G729

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Dear Fabio,

Do you have an idea on what Nokia E SIP client uses for sound and
codecs?...is it it APS?...

Regards,

Manoj

-----Original Message-----
From: pjsip-bounces@xxxxxxxxxxxxxxx
[mailto:pjsip-bounces at lists.pjsip.org]On Behalf Of Fabio Pietrosanti
(naif)
Sent: Thursday, August 21, 2008 9:49 PM
To: pjsip list
Subject: Re: G729


Nanang Izzuddin wrote:
> Hi Fabio,
>
> AFAIK, S60's APS is more sound device library rather than codec
> library, while IPP codecs is purely codecs implementation library. So
> I think we cannot use the same approach. As Benny has ever mentioned,
> it is possible to use APS codecs in pjmedia, but it will lack some
> pjmedia features (i.e: conference and other PCM level media processing
> in pjmedia).
>
> It is possible to create S60 native/hardware codec using same approach
> as in IPP codecs wrapping as long as there is 'pure' codec API in
> S60/Symbian. (There is CMMFCodec class that seems suit this. Not sure
> if it is working in S60 3rd ed.)
>
That's true but unfortunately on the most widespread devices, like
(Nokia and Samsung) Symbian 9.x S60 3rd edition the CMMFCodec it's only
available trough some SDK plug-in, not on all FPx releases and not on
all phones.

That's the reason why i strongly suggest to use APS, because it's most
widely available on the phones, even where CMMFCodec is not.

The theory:
http://www.symbian.com/developer/techlib/v9.2docs/doc_source/reference/refer
ence-cpp/MMF/CMMFCodecClass.html

The practice :( :
http://wiki.forum.nokia.com/index.php/Codecs
http://wiki.forum.nokia.com/index.php/TSS000457_-_Configuring_CMMFCodec_for_
encoding_audio_to_AMR
http://wiki.forum.nokia.com/index.php/Encoding_and_Decoding_using_MMF_based_
Codec(_CMMFCodec_)


Fabio


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