[alsa-devel] [PATCH 0/3] alsa-lib - improve surround 2.1 support

[Takashi Iwai]

At Fri, 21 Feb 2014 16:24:19 +0100,
David Henningsson wrote:
> 
> So, in order to support 2.1 surround on both 4-channels (e g FL FR LFE LFE,
> on internal subwoofer) and 6-channels (e g FL FR RL RR C LFE, on desktops
> with 5.1 out), I needed to make the route plugin more chmap aware.
> 
> This also included allowing a new syntax for the ttable, which I think is
> quite nice. The new syntax also falls back to ALSAs standard chmap in case
> the hardware does not support it.

The idea looks great, a nice improvement.
Spotted a few trivial things I posted individually, but in general
it's in a good shape.


thanks,

Takashi


> 
> David Henningsson (3):
>   route: Allow chmap syntax for slave channels in ttable
>   route: Select slave chmap based on ttable information
>   conf: Allow 2.1 surround to use different number of channels
> 
>  src/conf/pcm/surround21.conf |   7 +-
>  src/pcm/pcm_route.c          | 304 ++++++++++++++++++++++++++++++++++++++-----
>  2 files changed, 271 insertions(+), 40 deletions(-)
> 
> -- 
> 1.9.0
>