[alsa-devel] USB-Audio.conf routing and dmix

[sylvain.bertrand at gmail.com]

On Sat, May 09, 2015 at 12:20:17AM +0000, sylvain.bertrand at gmail.com wrote:
> Hi,
> 
> I have a bose USB audio 5.1 device, a generic USB audio device.
> 
> I noticed that the proper channels routing was missing from the default generic
> USB pcm, but dmix was used. And for the surround pcms I noticed it was the
> other way around!
> 
> I did modify the default pcm to include a routing plugin. I put 8 channels in
> the routing plugin. I guess the proper way would be to detect the hw card
> number of channels and select a route plugin configuration with the correct
> count of channels (maybe their is a function to get that info?).
> 
> I linked the surround51 and surround71 pcms with the 'disable-able' dmix
> section from the default pcm.
> 
> I did not touch the surround40* pcms, surround pcms which are specific to some
> cards and the iec958 ones.
> 
> http://filebin.ca/214UTT8fBnUm/USB-Audio.conf

did I post on the right mailing list for alsa-lib default configuration improvment?

-- 
Sylvain