Esempio n. 1
0
  /**
   * 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;
  }
Esempio n. 2
0
 /**
  * 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;
 }
Esempio n. 3
0
 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);
         }
       }
     }
   }
 }
Esempio n. 4
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 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);
     }
   }
 }
Esempio n. 5
0
 @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);
 }