SDPAttribute - The contents of the SDP "a=" field which contains a
key/value pair.
SDPBandwidth - The contents of the SDP "b=" field which specifies
the proposed bandwidth to be used by the session or media.
SDPConnection - The contents of the SDP "c=" field which contains
connection data.
SDPKey - The contents of the SDP "k=" field which is used to convey
encryption keys.
SDPMedia - The contents of the SDP "m=" field with all related fields.
SDPMessage - The GstSDPMessage helper functions makes it easy to parse
and create SDP messages.
SDPOrigin - The contents of the SDP "o=" field which gives the
originator of the session (their username and the address of the user's host) plus a session id and session version number.
SDPTime - The contents of the SDP "t=" field which specify the start and
stop times for a conference session.
SDPZone - The contents of the SDP "z=" field which allows the sender to
specify a list of time zone adjustments and offsets from the base time.
