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(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() == Controller.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);
}
/**
* Opens a connection to the media source of the associated <tt>DataSource</tt>.
*
* @throws IOException if anything goes wrong while opening a connection to the media source of
* the associated <tt>DataSource</tt>
*/
public synchronized void connect() throws IOException {
javax.media.format.AudioFormat af = (javax.media.format.AudioFormat) getFormat();
int channels = af.getChannels();
int channelConfig;
switch (channels) {
case Format.NOT_SPECIFIED:
case 1:
channelConfig = AudioFormat.CHANNEL_IN_MONO;
break;
case 2:
channelConfig = AudioFormat.CHANNEL_IN_STEREO;
break;
default:
throw new IOException("channels");
}
int sampleSizeInBits = af.getSampleSizeInBits();
int audioFormat;
switch (sampleSizeInBits) {
case 8:
audioFormat = AudioFormat.ENCODING_PCM_8BIT;
break;
case 16:
audioFormat = AudioFormat.ENCODING_PCM_16BIT;
break;
default:
throw new IOException("sampleSizeInBits");
}
double sampleRate = af.getSampleRate();
length =
(int)
Math.round(
20 /* milliseconds */ * (sampleRate / 1000) * channels * (sampleSizeInBits / 8));
/*
* Apart from the thread in which #read(Buffer) is executed, use the
* thread priority for the thread which will create the AudioRecord.
*/
setThreadPriority();
try {
int minBufferSize =
AudioRecord.getMinBufferSize((int) sampleRate, channelConfig, audioFormat);
audioRecord =
new AudioRecord(
MediaRecorder.AudioSource.DEFAULT,
(int) sampleRate,
channelConfig,
audioFormat,
Math.max(length, minBufferSize));
// tries to configure audio effects if available
configureEffects();
} catch (IllegalArgumentException iae) {
IOException ioe = new IOException();
ioe.initCause(iae);
throw ioe;
}
setThreadPriority = true;
}