1
0
Fork 0
mirror of https://github.com/vanitasvitae/Smack.git synced 2024-11-26 14:02:06 +01:00
Smack/jingle/media/source/org/jivesoftware/jingleaudio/jmf/AudioMediaSession.java
2007-01-04 17:25:30 +00:00

155 lines
5.2 KiB
Java
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

package org.jivesoftware.jingleaudio.jmf; /**
* $RCSfile$
* $Revision: $
* $Date: 08/11/2006
* <p/>
* Copyright 2003-2006 Jive Software.
* <p/>
* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import org.jivesoftware.jingleaudio.jmf.AudioChannel;
import org.jivesoftware.jingleaudio.jmf.AudioFormatUtils;
import org.jivesoftware.smackx.jingle.media.JingleMediaSession;
import org.jivesoftware.smackx.jingle.media.PayloadType;
import org.jivesoftware.smackx.jingle.nat.TransportCandidate;
import javax.media.MediaLocator;
import javax.media.format.AudioFormat;
import java.io.IOException;
import java.net.ServerSocket;
/**
* This Class implements a complete JingleMediaSession.
* It sould be used to transmit and receive audio captured from the Mic.
* This Class should be automaticly controlled by JingleSession.
* But you could also use in any VOIP application.
* For better NAT Traversal support this implementation don´t support only receive or only transmit.
* To receive you MUST transmit. So the only implemented and functionally methods are startTransmit() and stopTransmit()
*/
public class AudioMediaSession extends JingleMediaSession {
private AudioFormat format;
private AudioChannel audioChannel;
/**
* Creates a org.jivesoftware.jingleaudio.jmf.AudioMediaSession with defined payload type, remote and local candidates
*
* @param payloadType Payload of the jmf
* @param remote The remote information. The candidate that the jmf will be sent to.
* @param local The local information. The candidate that will receive the jmf
*/
public AudioMediaSession(final PayloadType payloadType, final TransportCandidate remote,
final TransportCandidate local) {
super(payloadType, remote, local);
}
/**
* Initialize the Audio Channel to make it able to send and receive audio
*/
public void initialize() {
String ip;
String localIp;
int localPort;
int remotePort;
if (this.getLocal().getSymmetric() != null) {
ip = this.getLocal().getIp();
localIp = this.getLocal().getLocalIp();
localPort = getFreePort();
remotePort = this.getLocal().getSymmetric().getPort();
System.out.println(this.getLocal().getConnection() + " " + ip + ": " + localPort + "->" + remotePort);
} else {
ip = this.getRemote().getIp();
localIp = this.getLocal().getLocalIp();
localPort = this.getLocal().getPort();
remotePort = this.getRemote().getPort();
}
audioChannel = new AudioChannel(new MediaLocator("dsound://"), localIp, ip, localPort, remotePort, AudioFormatUtils.getAudioFormat(this.getPayloadType()));
}
/**
* Starts transmission and for NAT Traversal reasons start receiving also.
*/
public void startTrasmit() {
audioChannel.start();
}
/**
* Set transmit activity. If the active is true, the instance should trasmit.
* If it is set to false, the instance should pause transmit.
*
* @param active
*/
public void setTrasmit(boolean active) {
audioChannel.setTrasmit(active);
}
/**
* For NAT Reasons this method does nothing. Use startTransmit() to start transmit and receive jmf
*/
public void startReceive() {
// Do nothing
}
/**
* Stops transmission and for NAT Traversal reasons stop receiving also.
*/
public void stopTrasmit() {
audioChannel.stop();
}
/**
* For NAT Reasons this method does nothing. Use startTransmit() to start transmit and receive jmf
*/
public void stopReceive() {
// Do nothing
}
/**
* Obtain a free port we can use.
*
* @return A free port number.
*/
protected int getFreePort() {
ServerSocket ss;
int freePort = 0;
for (int i = 0; i < 10; i++) {
freePort = (int) (10000 + Math.round(Math.random() * 10000));
freePort = freePort % 2 == 0 ? freePort : freePort + 1;
try {
ss = new ServerSocket(freePort);
freePort = ss.getLocalPort();
ss.close();
return freePort;
}
catch (IOException e) {
e.printStackTrace();
}
}
try {
ss = new ServerSocket(0);
freePort = ss.getLocalPort();
ss.close();
}
catch (IOException e) {
e.printStackTrace();
}
return freePort;
}
}