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);
}
}
public MediaDestination getMediaDestination(SessionDescription sessionDescription)
throws NoCodecException {
InetAddress destAddress = sessionDescription.getIpAddress();
List<MediaDescription> mediaDescriptions = sessionDescription.getMediaDescriptions();
for (MediaDescription mediaDescription : mediaDescriptions) {
if (RFC4566.MEDIA_AUDIO.equals(mediaDescription.getType())) {
for (Codec offerCodec : mediaDescription.getCodecs()) {
if (supportedCodecs.contains(offerCodec)) {
String offerCodecName = offerCodec.getName();
if (offerCodecName.equalsIgnoreCase(RFC3551.PCMU)
|| offerCodecName.equalsIgnoreCase(RFC3551.PCMA)) {
int destPort = mediaDescription.getPort();
if (mediaDescription.getIpAddress() != null) {
destAddress = mediaDescription.getIpAddress();
}
MediaDestination mediaDestination = new MediaDestination();
mediaDestination.setDestination(destAddress.getHostAddress());
mediaDestination.setPort(destPort);
mediaDestination.setCodec(offerCodec);
return mediaDestination;
}
}
}
}
}
throw new NoCodecException();
}
public SessionDescription createSessionDescription(SessionDescription offer, int localRtpPort)
throws IOException {
SessionDescription sessionDescription = new SessionDescription();
sessionDescription.setUsername("user1");
sessionDescription.setId(random.nextInt(Integer.MAX_VALUE));
sessionDescription.setVersion(random.nextInt(Integer.MAX_VALUE));
Config config = userAgent.getConfig();
InetAddress inetAddress = config.getPublicInetAddress();
if (inetAddress == null) {
inetAddress = config.getLocalInetAddress();
}
sessionDescription.setIpAddress(inetAddress);
sessionDescription.setName("-");
sessionDescription.setAttributes(new Hashtable<String, String>());
List<Codec> codecs;
if (offer == null) {
codecs = supportedCodecs;
} else {
codecs = new ArrayList<Codec>();
for (MediaDescription mediaDescription : offer.getMediaDescriptions()) {
if (RFC4566.MEDIA_AUDIO.equals(mediaDescription.getType())) {
for (Codec codec : mediaDescription.getCodecs()) {
if (supportedCodecs.contains(codec)) {
codecs.add(codec);
}
}
}
}
}
MediaDescription mediaDescription = new MediaDescription();
Hashtable<String, String> attributes = new Hashtable<String, String>();
attributes.put(RFC4566.ATTR_SENDRECV, "");
mediaDescription.setAttributes(attributes);
mediaDescription.setType(RFC4566.MEDIA_AUDIO);
mediaDescription.setPort(localRtpPort);
mediaDescription.setCodecs(codecs);
List<MediaDescription> mediaDescriptions = new ArrayList<MediaDescription>();
mediaDescriptions.add(mediaDescription);
sessionDescription.setMediaDescriptions(mediaDescriptions);
return sessionDescription;
}
