diff options
Diffstat (limited to 'nixos/modules/services/audio/alsa.nix')
| -rw-r--r-- | nixos/modules/services/audio/alsa.nix | 144 |
1 files changed, 24 insertions, 120 deletions
diff --git a/nixos/modules/services/audio/alsa.nix b/nixos/modules/services/audio/alsa.nix index b002cb1274ac3..fac0012b666d4 100644 --- a/nixos/modules/services/audio/alsa.nix +++ b/nixos/modules/services/audio/alsa.nix @@ -1,134 +1,38 @@ # ALSA sound support. { config, lib, pkgs, ... }: -with lib; - -let - - inherit (pkgs) alsa-utils; - - pulseaudioEnabled = config.hardware.pulseaudio.enable; - -in - { imports = [ - (mkRenamedOptionModule [ "sound" "enableMediaKeys" ] [ "sound" "mediaKeys" "enable" ]) + (lib.mkRemovedOptionModule [ "sound" ] "The option was heavily overloaded and can be removed from most configurations.") ]; - ###### interface - - options = { - - sound = { - - enable = mkOption { - type = types.bool; - default = false; - description = '' - Whether to enable ALSA sound. - ''; - }; - - enableOSSEmulation = mkOption { - type = types.bool; - default = false; - description = '' - Whether to enable ALSA OSS emulation (with certain cards sound mixing may not work!). - ''; - }; - - extraConfig = mkOption { - type = types.lines; - default = ""; - example = '' - defaults.pcm.!card 3 - ''; - description = '' - Set addition configuration for system-wide alsa. - ''; - }; - - mediaKeys = { - - enable = mkOption { - type = types.bool; - default = false; - description = '' - Whether to enable volume and capture control with keyboard media keys. - - You want to leave this disabled if you run a desktop environment - like KDE, Gnome, Xfce, etc, as those handle such things themselves. - You might want to enable this if you run a minimalistic desktop - environment or work from bare linux ttys/framebuffers. - - Enabling this will turn on {option}`services.actkbd`. - ''; - }; - - volumeStep = mkOption { - type = types.str; - default = "1"; - example = "1%"; - description = '' - The value by which to increment/decrement volume on media keys. - - See amixer(1) for allowed values. - ''; - }; - - }; - - }; - + options.hardware.alsa.enablePersistence = lib.mkOption { + type = lib.types.bool; + default = false; + description = '' + Whether to enable ALSA sound card state saving on shutdown. + This is generally not necessary if you're using an external sound server. + ''; }; - - ###### implementation - - config = mkIf config.sound.enable { - - environment.systemPackages = [ alsa-utils ]; - - environment.etc = mkIf (!pulseaudioEnabled && config.sound.extraConfig != "") - { "asound.conf".text = config.sound.extraConfig; }; - + config = lib.mkIf config.hardware.alsa.enablePersistence { # ALSA provides a udev rule for restoring volume settings. - services.udev.packages = [ alsa-utils ]; - - boot.kernelModules = optional config.sound.enableOSSEmulation "snd_pcm_oss"; - - systemd.services.alsa-store = - { description = "Store Sound Card State"; - wantedBy = [ "multi-user.target" ]; - unitConfig.RequiresMountsFor = "/var/lib/alsa"; - unitConfig.ConditionVirtualization = "!systemd-nspawn"; - serviceConfig = { - Type = "oneshot"; - RemainAfterExit = true; - ExecStartPre = "${pkgs.coreutils}/bin/mkdir -p /var/lib/alsa"; - ExecStart = "${alsa-utils}/sbin/alsactl restore --ignore"; - ExecStop = "${alsa-utils}/sbin/alsactl store --ignore"; - }; + services.udev.packages = [ pkgs.alsa-utils ]; + + systemd.services.alsa-store = { + description = "Store Sound Card State"; + wantedBy = [ "multi-user.target" ]; + unitConfig = { + RequiresMountsFor = "/var/lib/alsa"; + ConditionVirtualization = "!systemd-nspawn"; + }; + serviceConfig = { + Type = "oneshot"; + RemainAfterExit = true; + ExecStartPre = "${pkgs.coreutils}/bin/mkdir -p /var/lib/alsa"; + ExecStart = "${pkgs.alsa-utils}/sbin/alsactl restore --ignore"; + ExecStop = "${pkgs.alsa-utils}/sbin/alsactl store --ignore"; }; - - services.actkbd = mkIf config.sound.mediaKeys.enable { - enable = true; - bindings = [ - # "Mute" media key - { keys = [ 113 ]; events = [ "key" ]; command = "${alsa-utils}/bin/amixer -q set Master toggle"; } - - # "Lower Volume" media key - { keys = [ 114 ]; events = [ "key" "rep" ]; command = "${alsa-utils}/bin/amixer -q set Master ${config.sound.mediaKeys.volumeStep}- unmute"; } - - # "Raise Volume" media key - { keys = [ 115 ]; events = [ "key" "rep" ]; command = "${alsa-utils}/bin/amixer -q set Master ${config.sound.mediaKeys.volumeStep}+ unmute"; } - - # "Mic Mute" media key - { keys = [ 190 ]; events = [ "key" ]; command = "${alsa-utils}/bin/amixer -q set Capture toggle"; } - ]; }; - }; - } |