Subject: Re: [LAU] Newer USB audio interfaces

From: Clemens Ladisch <cladisch@...> · Date: Wednesday, May 6, 2009 - 2:15 pm

Patrick Shirkey wrote:

quoted text> Clemens Ladisch wrote:

> > Patrick Shirkey wrote:

> > > "ALSA usb-audio drivers are the defacto standard for proving usb

> > > specifications compliance.

> >

> > So you are volunteering to write the code?  ;-)

>

> Credit where credit is due. I am currently under the impression that you

> have already made substantial headway in this matter over the past

> several years.
Most of my changes are for devices that deviate slightly from the

specification.  There are other devices that have more fundamental

changes in their design, such as, e.g., M-Audio devices where multiple

streams have to be configured together, or the UA-101 where the driver

has to derive the playback sample clock from the recording stream; and

I have not added support for those features.
As it happens, Roland and M-Audio sat on the committee and put exactly

those features into the 2.0 specification.
Best regards,

Clemens

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