/**
     * Updates this <tt>RTPStatsMap</tt> with information it gets from the <tt>RawPacket</tt>.
     *
     * @param pkt the <tt>RawPacket</tt> that is being transmitted.
     */
    public void apply(RawPacket pkt) {
      int ssrc = pkt.getSSRC();
      if (this.containsKey(ssrc)) {
        RTPStatsEntry oldRtpStatsEntry = this.get(ssrc);

        // Replace whatever was in there before. A feature of the two's
        // complement encoding (which is used by Java integers) is that
        // the bitwise results for add, subtract, and multiply are the
        // same if both inputs are interpreted as signed values or both
        // inputs are interpreted as unsigned values. (Other encodings
        // like one's complement and signed magnitude don't have this
        // properly.)
        this.put(
            ssrc,
            new RTPStatsEntry(
                ssrc,
                oldRtpStatsEntry.getBytesSent()
                    + pkt.getLength()
                    - pkt.getHeaderLength()
                    - pkt.getPaddingSize(),
                oldRtpStatsEntry.getPacketsSent() + 1));
      } else {
        // Add a new <tt>RTPStatsEntry</tt> in this map.
        this.put(
            ssrc,
            new RTPStatsEntry(
                ssrc, pkt.getLength() - pkt.getHeaderLength() - pkt.getPaddingSize(), 1));
      }
    }
        /** {@inheritDoc} */
        @Override
        public RawPacket transform(RawPacket pkt) {
          if (pkt == null) {
            return pkt;
          }

          RTCPCompoundPacket inPacket;
          try {
            inPacket =
                (RTCPCompoundPacket)
                    parser.parse(pkt.getBuffer(), pkt.getOffset(), pkt.getLength());
          } catch (BadFormatException e) {
            logger.warn("Failed to terminate an RTCP packet. " + "Dropping packet.");
            return null;
          }

          // Update our RTCP stats map (timestamps). This operation is
          // read-only.
          remoteClockEstimator.apply(inPacket);

          cnameRegistry.update(inPacket);

          // Remove SRs and RRs from the RTCP packet.
          pkt = feedbackGateway.gateway(inPacket);

          return pkt;
        }
Ejemplo n.º 3
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  private void emptyPacketBuffer(long ssrc) {
    RawPacket[] pkts = rtpConnector.packetBuffer.emptyBuffer(ssrc);
    RTPConnectorImpl.OutputDataStreamImpl dataStream;

    try {
      dataStream = rtpConnector.getDataOutputStream();
    } catch (IOException ioe) {
      logger.error("Failed to empty packet buffer for SSRC=" + ssrc + ": " + ioe);
      return;
    }
    for (RawPacket pkt : pkts)
      dataStream.write(
          pkt.getBuffer(), pkt.getOffset(), pkt.getLength(), false /* already transformed */);
  }
Ejemplo n.º 4
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      @Override
      public int read(byte[] buffer, int offset, int length) throws IOException {

        RawPacket pendingPacket;
        if (isControlStream) {
          pendingPacket = pendingControlPacket;
        } else {
          pendingPacket = pendingDataPacket;
        }
        int bytesToRead = 0;
        byte[] pendingPacketBuffer = pendingPacket.getBuffer();
        if (pendingPacketBuffer != null) {
          int pendingPacketLength = pendingPacket.getLength();
          bytesToRead = length > pendingPacketLength ? pendingPacketLength : length;
          System.arraycopy(
              pendingPacketBuffer, pendingPacket.getOffset(), buffer, offset, bytesToRead);
        }
        return bytesToRead;
      }