[Freeswitch-users] stream a file multicast with mod_esf

MohammedShehzad pmhshz at gmail.com
Mon Feb 22 03:56:55 PST 2010


Actually I don't want to change anything from Multicaster, I am talking
about the changes required on Listener side (the format module I am going to
develo). I think I should discuss further on developer's mailing list,
please let me know you ideas there.

Thanks for your response.

On Mon, Feb 22, 2010 at 12:49 PM, Michael Jerris <mike at jerris.com> wrote:

> 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 at 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 at gmail.com>wrote:
>>
>>>
>>>
>>> On Fri, Feb 19, 2010 at 12:59 PM, Michael Jerris <mike at 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.
>>
>>
>>
>
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>


-- 

-MohammedShehzad
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