/**
* Creates a new, empty SessionDescription. The session is set as follows:
*
* <p>v=0
*
* <p>o=this.createOrigin ("user", InetAddress.getLocalHost().toString());
*
* <p>s=-
*
* <p>t=0 0
*
* @throws SdpException SdpException, - if there is a problem constructing the SessionDescription.
* @return a new, empty SessionDescription.
*/
public SessionDescription createSessionDescription() throws SdpException {
SessionDescriptionImpl sessionDescriptionImpl = new SessionDescriptionImpl();
ProtoVersionField ProtoVersionField = new ProtoVersionField();
ProtoVersionField.setVersion(0);
sessionDescriptionImpl.setVersion(ProtoVersionField);
OriginField originImpl = null;
try {
originImpl =
(OriginField) this.createOrigin("user", InetAddress.getLocalHost().getHostAddress());
} catch (UnknownHostException e) {
e.printStackTrace();
}
sessionDescriptionImpl.setOrigin(originImpl);
SessionNameField sessionNameImpl = new SessionNameField();
sessionNameImpl.setValue("-");
sessionDescriptionImpl.setSessionName(sessionNameImpl);
TimeDescriptionImpl timeDescriptionImpl = new TimeDescriptionImpl();
TimeField timeImpl = new TimeField();
timeImpl.setZero();
timeDescriptionImpl.setTime(timeImpl);
Vector times = new Vector();
times.addElement(timeDescriptionImpl);
sessionDescriptionImpl.setTimeDescriptions(times);
sessionDescriptionsList.addElement(sessionDescriptionImpl);
return sessionDescriptionImpl;
}
public static void main(String[] args) throws SdpParseException, SdpException {
String sdpFields =
"v=0\r\n"
+ "o=4855 13760799956958020 13760799956958020 IN IP4 166.35.224.216\r\n"
+ "s=nortelnetworks\r\n"
+ "p=+1 972 684 1000\r\n"
+ "c=IN IP4 166.35.224.216\r\n"
+ "t=0 0\r\n"
+ "m=audio 50006 RTP/AVP 0 8 4 18\r\n"
+ "a=rtpmap:0 PCMU/8000\r\n"
+ "a=rtpmap:8 PCMA/8000\r\n"
+ "a=rtpmap:4 G723/8000\r\n"
+ "a=rtpmap:18 G729A/8000\r\n"
+ "a=ptime:30\r\n";
SdpFactory sdpFactory = new SdpFactory();
SessionDescription sessionDescription = sdpFactory.createSessionDescription(sdpFields);
System.out.println("sessionDescription = " + sessionDescription);
Vector mediaDescriptions = sessionDescription.getMediaDescriptions(true);
for (int i = 0; i < mediaDescriptions.size(); i++) {
MediaDescription m = (MediaDescription) mediaDescriptions.elementAt(i);
System.out.println("m = " + m.toString());
Media media = m.getMedia();
Vector formats = media.getMediaFormats(false);
System.out.println("formats = " + formats);
}
}
/**
* Returns MediaDescription object with the specified properties. The returned object will respond
* to Media.getMediaFormats(boolean) with a Vector of String objects specified by the 'formats
* argument.
*
* @param media the media type, eg "audio"
* @param port port number on which to receive media
* @param numPorts number of ports used for this media stream
* @param transport transport type, eg "RTP/AVP"
* @param formats list of formats which should be specified by the returned MediaDescription
* @return MediaDescription
*/
public MediaDescription createMediaDescription(
String media, int port, int numPorts, String transport, String[] formats) {
MediaDescriptionImpl mediaDescriptionImpl = new MediaDescriptionImpl();
try {
MediaField mediaImpl = new MediaField();
mediaImpl.setMediaType(media);
mediaImpl.setMediaPort(port);
mediaImpl.setPortCount(numPorts);
mediaImpl.setProtocol(transport);
Vector formatsV = new Vector(formats.length);
for (int i = 0; i < formats.length; i++) formatsV.add(formats[i]);
mediaImpl.setMediaFormats(formatsV);
mediaDescriptionImpl.setMedia(mediaImpl);
} catch (SdpException s) {
s.printStackTrace();
}
return mediaDescriptionImpl;
}