/** * Tries to find an SSRC paired with {@code ssrc} in an FID group in one of the channels from * {@link #channel}'s {@code Content}. Returns -1 on failure. * * @param pkt the {@code RawPacket} that holds the RTP packet for which to find a paired SSRC. * @return An SSRC paired with {@code ssrc} in an FID group, or -1. */ private long getRtxSsrc(RawPacket pkt) { StreamRTPManager receiveRTPManager = channel.getStream().getRTPTranslator().findStreamRTPManagerByReceiveSSRC(pkt.getSSRC()); MediaStreamTrackReceiver receiver = null; if (receiveRTPManager != null) { MediaStream receiveStream = receiveRTPManager.getMediaStream(); if (receiveStream != null) { receiver = receiveStream.getMediaStreamTrackReceiver(); } } if (receiver == null) { return -1; } RTPEncoding encoding = receiver.resolveRTPEncoding(pkt); if (encoding == null) { logger.warn( "encoding_not_found" + ",stream_hash=" + channel.getStream().hashCode() + " ssrc=" + pkt.getSSRCAsLong()); return -1; } return encoding.getRTXSSRC(); }
/** * Returns the SSRC paired with <tt>ssrc</tt> in an FID source-group, if any. If none is found, * returns -1. * * @return the SSRC paired with <tt>ssrc</tt> in an FID source-group, if any. If none is found, * returns -1. */ private long getPrimarySsrc(RawPacket pkt) { MediaStreamTrackReceiver receiver = channel.getStream().getMediaStreamTrackReceiver(); if (receiver == null) { if (logger.isDebugEnabled()) { logger.debug("Dropping an incoming RTX packet from an unknown source."); } return -1; } RTPEncoding encoding = receiver.resolveRTPEncoding(pkt); if (encoding == null) { if (logger.isDebugEnabled()) { logger.debug("Dropping an incoming RTX packet from an unknown source."); } return -1; } return encoding.getPrimarySSRC(); }