Greeting PJSIP developers.

we have MIPS32 based audicodes SOC that runs on 125 MHz clock.also we have
one TI DSP interfaced to this SOC which works with A-law speech and feeds
to analog telephones. we have created 4 wave-players and 4 wave writers .we
put speech to DSP(instead of file ) in wave writer's  file_put_frame(),and
get speech from DSP in wave player file_get_frame().we are using master
clock
following is our configuration (i .e every 20 ms ). our DSP interface is
fast enough(100 MHz static memory controller)

--clock-rate=8000
--null-audio
--ec-tail=0
--dis-codec=GSM
--dis-codec=speex
--dis-codec=G722

with this configuration,  4 wave players alone take 45% CPU and when we
connect wave writer ,then sound gets disturbed,and cpu usage become 60%

we have put all CPU performance FAQ optimization techniques but no
improvement..
how can i make it work at-least for 4 calls.
will clock thread per call work here .. ??

Please help,

Regards
Kiran Bhosale

Hi Khiran,

I had an issue with (MP3) writer a while ago on a high latency drive
(Samba over VPN). As writer sits directly in the sound path, any 'long'
processing starts disturbing the sound in the conference bridge. My
solution was to put the writing into separate thread and that fixed the
issue. No idea if you're facing the same problem, but you could check
the old posts where I sent a proposed MP3 writer fix (same idea could
easilly be applied to WAV writer).

Greets, Toni