public void setDestinationPorts(int dport) {
		if (dport % 2 == 1) {
			mRtpPort = dport-1;
			mRtcpPort = dport;
		} else {
			mRtpPort = dport;
			mRtcpPort = dport+1;
		}
	}
Sets the destination ports of the stream.
If an odd number is supplied for the destination port then the next 
lower even number will be used for RTP and it will be used for RTCP.
If an even number is supplied, it will be used for RTP and the next odd
number will be used for RTCP.
@param dport The destination port
src/net/majorkernelpanic/streaming/MediaStream.java