[SFLphone] hardcoded samplerate for pulseaudio

[Alexandre Savard]

Hi Peter

SFLphone sample rate is fixed at 44.1KHz. Changing this value may bring
up issues related to data resampling in RTP/IAX sessions, which is not
as flexible as it should.

We are currently working on a more flexible audio sampling rate
management in SFLphone as it directly impacts CPU performances
especially during conference calls (which currently in development for
0.9.7 and should be released at the end of october).

Our application deals with several audio codec sampling rate (8KHz,
16KHz, 32KHz, and even 44.1KHz). We need to open SFLphone's AudioLayer
at the maximal codec sampling rate to avoid having to close and reopen
the AudioLayer at a different rate during a call, which could occur if
you have two calls having different codecs.

Concerning your issue, after the changes described above, you will be
able to change AudioLayer's sampling rate for a specific value.


Thanks for your interest in the project. 

Alexandre