CaptureDeviceInfo di = null;
Processor p = null;
StateHelper sh = null;
Vector deviceList = CaptureDeviceManager.getDeviceList(new
AudioFormat(AudioFormat.LINEAR, 44100, 16, 2));
if (deviceList.size() > 0)
di = (CaptureDeviceInfo)deviceList.firstElement();
else
// Exit if we can't find a device that does linear, 44100Hz, 16 bit,
// stereo audio.
System.exit(-1);
try {
p = Manager.createProcessor(di.getLocator());
sh = new StateHelper(p);
} catch (IOException e) {
System.exit(-1);
} catch (NoProcessorException e) {
System.exit(-1);
}
// ---------------- CUT HERE ------------------ //
// Configure the processor
if (!sh.configure(10000))
System.exit(-1);
// Set the output content type
p.setContentDescriptor(new FileTypeDescriptor(FileTypeDescriptor.WAVE));
// Get the track control objects
TrackControl track[] = p.getTrackControls();
boolean encodingPossible = false;
// Go through the tracks and try to program one of them
// to output ima4 data.
for (int i = 0; i < track.length; i++) {
try {
track[i].setFormat(new AudioFormat(AudioFormat.IMA4_MS));
encodingPossible = true;
} catch (Exception e) {
// cannot convert to ima4
track[i].setEnabled(false);
}
}
if (!encodingPossible) {
sh.close();
System.exit(-1);
}
// Realize the processor
if (!sh.realize(10000))
System.exit(-1);
// ------------- CUT HERE -------------- //
// get the output of the processor
DataSource source = p.getDataOutput();
// create a File protocol MediaLocator with the location of the
// file to which the data is to be written
MediaLocator dest = new MediaLocator("file://foo.wav");
// create a datasink to do the file writing & open the sink to
// make sure we can write to it.
DataSink filewriter = null;
try {
filewriter = Manager.createDataSink(source, dest);
filewriter.open();
} catch (NoDataSinkException e) {
System.exit(-1);
} catch (IOException e) {
System.exit(-1);
} catch (SecurityException e) {
System.exit(-1);
}
// if the Processor implements StreamWriterControl, we can
// call setStreamSizeLimit
// to set a limit on the size of the file that is written.
StreamWriterControl swc = (StreamWriterControl)
p.getControl("javax.media.control.StreamWriterControl");
//set limit to 5MB
if (swc != null)
swc.setStreamSizeLimit(5000000);
// now start the filewriter and processor
try {
filewriter.start();
} catch (IOException e) {
System.exit(-1);
}
// Capture for 5 seconds
sh.playToEndOfMedia(5000);
sh.close();
// Wait for an EndOfStream from the DataSink and close it...
filewriter.close();
