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# pipewire example session manager. |
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{ config, lib, pkgs, ... }: |
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|
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with lib; |
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|
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let |
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cfg = config.services.pipewire.pwms; |
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enable32BitAlsaPlugins = cfg.alsa.support32Bit |
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&& pkgs.stdenv.isx86_64 |
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&& pkgs.pkgsi686Linux.pipewire != null; |
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|
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# Helpers for generating the pipewire JSON config file |
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mkSPAValueString = v: |
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if builtins.isList v then "[${lib.concatMapStringsSep " " mkSPAValueString v}]" |
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else if lib.types.attrs.check v then |
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"{${lib.concatStringsSep " " (mkSPAKeyValue v)}}" |
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else lib.generators.mkValueStringDefault { } v; |
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|
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mkSPAKeyValue = attrs: map (def: def.content) ( |
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lib.sortProperties |
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( |
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lib.mapAttrsToList |
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(k: v: lib.mkOrder (v._priority or 1000) "${lib.escape [ "=" ] k} = ${mkSPAValueString (v._content or v)}") |
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attrs |
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) |
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); |
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|
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toSPAJSON = attrs: lib.concatStringsSep "\n" (mkSPAKeyValue attrs); |
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in { |
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|
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meta = { |
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maintainers = teams.freedesktop.members; |
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}; |
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|
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###### interface |
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options = { |
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services.pipewire.pwms = { |
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enable = mkEnableOption "Example pipewire session manager"; |
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|
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package = mkOption { |
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type = types.package; |
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default = pkgs.pipewire.mediaSession; |
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example = literalExample "pkgs.pipewire.mediaSession"; |
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description = '' |
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The pipewire-media-session derivation to use. |
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''; |
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}; |
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|
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config = mkOption { |
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type = types.attrs; |
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description = '' |
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Configuration for the media session core. |
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''; |
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default = { |
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# media-session config file |
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properties = { |
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# Properties to configure the session and some |
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# modules |
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#mem.mlock-all = false |
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#context.profile.modules = default,rtkit |
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}; |
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|
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spa-libs = { |
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# Mapping from factory name to library. |
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"api.bluez5.*" = "bluez5/libspa-bluez5"; |
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"api.alsa.*" = "alsa/libspa-alsa"; |
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"api.v4l2.*" = "v4l2/libspa-v4l2"; |
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"api.libcamera.*" = "libcamera/libspa-libcamera"; |
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}; |
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|
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modules = { |
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# These are the modules that are enabled when a file with |
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# the key name is found in the media-session.d config directory. |
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# the default bundle is always enabled. |
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|
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default = [ |
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"flatpak" # manages flatpak access |
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"portal" # manage portal permissions |
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"v4l2" # video for linux udev detection |
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#"libcamera" # libcamera udev detection |
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"suspend-node" # suspend inactive nodes |
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"policy-node" # configure and link nodes |
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#"metadata" # export metadata API |
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#"default-nodes" # restore default nodes |
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#"default-profile" # restore default profiles |
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#"default-routes" # restore default route |
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#"streams-follow-default" # move streams when default changes |
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#"alsa-seq" # alsa seq midi support |
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#"alsa-monitor" # alsa udev detection |
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#"bluez5" # bluetooth support |
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#"restore-stream" # restore stream settings |
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]; |
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"with-audio" = [ |
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"metadata" |
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"default-nodes" |
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"default-profile" |
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"default-routes" |
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"alsa-seq" |
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"alsa-monitor" |
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]; |
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"with-alsa" = [ |
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"with-audio" |
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]; |
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"with-jack" = [ |
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"with-audio" |
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]; |
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"with-pulseaudio" = [ |
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"with-audio" |
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"bluez5" |
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"restore-stream" |
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"streams-follow-default" |
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]; |
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}; |
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}; |
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}; |
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|
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alsaMonitorConfig = mkOption { |
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type = types.attrs; |
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description = '' |
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Configuration for the alsa monitor. |
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''; |
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default = { |
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# alsa-monitor config file |
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properties = { |
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#alsa.jack-device = true |
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}; |
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|
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rules = [ |
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# an array of matches/actions to evaluate |
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{ |
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# rules for matching a device or node. It is an array of |
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# properties that all need to match the regexp. If any of the |
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# matches work, the actions are executed for the object. |
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matches = [ |
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{ |
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# this matches all cards |
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device.name = "~alsa_card.*"; |
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} |
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]; |
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actions = { |
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# actions can update properties on the matched object. |
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update-props = { |
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api.alsa.use-acp = true; |
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#api.alsa.use-ucm = true |
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#api.alsa.soft-mixer = false |
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#api.alsa.ignore-dB = false |
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#device.profile-set = "profileset-name" |
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#device.profile = "default profile name" |
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api.acp.auto-profile = false; |
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api.acp.auto-port = false; |
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#device.nick = "My Device" |
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}; |
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}; |
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} |
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{ |
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matches = [ |
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{ |
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# matches all sinks |
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node.name = "~alsa_input.*"; |
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} |
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{ |
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# matches all sources |
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node.name = "~alsa_output.*"; |
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} |
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]; |
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actions = { |
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update-props = { |
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#node.nick = "My Node" |
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#node.nick = null |
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#priority.driver = 100 |
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#priority.session = 100 |
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#node.pause-on-idle = false |
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#resample.quality = 4 |
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#channelmix.normalize = false |
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#channelmix.mix-lfe = false |
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#audio.channels = 2 |
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#audio.format = "S16LE" |
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#audio.rate = 44100 |
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#audio.position = "FL,FR" |
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#api.alsa.period-size = 1024 |
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#api.alsa.headroom = 0 |
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#api.alsa.disable-mmap = false |
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#api.alsa.disable-batch = false |
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}; |
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}; |
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} |
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]; |
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}; |
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}; |
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|
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bluezMonitorConfig = mkOption { |
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type = types.attrs; |
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description = '' |
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Configuration for the bluez5 monitor. |
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''; |
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default = { |
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# bluez-monitor config file |
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properties = { |
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# msbc is not expected to work on all headset + adapter combinations. |
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#bluez5.msbc-support = true |
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#bluez5.sbc-xq-support = true |
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# Enabled headset roles (default: [ hsp_hs hfp_ag ]), this |
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# property only applies to native backend. Currently some headsets |
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# (Sony WH-1000XM3) are not working with both hsp_ag and hfp_ag |
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# enabled, disable either hsp_ag or hfp_ag to work around it. |
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# |
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# Supported headset roles: hsp_hs (HSP Headset), |
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# hsp_ag (HSP Audio Gateway), |
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# hfp_ag (HFP Audio Gateway) |
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#bluez5.headset-roles = [ hsp_hs hsp_ag hfp_ag ] |
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# Enabled A2DP codecs (default: all) |
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#bluez5.codecs = [ sbc aac ldac aptx aptx_hd ] |
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}; |
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rules = [ |
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# an array of matches/actions to evaluate |
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{ |
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# rules for matching a device or node. It is an array of |
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# properties that all need to match the regexp. If any of the |
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# matches work, the actions are executed for the object. |
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matches = [ |
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{ |
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# this matches all cards |
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device.name = "~bluez_card.*"; |
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} |
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]; |
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actions = { |
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# actions can update properties on the matched object. |
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update-props = { |
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#device.nick = "My Device" |
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}; |
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}; |
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} |
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{ |
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matches = [ |
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{ |
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# matches all sinks |
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node.name = "~bluez_input.*"; |
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} |
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{ |
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# matches all sources |
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node.name = "~bluez_output.*"; |
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} |
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]; |
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actions = { |
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update-props = { |
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#node.nick = "My Node" |
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#node.nick = null |
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#priority.driver = 100 |
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#priority.session = 100 |
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#node.pause-on-idle = false |
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#resample.quality = 4 |
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#channelmix.normalize = false |
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#channelmix.mix-lfe = false |
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}; |
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}; |
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} |
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]; |
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}; |
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}; |
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v4l2MonitorConfig = mkOption { |
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type = types.attrs; |
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description = '' |
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Configuration for the V4L2 monitor. |
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''; |
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default = { |
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# v4l2-monitor config file |
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properties = { |
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}; |
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rules = [ |
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# an array of matches/actions to evaluate |
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{ |
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# rules for matching a device or node. It is an array of |
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# properties that all need to match the regexp. If any of the |
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# matches work, the actions are executed for the object. |
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matches = [ |
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{ |
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# this matches all devices |
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device.name = "~v4l2_device.*"; |
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} |
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]; |
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actions = { |
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# actions can update properties on the matched object. |
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update-props = { |
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#device.nick = "My Device" |
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}; |
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}; |
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} |
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{ |
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matches = [ |
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{ |
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# matches all sinks |
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node.name = "~v4l2_input.*"; |
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} |
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{ |
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# matches all sources |
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node.name = "~v4l2_output.*"; |
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} |
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]; |
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actions = { |
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update-props = { |
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#node.nick = "My Node" |
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#node.nick = null |
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#priority.driver = 100 |
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#priority.session = 100 |
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#node.pause-on-idle = true |
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}; |
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}; |
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} |
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]; |
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}; |
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}; |
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}; |
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}; |
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###### implementation |
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config = mkIf cfg.enable { |
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environment.systemPackages = [ cfg.package ]; |
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services.pipewire.sessionManagerExecutable = "${cfg.package}/bin/pipewire-media-session"; |
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environment.etc."pipewire/media-session.d/media-session.conf" = { text = toSPAJSON cfg.config; }; |
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environment.etc."pipewire/media-session.d/v4l2-monitor.conf" = { text = toSPAJSON cfg.v4l2MonitorConfig; }; |
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environment.etc."pipewire/media-session.d/with-alsa" = mkIf config.services.pipewire.alsa.enable { text = ""; }; |
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environment.etc."pipewire/media-session.d/alsa-monitor.conf" = mkIf config.services.pipewire.alsa.enable { text = toSPAJSON cfg.alsaMonitorConfig; }; |
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environment.etc."pipewire/media-session.d/with-pulseaudio" = mkIf config.services.pipewire.pulse.enable { text = ""; }; |
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environment.etc."pipewire/media-session.d/bluez-monitor.conf" = mkIf config.services.pipewire.pulse.enable { text = toSPAJSON cfg.bluezMonitorConfig; }; |
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environment.etc."pipewire/media-session.d/with-jack" = mkIf config.services.pipewire.jack.enable { text = ""; }; |
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}; |
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} |
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