[Freeswitch-dev] Multicast stream listener module

MohammedShehzad pmhshz at gmail.com
Mon Feb 22 20:58:56 PST 2010


How can I use L16? Please let me some reference.

On Tue, Feb 23, 2010 at 1:12 AM, Anthony Minessale <
anthony.minessale at gmail.com> wrote:

> because you have no signaling to negotiate payload types its best to limit
> this to PCMU.
> Your only other option is to use L16 (raw signed linear)
>
>
> On Mon, Feb 22, 2010 at 5:53 AM, MohammedShehzad <pmhshz at gmail.com> wrote:
>
>>
>> Hello everybody,
>> I am working on multicast listener format module, So that Freeswitch can
>> listen on multicasted stream as example below:
>> <action application="playback" data="rtp://224.168.168.168:34567"/>
>> Please see on thread named 'stream a file multicast with mod_esf' on
>> http://lists.freeswitch.org/pipermail/freeswitch-users/2010-February/026163.html
>>
>> I am testing that module against the audio multicasted by mod_esf module.
>> I got some success with help of existing mod_native_file module, and I
>> able to receive and play the multicasted RAW PCMU RTP (modified the skel of
>> format module provided by brian), so that caller can hear the multicast by
>> other Freeswitch server, but when i change the caller's codec from PCMU to
>> something else, it breaks.
>> Then 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 reading file, then it would surely work.
>> Please Let me know your ideas on this, as I don't know how exactly
>> Freeswitch encoding-decoding works?
>>
>> --
>>
>> -MohammedShehzad
>>
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>>
>
>
> --
> Anthony Minessale II
>
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-- 

-MohammedShehzad
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