From: Clemens Ladisch <clemens@ladisch.de>
To: Cameron Stone <camerons.lists@cse.unsw.edu.au>
Cc: alsa-devel@alsa-project.org
Subject: Re: Support for USB-Audio devices with Multiple configurations?
Date: Tue, 19 May 2009 09:15:46 +0200 [thread overview]
Message-ID: <4A125CA2.7010806@ladisch.de> (raw)
In-Reply-To: <4A111C9D.4010301@cse.unsw.edu.au>
Cameron Stone wrote:
> Clemens Ladisch wrote:
> > Each alternate setting has its own set of descriptors; you can
> > change _any_ parameter in those descriptors.
>
> Great, I've got this working now.
>
> However, how do I ask arecord to use a particular alternate setting? I'd
> like to have two alternate settings with the same number of channels,
> but different microphones enabled. Is that possible?
This difference does not show up in the altsettings' descriptors, so the
driver would not know which one to choose.
This needs to be a mixer control (a selector unit).
HTH
Clemens
prev parent reply other threads:[~2009-05-19 7:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-14 6:32 Support for USB-Audio devices with Multiple configurations? Cameron Stone
2009-05-15 7:07 ` Clemens Ladisch
2009-05-15 8:50 ` Cameron Stone
2009-05-15 17:21 ` Clemens Ladisch
2009-05-18 8:30 ` Cameron Stone
2009-05-19 7:15 ` Clemens Ladisch [this message]
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