Subject: Re: [ecasound] xrun with rtnull and 2.1.dev8
From: Kai Vehmanen (k_AT_eca.cx)
Date: Fri May 10 2002 - 14:24:33 EEST
On Sun, 5 May 2002, Julien Patrick Claassen wrote:
> I got xruns all the time I treid:
> ecasound -c -i /dev/dsp -o rtnull (-ev)
> this only occured with 2.1.dev8. Otherwise it seems working correctly.
Yup, 2.1dev8 contains a rewritten rtnull implementation so it's possible
that the behaviour has changes. How about:
ecasound -i null -o rtnull
ecasound -i rtnull -o null
Do you get any xruns? Btw; if you just want to analyze the line-in
signal, it's better to use:
ecasound -i /dev/dsp -o null -ev
You can think of "null" as a file type, while "rtnull" is a
soundcard/device type. When used as inputs both behave like /dev/zero
(produce a silent signal), and as /dev/null when used as outputs (accepts
all data but doesn't do anything with it). "rtnull" is useful when you
need to simulate a soundcard, but for some reason don't want to use a real
device (ALSA, JACK, aRts, OSS, etc).
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