Hi yuming,
Thanks for you response and suggestion. Now, maybe it is impossible for us to modify the stuff in PJSIP.
f is a attribute line which is defined in GB28181 pubilished by chinese government. Maybe some time later
this standard becomes a global standard. I will try my best to do this work.
Thanks,
At 2013-07-03 14:42:03,"Yuming Zheng" <zhengyumingnanjing at gmail.com> wrote:
Hi Chenhui Xu ,
As f is not a standard abbreviation of any SDP element,so it can not recognized by pjsip.
If you want to do that anyway,you need add something with pjmedia_sdp_media and deal with it in the function you had tried before.
Does the standard could not satisfied your needs?What is the purpose of f?
BR,
2013/7/3 Chenhui Xu <xch0929 at 126.com>
I did a test that define pj_str_t sdp={ { sdp string}, len};
and call the pjmedia_sdp_parse to construct the SDP with the sdp str which defined staticlly.
but it seems that the non standard sdp line has been deleted when the pjsip library processes the request..
Chenhui Xu
At 2013-07-03 11:52:15,"Chenhui Xu" <xch0929 at 126.com> wrote:
Hi,
Recently, I was involved in a project which is based on PJSIP, and I encountered a issue that we have some non standard SDP lines, (please refer to the last bolder line)
v=0
o=Chen 1372821751 1372821751 IN IP4 192.168.77.109
s=Chen
c=IN IP4 192.168.77.109
t=0 0
m=video 5055 RTP/AVP 102
a=rtpmap:102 H264/90000
a=sendonly
f=v/2/5/0/1/0a///
I did not find any API which manage to construct this line, so I created a sdp then call pjmedia_sdp_print() to print the SDP into a buffer, then I just strcat(buffer, "f=v/2/5/0/1/0a///\r\n") and call
pjmedia_sdp_parse() to construct the new sdp. But it seems does not work.
Any one can give some comments?
Thanks,
Chenhui Xu
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