Could somebody please help out to answer the below queries i have.
Thanks n regards,
Manjeet
--- On Wed, 1/28/09, manjeet soodan <manjeetss1 at yahoo.com> wrote:
From: manjeet soodan <manjeetss1@xxxxxxxxx>
Subject: Help needed in Media Proxy implementation
To: pjsip at lists.pjsip.org
Date: Wednesday, January 28, 2009, 6:36 PM
Hi,
I am working on a Media Proxy app which we do the RTP(Encode/Decode) plus RTCP message translation between two servers.
The questions i have are :-
1) I will have to create 2 streams (on top of 2 transports) talking to each of the two servers.
But i am confused about Get_Frame/Put_Frame callbacks and on_rx_rtp/on_rx_rtcp callback. which one i have to use?? What is the difference between the two and when to use each?
Similarly when we shall use
pjmedia_port_get_frame() & pjmedia_port_put_frame() OR pjmedia_transport_send_rtp() & pjmedia_transport_send_rtcp()?
Can we use on_rx_rtp/on_rx_rtcp? with streams too?
2) As pjmedia_stream_create, calls the "pjmedia_transport_attach" and assigns its own on_rx_rtp/on_rx_rtcp callbacks?
Do i have to again call "pjmedia_transport_attach" in my application code and give my own
on_rx_rtp/on_rx_rtcp callbacks to receive rtp/rtcp?
Right now the seq of APIs i have called is :-
pj_init(), pj_caching_pool_init, pj_pool_create, pjmedia_endpt_create (call twice as i need 2 endpoints talking to 2 servers), initcodecs (register the codecs i need for each endpoint like pjmedia_codec_g711_init and
pjmedia_codec_ipp_init), pjmedia_transport_udp_create2 (called twice to create 2 transports to talk to 2 servers), pjmedia_stream_create(), pjmedia_transport_attach(), defined my own on_rx_rtp, on_rx_rtcp.
Please let me know if the sequence of API call is correct?
Am new to PJMedia stack, so will highly appreciate any help provided?
Thanks n regards,
Mannu
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