How to integrate DSP device with PJSIP

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Hi,

Thanks for your replies. I think it's a typical scenario to use DSP in the
embedded system, and I'm wondering if there's any success example. We did
not bought the total solution, so we had to develop the VoIP functionality
by ourselves.

BR.

On Sat, May 26, 2012 at 12:50 PM, Benny Prijono <bennylp at teluu.com> wrote:

> On Thu, May 17, 2012 at 9:26 PM, Jeff Brower <jbrower at signalogic.com>wrote:
>
>> Robin-
>>
>> > Now we have ported PJSIP to the MIPS embedded platform under Linux
>> > environment, and now we want to integrate the PJSIP stack with our DSP
>> > device since there's no sound device on the board. Our DSP has the
>> ability
>> > to pack data to RTP and decode from RTP flow, in that case, what's the
>> best
>> > practice should we take?
>>
>> The codec takes the real work, so simply call encode() and decode()
>> functions using your DSP.  Echo-can maybe is
>> another function to move there at some point, if needed...
>>
>> In the tightly coupled architecture that you describe (similar to an
>> SoC), where the MIPS CPU has the IP/UDP interface
>> and the DSP is "attached" to the MIPS in some way (shared mem, FIFO,
>> etc), it makes sense to only run "compute
>> intensive" code on the DSP, and keep everything else on the MIPS.
>>
>
> Just wanted to point out that in 2.0 we added support for integrating
> PJSUA-LIB with third party media stack. IMO this is the best option to
> take, as you'd still have all the high-level signaling and NAT traversal
> features of PJSUA-LIB while offloading the media stuff in the DSP. Have a
> look at http://trac.pjsip.org/repos/wiki/3rd_Party_Media_20
>
> cheers,
>  Benny
>
>
>
>
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>
>


-- 
Best Regards
Robin Liu
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