[alsa-devel] [PATCH 0/2] alsa-lib surround 2.1 support

[David Henningsson]

I'm currently experimenting with different ways to make the system autodetect
if surround2.1 is available through a four channel setup (e g laptop surround
speaker) and fallback to 5.1 if it isn't.

It's a bit tricky, especially given that the LFE speaker could be on left channel,
right channel, and both, so meanwhile, this fallback should be better than nothing
and help establish a standard for upper parts of the stack (i e PulseAudio).

David Henningsson (2):
  conf: Add basic infrastructure for 2.1 surround sound
  conf: Add surround 2.1 support to all cards

 src/conf/alsa.conf               |  3 ++
 src/conf/cards/ATIIXP-SPDMA.conf |  1 +
 src/conf/cards/ATIIXP.conf       |  1 +
 src/conf/cards/Audigy.conf       |  1 +
 src/conf/cards/Audigy2.conf      |  1 +
 src/conf/cards/Aureon51.conf     |  1 +
 src/conf/cards/Aureon71.conf     |  1 +
 src/conf/cards/CA0106.conf       |  1 +
 src/conf/cards/CMI8738-MC6.conf  |  1 +
 src/conf/cards/CMI8738-MC8.conf  |  1 +
 src/conf/cards/CMI8788.conf      |  2 +-
 src/conf/cards/CS46xx.conf       |  1 +
 src/conf/cards/EMU10K1.conf      |  1 +
 src/conf/cards/EMU10K1X.conf     |  1 +
 src/conf/cards/FM801.conf        |  1 +
 src/conf/cards/FireWave.conf     |  1 +
 src/conf/cards/HDA-Intel.conf    |  1 +
 src/conf/cards/ICE1712.conf      |  1 +
 src/conf/cards/ICE1724.conf      |  1 +
 src/conf/cards/ICH.conf          |  1 +
 src/conf/cards/ICH4.conf         |  1 +
 src/conf/cards/Loopback.conf     |  1 +
 src/conf/cards/NFORCE.conf       |  1 +
 src/conf/cards/SB-XFi.conf       |  1 +
 src/conf/cards/SI7018.conf       |  1 +
 src/conf/cards/USB-Audio.conf    |  1 +
 src/conf/cards/VIA8233.conf      |  1 +
 src/conf/cards/VIA8233A.conf     |  1 +
 src/conf/cards/VIA8237.conf      |  1 +
 src/conf/pcm/Makefile.am         |  2 +-
 src/conf/pcm/surround21.conf     | 62 ++++++++++++++++++++++++++++++++++++++++
 31 files changed, 94 insertions(+), 2 deletions(-)
 create mode 100644 src/conf/pcm/surround21.conf

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1.9.rc1