public inbox for alsa-devel@alsa-project.org
 help / color / mirror / Atom feed
From: sylvain.bertrand@gmail.com
To: alsa-devel@alsa-project.org
Subject: USB-Audio.conf routing and dmix
Date: Sat, 9 May 2015 00:20:17 +0000	[thread overview]
Message-ID: <20150509002017.GB18945@freedom> (raw)

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


regards,

-- 
Sylvain BERTRAND

             reply	other threads:[~2015-05-09  0:20 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-09  0:20 sylvain.bertrand [this message]
2015-05-11 19:57 ` USB-Audio.conf routing and dmix sylvain.bertrand
2015-05-13  9:24   ` Clemens Ladisch
2015-05-13 11:32     ` sylvain.bertrand
2015-05-15  2:07       ` sylvain.bertrand
2015-05-15  5:53         ` Alexander E. Patrakov
2015-05-15  5:58           ` Alexander E. Patrakov
2015-05-15  8:13 ` Raymond Yau
2015-05-15 13:16   ` sylvain.bertrand

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20150509002017.GB18945@freedom \
    --to=sylvain.bertrand@gmail.com \
    --cc=alsa-devel@alsa-project.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox