tc[] = p.getTrackControls();
               for ( int i = 0; i < tc.length; i++ ) {
                    tc.setEnabled(true);
                    System.out.println("before format: " + tc[i].getFormat().toString());
                    tc[i].setFormat(outputFormat);
                    System.out.println("after format: " + tc[i].getFormat().toString());
               if (!sh.realize(10000)) {
                                   System.out.println("can't realize");
                                   System.exit(-1);
               // get the output of the processor
               DataSource source = p.getDataOutput();
               // create a File protocol MediaLocator with the location
               // of the file to which bits are to be written
               MediaLocator dest = new MediaLocator("file://c:\\test.wav");
               // create a datasink to do the file writing & open the
               // sink to make sure we can write to it.
               DataSink filewriter = null;
               filewriter = Manager.createDataSink(source, dest);
               filewriter.open();
               // now start the filewriter and processor
               filewriter.start();
               sh.playToEndOfMedia(5000);
               sh.close();
               filewriter.close();
          } catch (NoDataSourceException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          catch (Exception e) {
                         // TODO Auto-generated catch block
               e.printStackTrace();
          System.out.println("done!");
          System.exit(-1);