/**
* Return a set of all items with type CNAME from the RTCP SDES packet <tt>pkt</tt>.
*
* @param pkt the packet to parse for CNAME items.
* @retur a set of all items with type CNAME from the RTCP SDES packet <tt>pkt</tt>.
*/
private Set<CNAMEItem> getCnameItems(RawPacket pkt) {
Set<CNAMEItem> ret = new HashSet<CNAMEItem>();
byte[] buf = pkt.getBuffer();
int off = pkt.getOffset();
int len = pkt.getLength();
// first item
int ptr = 4;
while (ptr + 6 < len) // an item is at least 6B: 4B ssrc, 1B type, 1B len
{
int type = buf[off + ptr + 4];
int len2 = buf[off + ptr + 5];
if (ptr + 6 + len2 >= len) // not enough buffer for the whole item
break;
if (type == 1) // CNAME
{
CNAMEItem item = new CNAMEItem();
item.ssrc = readUnsignedIntAsLong(buf, off + ptr);
item.cname = readString(buf, off + ptr + 6, len2);
ret.add(item);
}
ptr += 6 + len2;
}
return ret;
}
/**
* Checks whether there are packets with sequence numbers between <tt>firstSeq</tt> and
* <tt>lastSeq</tt> which are *not* stored in <tt>data</tt>.
*
* @return <tt>true</tt> if there are packets with sequence numbers between <tt>firstSeq</tt> and
* <tt>lastSeq</tt> which are *not* stored in <tt>data</tt>.
*/
private boolean haveMissing() {
Set<Long> seqs = data.keySet();
long s = firstSeq;
while (s != lastSeq) {
if (!seqs.contains(s)) return true;
s = (s + 1) % (1 << 16);
}
return false;
}
private void handleRtpPacket(RawPacket pkt) {
if (pkt != null && pkt.getPayloadType() == vp8PayloadType) {
int ssrc = pkt.getSSRC();
if (!activeVideoSsrcs.contains(ssrc & 0xffffffffL)) {
synchronized (activeVideoSsrcs) {
if (!activeVideoSsrcs.contains(ssrc & 0xffffffffL)) {
activeVideoSsrcs.add(ssrc & 0xffffffffL);
rtcpFeedbackSender.sendFIR(ssrc);
}
}
}
}
}
private void nudge() {
for (Iterator<RecorderEvent> iter = pendingEvents.iterator(); iter.hasNext(); ) {
RecorderEvent ev = iter.next();
long instant = getSynchronizer().getLocalTime(ev.getSsrc(), ev.getRtpTimestamp());
if (instant != -1) {
iter.remove();
ev.setInstant(instant);
handler.handleEvent(ev);
}
}
}
@Override
public boolean handleEvent(RecorderEvent ev) {
if (ev == null) return true;
if (RecorderEvent.Type.RECORDING_STARTED.equals(ev.getType())) {
long instant = getSynchronizer().getLocalTime(ev.getSsrc(), ev.getRtpTimestamp());
if (instant != -1) {
ev.setInstant(instant);
return handler.handleEvent(ev);
} else {
pendingEvents.add(ev);
return true;
}
}
return handler.handleEvent(ev);
}