You would just change the PCMU to whatever codec you want.  This should have nothing to do with file io, take a look at the line that has PCMU hardcoded, thats all you should need to change.

Mike

On Feb 22, 2010, at 1:47 AM, MohammedShehzad wrote:

Yes, PCMU is hardcoded currently from multicaster. I looked into mod_sndfile for decoding PCMU to other codec, but it seems that module is using libsndfile, which reads sound file directly and decode them to L16. If something similar to libsndfile is available, which work on stream instead of file io, then it would surely work.

I don't know how exactly Freeswitch's codec structures & functions work, I am sure decoding can be done by using that, but don't know how to use them.

On Sun, Feb 21, 2010 at 7:17 AM, Michael Jerris <mike@jerris.com> wrote:
You will need to create the codec for what you need, I think it is hardcoded in there to PCMU at the moment, correct?  This will of course need to match the stream its reading.

Mike

On Feb 20, 2010, at 12:50 AM, MohammedShehzad wrote:



On Fri, Feb 19, 2010 at 1:32 PM, MohammedShehzad <pmhshz@gmail.com> wrote:


On Fri, Feb 19, 2010 at 12:59 PM, Michael Jerris <mike@jerris.com> wrote:
Listening on multicast is noting special for multicast, it is just
like reading any other udp socket

Mike

Correct, but I have to play those audio stream back to caller taking care of the audio codec  and other things, do anybody have any idea in that part? Please let me know that.
--

-MohammedShehzad

I am able to receive the play the multicasted RAW PCMU RTP (modified the skel of format provided by brian), so that caller can hear the multicast which done by other Freeswitch server using mod_esf application, but when i change the caller's codec from PCMU to something else, it breaks.