Paul Davis wrote:
Hello
I work at "hfkernel" by Tom Sailer, a program for pactor/rtty (soundcard =
ham=20
radio digimodes). It seems complicated, because it uses realtime scheduli=
ng,=20
select(), mmap(), and runs in 3 threads.=20
It was made in 1996 for OSS; I am trying to get it running with ALSA.=20
JACK already does this kind of stuff. You'd save yourself major
headaches by starting off doing it as a JACK client. Alternatively,
use the JACK source as a guide, although its very complex because it
is intended to handle many channels in a very robust way, with
complete xrun detection.
http://jackit.sf.net/
another alternative source of ideas would be ecasound's own ALSA code.
--p
I agree with Paul, that JACK would be a good place to work from, because
it already deals with all the complicated realtime full duplex details,
and leaves a relatively simple interface for the user application.
Cheers
James
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