Speex dev - Jan 2007 - Integer Version with low bit rate for Linux Kernel?

Hello Segher Boessenkool

 

I am writing a Linux Kernel Device-Driver for a low bitrate radio link,
connected via USB to the PC. Incoming VOIP- IP Pakets go directly to the
network interface of the kernel module. A transcoding from e. g. PCM or
G723.1 to e. g. speex 2.15 is necessary, and also a header reduction
RTP/UDP/IP.

 

Egon

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Hello,

On 1/25/07, MOENCH, EGON - PFHO <EGON.MOENCH@de.thalesgroup.com>
wrote:
> I am writing a Linux Kernel Device-Driver for a low bitrate radio link,
> connected via USB to the PC. Incoming VOIP- IP Pakets go directly to the
> network interface of the kernel module. A transcoding from e. g. PCM or
> G723.1 to e. g. speex 2.15 is necessary, and also a header reduction
> RTP/UDP/IP.
Why this transcoding is necessary *inside* kernel? Why this could not be
done in userspace library?

Moving such task to kernel may reduce its stability - one error and your
system is down.

-- 
Regards,
Alexander Chemeris.