Subject: Re: [ecasound] Differant alsa inputs ..
From: Julien Patrick Claassen (julien_AT_c-lab.de)
Date: Mon Mar 24 2003 - 22:22:01 EET
On Mon, 24 Mar 2003, C.Lee Taylor wrote:
> Greetings again ...
> I has hoping soembody could explain the differance, if there is one?
> ... between ...
> -i alsahw,0,1
> -i alsa,default
> -i alsaplugin,1
alsaplugin let's you do something like:
ecasound -i alsaplugin,0,1 ...
And you don't need to specify format (-f) parameters. Because the alsaplugin
input keeps count of channels and so on... With alsa you select named
pcm-devices. Thus you really CAN do:
ecasound -i alsa,default ...
I still didn't totally figure out, how to work this though. But aplay -L
gives you a list of all named pcm-devices. But I've seen it, it looks really
ugly. But once you're fmailiar with it it's ok too.
The alsahw-audio-object finally directly accesses alsa-devices and
subdevices. But you need to care for bytes, channel-count, samplingrate...
Sometimes this might be what you want. For example with my card it is the best
In general if you find a syntax for all three of them, which means the same,
you can choose. I think then there is no difference in the result.
> I know they select differant inputs, but which is better to use between
> alsa, alsahw and alsaplugin?
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Julien Patrick Claassen
Phone: (+49) 5251 60 6060
Fax: (+49) 5251 60 6065
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