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<tt>Hi Alain,<br>
<br>
Is is legal to have same codec ID more than once in the the `m`
line ?? I see that 18 is mentioned like 3 times :-/.<br>
<br>
Anyhow, for what you need, what you should do is:<br>
* iterate through the `a` lines using the {sdp.line}
transformation<br>
* use a a regexp to check if the current `a` line contains
"annexb=yes"<br>
* if such a line was found, go back (decrementing the index of `a`
lines) and search (backwards) the first `rtpmap` line<br>
* once the rtpmap line found, use the {re.subst,reg_exp}
transformation to get the codec ID from the line<br>
* after that, simply use the codec delete function<br>
<br>
Best regards,<br>
</tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a>
OpenSIPS Summit, Amsterdam, May 2020
<a class="moz-txt-link-freetext" href="https://www.opensips.org/events/Summit-2020Amsterdam/">https://www.opensips.org/events/Summit-2020Amsterdam/</a>
OpenSIPS Bootcamp, Miami, March 2020
<a class="moz-txt-link-freetext" href="https://opensips.org/training/OpenSIPS_Bootcamp_2020/">https://opensips.org/training/OpenSIPS_Bootcamp_2020/</a>
</pre>
<div class="moz-cite-prefix">On 2/11/20 3:35 PM, Alain Bieuzent
wrote:<br>
</div>
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cite="mid:6E807D42-2224-4C8B-9D10-2B505D0B6D99@free.fr">
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<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US">Hi
all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US">I
received an SDP with several codec G729 (with annexb=yes and
annexb=no)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">=0<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">o=HNET 600152000
100017799 IN IP4 0.0.0.0<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">s=0_CALLMEDIA<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">i=HNET<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">c=IN IP4 0.0.0.0<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">t=0 0<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">m=audio 64976 RTP/AVP 18
18 18 8 101<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=rtpmap:18 G729/8000<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=fmtp:18 annexb=yes<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=ptime:20<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=rtpmap:18 G729/8000<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=fmtp:18 annexb=no<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=rtpmap:18 G729/8000<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=fmtp:18 annexb=yes<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=rtpmap:8 PCMA/8000<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=rtpmap:101
telephone-event/8000<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=fmtp:101 0-15<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-language:FR">a=sendonly<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US">How
can I delete codec where annexb=yes ?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt" lang="EN-US">Thanks
for your help<o:p></o:p></span></p>
</div>
<br>
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