2008-11-23 02:29:05 +01:00
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# ALSA sound support.
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2009-10-12 19:27:57 +02:00
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{ config, pkgs, ... }:
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with pkgs.lib;
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2007-03-01 01:36:00 +01:00
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let
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2009-07-16 17:01:56 +02:00
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inherit (pkgs) alsaUtils;
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soundState = "/var/lib/alsa/asound.state";
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in
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{
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###### interface
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2011-09-14 20:20:50 +02:00
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2008-11-23 02:29:05 +01:00
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options = {
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2011-09-14 20:20:50 +02:00
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2008-11-23 02:29:05 +01:00
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sound = {
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enable = mkOption {
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default = true;
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2009-07-16 17:01:56 +02:00
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description = ''
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2008-11-23 02:29:05 +01:00
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Whether to enable ALSA sound.
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2009-07-16 17:01:56 +02:00
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'';
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2009-10-12 19:27:57 +02:00
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merge = mergeEnableOption;
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2008-11-23 02:29:05 +01:00
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};
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2011-09-14 20:20:50 +02:00
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2010-03-03 15:01:13 +01:00
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enableOSSEmulation = mkOption {
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default = true;
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2012-08-17 17:00:14 +02:00
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description = ''
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Whether to enable ALSA OSS emulation (with certain cards sound mixing may not work!).
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'';
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2010-03-03 15:01:13 +01:00
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};
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2007-03-01 01:36:00 +01:00
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2008-11-23 02:29:05 +01:00
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};
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2011-09-14 20:20:50 +02:00
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2008-11-23 02:29:05 +01:00
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};
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2009-07-16 17:01:56 +02:00
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###### implementation
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2011-09-14 20:20:50 +02:00
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2009-07-16 17:01:56 +02:00
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config = mkIf config.sound.enable {
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2011-09-14 20:20:50 +02:00
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2011-11-04 18:40:00 +01:00
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environment.systemPackages = [ alsaUtils ];
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2008-11-23 02:29:05 +01:00
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2012-03-17 18:26:17 +01:00
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boot.kernelModules = optional config.sound.enableOSSEmulation "snd_pcm_oss";
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2009-10-12 20:09:34 +02:00
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jobs.alsa =
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2012-08-17 17:00:14 +02:00
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{ description = "ALSA Volume Settings";
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startOn = "stopped udevtrigger";
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2008-11-23 02:29:05 +01:00
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2009-07-16 17:01:56 +02:00
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preStart =
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''
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mkdir -m 0755 -p $(dirname ${soundState})
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2008-11-23 02:29:05 +01:00
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2009-07-16 17:01:56 +02:00
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# Restore the sound state.
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2012-03-18 03:36:21 +01:00
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${alsaUtils}/sbin/alsactl --ignore -f ${soundState} restore
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2009-07-16 17:01:56 +02:00
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'';
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2007-03-01 01:36:00 +01:00
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2009-07-16 17:01:56 +02:00
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postStop =
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''
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# Save the sound state.
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2012-03-18 03:36:21 +01:00
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${alsaUtils}/sbin/alsactl --ignore -f ${soundState} store
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2009-07-16 17:01:56 +02:00
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'';
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};
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2011-09-14 20:20:50 +02:00
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2008-11-23 02:29:05 +01:00
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};
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2007-03-01 01:36:00 +01:00
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}
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