• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Tim Cooke
  • Devaka Cooray
  • Ron McLeod
  • Jeanne Boyarsky
Sheriffs:
  • Liutauras Vilda
  • paul wheaton
  • Junilu Lacar
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Piet Souris
  • Carey Brown
  • Tim Holloway
Bartenders:
  • Martijn Verburg
  • Frits Walraven
  • Himai Minh

Need help writing non-gui JMF program

 
Greenhorn
Posts: 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
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
 
Scott Wade
Greenhorn
Posts: 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I figured it out. Include the JMF.jar in your project and here is the 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[i].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);
}
}
 
To avoid criticism do nothing, say nothing, be nothing. -Elbert Hubbard. Please critique this tiny ad:
the value of filler advertising in 2021
https://coderanch.com/t/730886/filler-advertising
reply
    Bookmark Topic Watch Topic
  • New Topic