31 Mar
2009
31 Mar
'09
5:43 p.m.
2009/3/31 Ovidiu Sas <osas(a)voipembedded.com>om>:
Hello Klaus,
No, there isn't. But it shouldn't be that hard to add one using the
sdp parser from the core.
Once the sdp is parsed, the lumps must be added (the relevant pointers
to the codecs and attributes are already saved in the parsed sdp
structure).
Note that the only line to be modified is the "m=..." line, which
specifies which codes are offered.
Example:
-------------------------------
v=0
o=root 3836 3836 IN IP4 222.220.19.45
s=session
c=IN IP4 222.220.19.45
b=CT:384
t=0 0
m=audio 12342 RTP/AVP 18 0 8 3 101
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:3 GSM/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv
m=video 10482 RTP/AVP 34 103 99
a=rtpmap:34 H263/90000
a=rtpmap:103 h263-1998/90000
a=rtpmap:99 H264/90000
a=sendrecv
-------------------------------
To dissable GSM in the above SDP the only modification would be:
m=audio 12342 RTP/AVP 18 0 8 101
--
Iñaki Baz Castillo
<ibc(a)aliax.net>