// Create a new RTP session. If multicast is not being used then multicastIP
// should be set to an empty string.
static RTPSession createRtpSession(const std::string& multicastIP,
unsigned int port)
{
RTPSession session;
//if (setenv("LOGNAME", "video", 0) != 0) {
// throw std::runtime_error("Error setting LOGNAME environment variable");
//}
// Set up session params
RTPSessionParams sessionparams;
sessionparams.SetUsePollThread(false);
sessionparams.SetMaximumPacketSize(1400);
sessionparams.SetAcceptOwnPackets(true);
sessionparams.SetOwnTimestampUnit(1.0f/900000.0f);
sessionparams.SetResolveLocalHostname(false);
sessionparams.SetSessionBandwidth(9000000);
sessionparams.SetReceiveMode(RTPTransmitter::AcceptAll);
RTPUDPv4TransmissionParams transparams;
transparams.SetPortbase(port);
int status = session.Create(sessionparams, &transparams);
if (status < 0) {
throw std::runtime_error("Error creating RTP session");
}
// Join multicast groups if they are specified
if (multicastIP.size() > 0) {
if (!session.SupportsMulticasting()) {
throw std::runtime_error("Multicast not supported!");
} else {
int joinip = ntohl(inet_addr(multicastIP.c_str()));
RTPIPv4Address joinaddr(joinip, port);
int jstatus = session.JoinMulticastGroup(joinaddr);
if (jstatus < 0) {
throw std::runtime_error("Unable to join multicast group");
}
}
}
return session;
}
