package net.sf.fmj.rtp;
import java.net.InetAddress;
import java.util.Vector;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.PlugInManager;
import javax.media.Processor;
import javax.media.protocol.ContentDescriptor;
import javax.media.Format;
import javax.media.control.BitRateControl;
import javax.media.control.PacketSizeControl;
import javax.media.rtp.TransmissionStats;
import javax.media.control.FrameProcessingControl;
import javax.media.format.AudioFormat;
import net.sf.fmj.media.RegistryDefaults;
// mgodehardt: Explanation how data from microphone flows thru the fmj classes
//
// net.sf.fmj.media.protocol.javasound.DataSource CAPTURE DEVICE, read gets called from next class thru notifier
// net.sf.fmj.media.parser.RawPushBufferParser DEMULTIPLEXER
// net.sf.fmj.media.codec.audio.RateConverter CODEC, process(), converts input to output ( some rate conversion )
// net.sf.fmj.media.codec.audio.ulaw.Encoder CODEC, process(), converts input to output (output is ULAW 8000Hz)
// net.sf.fmj.media.codec.audio.ulaw.Packetizer CODEC, process(), converts input to output ( make packets of 160 byte )
// net.sf.fmj.media.multiplexer.RTPSyncBufferMux MULTIPLEXER
// net.sf.fmj.media.rtp.RTPSendStream is sending data over network
//
public class rtpaudio
{
public static void main(String [] args)
{
if ( args.length != 2 )
{
System.out.println("Usage: rtpaudio <targetIP> <targetPort>");
System.exit(0);
}
try
{
RegistryDefaults.setDefaultFlags(RegistryDefaults.FMJ);
// create a clean registry
RegistryDefaults.unRegisterAll(RegistryDefaults.ALL);
RegistryDefaults.registerAll(RegistryDefaults.FMJ);
// remove all capture devices
Vector deviceList = (Vector)CaptureDeviceManager.getDeviceList(null).clone();
for (int i=0; i<deviceList.size(); i++)
{
CaptureDeviceInfo cdi = (CaptureDeviceInfo)deviceList.elementAt(i);
CaptureDeviceManager.removeDevice(cdi);
}
// update capture device list
new net.sf.fmj.media.cdp.javasound.CaptureDevicePlugger().addCaptureDevices();
PlugInManager.commit();
deviceList = (Vector)CaptureDeviceManager.getDeviceList(null).clone();
if ( (null == deviceList) || (deviceList.size() == 0) )
{
System.out.println("### ERROR found no audio capture device");
System.exit(0);
}
// enumerate all codec
Vector codecList = PlugInManager.getPlugInList(null, null, PlugInManager.CODEC);
System.out.println("found " + codecList.size() + " codec");
for (int i=0; i<codecList.size(); i++)
{
String aCodecClass = (String)codecList.elementAt(i);
System.out.println("# " + (i + 1) + " " + aCodecClass);
}
// fetch first available audio capture device
deviceList = (Vector)CaptureDeviceManager.getDeviceList(null).clone();
CaptureDeviceInfo captureDeviceInfo = (CaptureDeviceInfo)deviceList.elementAt(0);
System.out.println("### using " + captureDeviceInfo.getName());
System.out.println("### locator " + captureDeviceInfo.getLocator());
javax.media.protocol.DataSource dataSource = javax.media.Manager.createDataSource(new javax.media.MediaLocator(captureDeviceInfo.getLocator().toString()));
//javax.media.protocol.DataSource dataSource = javax.media.Manager.createDataSource(new javax.media.MediaLocator("javasound://"));
System.out.println("### created datasource " + dataSource.getClass().getName());
javax.media.control.FormatControl[] formatControls = ((javax.media.protocol.CaptureDevice)dataSource).getFormatControls();
System.out.println("got format control " + formatControls[0].getClass().getName());
System.out.println("current format is " + formatControls[0].getFormat());
// set audio capture format
javax.media.Format[] formats = formatControls[0].getSupportedFormats();
for (int i=0; i<formats.length; i++)
{
javax.media.format.AudioFormat af = (javax.media.format.AudioFormat)formats[i];
if ( (af.getChannels() == 1) && (af.getSampleSizeInBits() == 16) )
{
if ( af.getSampleRate() == Format.NOT_SPECIFIED )
{
javax.media.format.AudioFormat newAudioFormat = new javax.media.format.AudioFormat(af.getEncoding(), 8000.0f, javax.media.Format.NOT_SPECIFIED, javax.media.Format.NOT_SPECIFIED);
//javax.media.format.AudioFormat newAudioFormat = new javax.media.format.AudioFormat(af.getEncoding(), 44100.0f, javax.media.Format.NOT_SPECIFIED, javax.media.Format.NOT_SPECIFIED);
formatControls[0].setFormat((javax.media.format.AudioFormat)newAudioFormat.intersects(af));
break;
}
}
}
System.out.println("current format is now " + formatControls[0].getFormat());
FrameProcessingControl fpc = null;
// adujst recording buffer ( to adjust latency )
dataSource.stop();
Object[] controls = dataSource.getControls();
for (int i=0; i<controls.length; i++)
{
String className = controls[i].getClass().getName();
if ( -1 != className.indexOf("JavaSoundBufferControl") )
{
javax.media.control.BufferControl bc = (javax.media.control.BufferControl)controls[i];
System.out.println("### current javasound buffer length is " + bc.getBufferLength() + " ms");
bc.setBufferLength(40);
System.out.println("### current javasound buffer length is " + bc.getBufferLength() + " ms");
}
else if ( -1 != className.indexOf("JitterBufferControl") )
{
javax.media.control.BufferControl bc = (javax.media.control.BufferControl)controls[i];
System.out.println("### current jitter buffer length is " + bc.getBufferLength() + " ms");
bc.setBufferLength(80);
System.out.println("### current jitter buffer length is " + bc.getBufferLength() + " ms");
}
else if ( -1 != className.indexOf("FPC") )
{
fpc = (FrameProcessingControl)controls[i];
System.out.println("### found bitrate control " + fpc.getClass());
}
}
dataSource.start();
// create processor
javax.media.Processor processor = javax.media.Manager.createProcessor(dataSource);
System.out.println("### created processor " + processor.getClass().getName());
processor.configure();
for (int idx=0; idx<100; idx++)
{
if ( processor.getState() == Processor.Configured )
{
break;
}
Thread.sleep(100);
}
System.out.println("### processor state " + processor.getState());
processor.setContentDescriptor(new javax.media.protocol.ContentDescriptor(ContentDescriptor.RAW_RTP));
javax.media.control.TrackControl[] tracks = processor.getTrackControls();
///tracks[0].setFormat(new javax.media.format.AudioFormat(javax.media.format.AudioFormat.ULAW_RTP, 8000, 8, 1));
tracks[0].setFormat(new javax.media.format.AudioFormat(javax.media.format.AudioFormat.GSM_RTP, 8000, 8, 1));
processor.realize();
for (int idx=0; idx<100; idx++)
{
if ( processor.getState() == Processor.Realized )
{
break;
}
Thread.sleep(100);
}
System.out.println("### processor state " + processor.getState());
javax.media.protocol.DataSource dataOutput = processor.getDataOutput();
System.out.println("### processor data output " + dataOutput.getClass().getName());
// BitRateControl
BitRateControl bitrateControl = null;
Object[] controls2 = dataOutput.getControls();
for (int i=0; i<controls2.length; i++)
{
if ( controls2[i] instanceof BitRateControl )
{
bitrateControl = (BitRateControl)controls2[i];
System.out.println("### found bitrate control " + bitrateControl.getClass());
break;
}
}
// PacketSizeControl
Object[] controls3 = processor.getControls();
for (int i=0; i<controls3.length; i++)
{
if ( controls3[i] instanceof PacketSizeControl )
{
PacketSizeControl psc = (PacketSizeControl)controls3[i];
System.out.println("### current packetsize is " + psc.getPacketSize() + " bytes");
psc.setPacketSize(66);
System.out.println("### current packetsize is " + psc.getPacketSize() + " bytes");
break;
}
}
// enumerate all controls of the processor
Object[] pcontrols = processor.getControls();
for (int i=0; i<pcontrols.length; i++)
{
System.out.println("processor control " + i + " " + pcontrols[i]);
}
javax.media.rtp.RTPManager rtpManager = javax.media.rtp.RTPManager.newInstance();
javax.media.rtp.SessionAddress local = new javax.media.rtp.SessionAddress(InetAddress.getLocalHost(), Integer.valueOf(args[1]).intValue());
javax.media.rtp.SessionAddress target = new javax.media.rtp.SessionAddress(InetAddress.getByName(args[0]), Integer.valueOf(args[1]).intValue());
rtpManager.initialize(local);
rtpManager.addTarget(target);
javax.media.rtp.SendStream sendStream = rtpManager.createSendStream(dataOutput, 0);
sendStream.start();
processor.start();
Thread.sleep(1000);
System.out.println("\n>>>>>> TRANSMITTING ULAW/RTP AUDIO NOW");
while ( 2 > 1 )
{
Thread.sleep(1000);
if ( null != bitrateControl )
{
TransmissionStats stats = sendStream.getSourceTransmissionStats();
System.out.println("rtp audio send: bitrate=" + bitrateControl.getBitRate() + " (pdu=" + stats.getPDUTransmitted() + " bytes=" + stats.getBytesTransmitted() + " overrun=" + fpc.getFramesDropped() + ")");
}
}
}
catch ( Exception ex )
{
ex.printStackTrace();
}
System.exit(0);
}
}