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From: Felix Homann <fexpop@web.de>
To: alsa-devel@alsa-project.org
Subject: How to create an Alsa mixer for a USB device w/o mixer descriptor?
Date: Wed, 17 Mar 2010 09:37:13 +0100	[thread overview]
Message-ID: <4BA094B9.8010907@web.de> (raw)

Hi,

as posted earlier, I've got a USB device (Fast Track Ultra 8R) wich 
*has* a mixer unit but doesn't have a descriptor for it. It's operated 
by standard control messages. Although I'm specifically interested in 
my  device, I guess there are many more USB interfaces out there with 
similar issues.

So in general:
What's the best way to build a Alsa mixer for such devices. Should one 
bypass all the descriptor parsing and build a mixer specifically for the 
device in interest? Or should one think about  passing a "fake" 
descriptor to the mixer build process?

Any ideas?


Kind regards,

Felix

             reply	other threads:[~2010-03-17  8:37 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-17  8:37 Felix Homann [this message]
2010-03-17 11:28 ` How to create an Alsa mixer for a USB device w/o mixer descriptor? Daniel Mack
2010-03-17 11:47   ` Felix Homann
2010-03-17 16:11     ` Daniel Mack

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