// --- cut from here... --- //
// Find a capture device that will capture linear audio
// data at 8bit 8Khz
AudioFormat format = new AudioFormat(AudioFormat.LINEAR,
8000,
8,
1);
Vector devices= CaptureDeviceManager.getDeviceList( format);
CaptureDeviceInfo di= null;
if (devices.size() > 0) {
di = (CaptureDeviceInfo) devices.elementAt( 0);
}
else {
// exit if we could not find the relevant capture device.
System.exit(-1);
}
// Create a processor for this capturedevice & exit if we
// cannot create it
try {
processor = Manager.createProcessor(di.getLocator());
} catch (IOException e) {
System.exit(-1);
} catch (NoProcessorException e) {
System.exit(-1);
}
// configure the processor
processor.configure();
// block until it has been configured
processor.setContentDescriptor(
new ContentDescriptor( ContentDescriptor.RAW));
TrackControl track[] = processor.getTrackControls();
boolean encodingOk = false;
// Go through the tracks and try to program one of them to
// output gsm data.
for (int i = 0; i < track.length; i++) {
if (!encodingOk && track[i] instanceof FormatControl) {
if (((FormatControl)track[i]).
setFormat( new AudioFormat(AudioFormat.GSM_RTP,
8000,
8,
1)) == null) {
track[i].setEnabled(false);
}
else {
encodingOk = true;
}
}
else {
// we could not set this track to gsm, so disable it
track[i].setEnabled(false);
}
}
// At this point, we have determined where we can send out
// gsm data or not.
// realize the processor
if (encodingOk) {
processor.realize();
// block until realized.
// get the output datasource of the processor and exit
// if we fail
DataSource ds = null;
try {
ds = processor.getDataOutput();
} catch (NotRealizedError e) {
System.exit(-1);
}
// hand this datasource to manager for creating an RTP
// datasink
// our RTP datasimnk will multicast the audio
try {
MediaLocator m = new MediaLocator("rtpraw://");
// here, manager will look for a datasink in
// <protocol.prefix>.media.protocol.rtpraw.DataSink
// the datasink will create an RTPSocket at
// <protocol.prefix>.media.protocol.rtpraw.DataSource
// and sink all RTP data to this socket.
DataSink d = Manager.createDataSink(ds, m);
d.open();
d.start();
} catch (Exception e) {
System.exit(-1);
}
}
// --- ...until here --- //
