31 Mar
2009
31 Mar
'09
4:12 p.m.
Hi!
Are there any features in K to remove a codec from the SDP? (execept
manual removing with textops)?
thanks
klaus
31 Mar
31 Mar
4:25 p.m.
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).
Regards,
Ovidiu Sas
On Tue, Mar 31, 2009 at 9:12 AM, Klaus Darilion
<klaus.mailinglists(a)pernau.at> wrote:
Hi!
Are there any features in K to remove a codec from the SDP? (execept
manual removing with textops)?
thanks
klaus
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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>
6:23 p.m.
On Tue, Mar 31, 2009 at 10:43 AM, Iñaki Baz Castillo <ibc(a)aliax.net> wrote:
2009/3/31 Ovidiu Sas <osas(a)voipembedded.com>om>:
That will work, but the proper thing to do would be to also remove the
'a=rtpmap:3 GSM/8000' line.
Regards,
Ovidiu Sas
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
7:03 p.m.
2009/3/31 Ovidiu Sas <osas(a)voipembedded.com>om>:
Sure, but It would be more complex :)
and as far as I expect it shouldn't be required (never tested anyway).
--
Iñaki Baz Castillo
<ibc(a)aliax.net>
To dissable
GSM in the above SDP the only modification would be:
m=audio 12342 RTP/AVP 18 0 8 101
That will work, but the proper thing to do would be to also remove the
'a=rtpmap:3 GSM/8000' line.
5715
days inactive
5715
days old
4 comments
3 participants
participants (3)
-
Iñaki Baz Castillo -
Klaus Darilion -
Ovidiu Sas