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