[alsa-devel] usbaudio: Support for USB audio v2.0 devices
clemens at ladisch.de
Mon Feb 22 18:40:39 CET 2010
Daniel Mack wrote:
> I've been working on support for USB devices compliant to audio class
> v2.0 and would like to share what I got.
Just out of curiousity: what device are you testing this with?
> My first step was to clean up most of the existing descriptor parsers
> by moving away from anonymous byte array access to real structs so we
> can see which fields we're actually dereferencing.
Please use the structures in <linux/usb/audio.h>.
> * Supported sample formats are now reported as 32bit bitmap rather than
> as a fixed value. For now, this is worked around by choosing just one
> of them.
I'll write a patch to change struct audioformat to use a bitmask.
> Let me know what you think.
Haven't tested yet, but the patches look fine.
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