/**
* Updates the participant with information for receiver reports.
*
* @param packetLength to keep track of received octets
* @param pkt the most recently received packet
*/
protected void updateRRStats(int packetLength, RtpPkt pkt) {
int curSeqNum = pkt.getSeqNumber();
if (firstSeqNumber < 0) {
firstSeqNumber = curSeqNum;
}
receivedOctets += packetLength;
receivedSinceLastSR++;
receivedPkts++;
long curTime = System.currentTimeMillis();
if (this.lastSeqNumber < curSeqNum) {
// In-line packet, best thing you could hope for
this.lastSeqNumber = curSeqNum;
} else if (this.lastSeqNumber - this.lastSeqNumber < -100) {
// Sequence counter rolled over
this.lastSeqNumber = curSeqNum;
seqRollOverCount++;
} else {
// This was probably a duplicate or a late arrival.
}
// Calculate jitter
if (this.lastRtpPkt > 0) {
long D = (pkt.getTimeStamp() - curTime) - (this.lastRtpTimestamp - this.lastRtpPkt);
if (D < 0) D = (-1) * D;
this.interArrivalJitter += ((double) D - this.interArrivalJitter) / 16.0;
}
lastRtpPkt = curTime;
lastRtpTimestamp = pkt.getTimeStamp();
}
/**
* Send data to all participants registered as receivers, using the current timeStamp and payload
* type. The RTP timestamp will be the same for all the packets.
*
* @param buffers A buffer of bytes, should not bed padded and less than 1500 bytes on most
* networks.
* @param csrcArray an array with the SSRCs of contributing sources
* @param markers An array indicating what packets should be marked. Rarely anything but the first
* one
* @param rtpTimestamp The RTP timestamp to be applied to all packets
* @param seqNumbers An array with the sequence number associated with each byte[]
* @return null if there was a problem sending the packets, 2-dim array with {RTP Timestamp,
* Sequence number}
*/
public long[][] sendData(
byte[][] buffers, long[] csrcArray, boolean[] markers, long rtpTimestamp, long[] seqNumbers) {
logger.debug("-> RTPSession.sendData(byte[])");
// Same RTP timestamp for all
if (rtpTimestamp < 0) rtpTimestamp = System.currentTimeMillis();
// Return values
long[][] ret = new long[buffers.length][2];
for (int i = 0; i < buffers.length; i++) {
byte[] buf = buffers[i];
boolean marker = false;
if (markers != null) marker = markers[i];
if (buf.length > 1500) {
System.out.println(
"RTPSession.sendData() called with buffer exceeding 1500 bytes (" + buf.length + ")");
}
// Get the return values
ret[i][0] = rtpTimestamp;
if (seqNumbers == null) {
ret[i][1] = getNextSeqNum();
} else {
ret[i][1] = seqNumbers[i];
}
// Create a new RTP Packet
RtpPkt pkt = new RtpPkt(rtpTimestamp, this.ssrc, (int) ret[i][1], this.payloadType, buf);
if (csrcArray != null) pkt.setCsrcs(csrcArray);
pkt.setMarked(marker);
// Creates a raw packet
byte[] pktBytes = pkt.encode();
// System.out.println(Integer.toString(StaticProcs.bytesToUIntInt(pktBytes, 2)));
// Pre-flight check, are resolving an SSRC conflict?
if (this.conflict) {
System.out.println("RTPSession.sendData() called while trying to resolve conflict.");
return null;
}
if (this.mcSession) {
DatagramPacket packet = null;
try {
packet =
new DatagramPacket(pktBytes, pktBytes.length, this.mcGroup, this.rtpMCSock.getPort());
} catch (Exception e) {
System.out.println("RTPSession.sendData() packet creation failed.");
e.printStackTrace();
return null;
}
try {
rtpMCSock.send(packet);
// Debug
if (this.debugAppIntf != null) {
this.debugAppIntf.packetSent(
1,
(InetSocketAddress) packet.getSocketAddress(),
new String(
"Sent multicast RTP packet of size "
+ packet.getLength()
+ " to "
+ packet.getSocketAddress().toString()
+ " via "
+ rtpMCSock.getLocalSocketAddress().toString()));
}
} catch (Exception e) {
System.out.println("RTPSession.sendData() multicast failed.");
e.printStackTrace();
return null;
}
} else {
// Loop over recipients
Iterator<Participant> iter = partDb.getUnicastReceivers();
while (iter.hasNext()) {
InetSocketAddress receiver = iter.next().rtpAddress;
DatagramPacket packet = null;
logger.debug(" Sending to {}", receiver);
try {
packet = new DatagramPacket(pktBytes, pktBytes.length, receiver);
} catch (Exception e) {
System.out.println("RTPSession.sendData() packet creation failed.");
e.printStackTrace();
return null;
}
// Actually send the packet
try {
rtpSock.send(packet);
// Debug
if (this.debugAppIntf != null) {
this.debugAppIntf.packetSent(
0,
(InetSocketAddress) packet.getSocketAddress(),
new String(
"Sent unicast RTP packet of size "
+ packet.getLength()
+ " to "
+ packet.getSocketAddress().toString()
+ " via "
+ rtpSock.getLocalSocketAddress().toString()));
}
} catch (Exception e) {
System.out.println("RTPSession.sendData() unicast failed.");
e.printStackTrace();
return null;
}
}
}
// Update our stats
this.sentPktCount++;
this.sentOctetCount++;
logger.info("<- RTPSession.sendData(byte[])", pkt.getSeqNumber());
}
return ret;
}