[alsa-devel] [PATCH 0/3] alsa-lib - improve surround 2.1 support
tiwai at suse.de
Fri Feb 21 16:50:59 CET 2014
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.
> 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(-)
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