nixpkgs/nixos/modules/services/desktops/pipewire/pipewire-media-session.nix
2021-03-19 05:14:44 +02:00

121 lines
4.7 KiB
Nix

# 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;
# Use upstream config files passed through spa-json-dump as the base
# Patched here as necessary for them to work with this module
defaults = {
alsa-monitor = (builtins.fromJSON (builtins.readFile ./alsa-monitor.conf.json));
bluez-monitor = (builtins.fromJSON (builtins.readFile ./bluez-monitor.conf.json));
media-session = (builtins.fromJSON (builtins.readFile ./media-session.conf.json));
v4l2-monitor = (builtins.fromJSON (builtins.readFile ./v4l2-monitor.conf.json));
};
# 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 if builtins.isString v then "\"${lib.generators.mkValueStringDefault { } v}\""
else lib.generators.mkValueStringDefault { } v;
mkSPAKeyValue = attrs: map (def: def.content) (
lib.sortProperties
(
lib.mapAttrsToList
(k: v: lib.mkOrder (v._priority or 1000) "${lib.escape [ "=" ":" ] k} = ${mkSPAValueString (v._content or v)}")
attrs
)
);
toSPAJSON = attrs: lib.concatStringsSep "\n" (mkSPAKeyValue attrs);
in {
meta = {
maintainers = teams.freedesktop.members;
};
###### interface
options = {
services.pipewire.media-session = {
enable = mkOption {
type = types.bool;
default = config.services.pipewire.enable;
defaultText = "config.services.pipewire.enable";
description = "Example pipewire session manager";
};
package = mkOption {
type = types.package;
default = pkgs.pipewire.mediaSession;
example = literalExample "pkgs.pipewire.mediaSession";
description = ''
The pipewire-media-session derivation to use.
'';
};
config = {
media-session = mkOption {
type = types.attrs;
description = ''
Configuration for the media session core. For details see
https://gitlab.freedesktop.org/pipewire/pipewire/-/blob/${cfg.package.version}/src/daemon/media-session.d/media-session.conf
'';
default = {};
};
alsa-monitor = mkOption {
type = types.attrs;
description = ''
Configuration for the alsa monitor. For details see
https://gitlab.freedesktop.org/pipewire/pipewire/-/blob/${cfg.package.version}/src/daemon/media-session.d/alsa-monitor.conf
'';
default = {};
};
bluez-monitor = mkOption {
type = types.attrs;
description = ''
Configuration for the bluez5 monitor. For details see
https://gitlab.freedesktop.org/pipewire/pipewire/-/blob/${cfg.package.version}/src/daemon/media-session.d/bluez-monitor.conf
'';
default = {};
};
v4l2-monitor = mkOption {
type = types.attrs;
description = ''
Configuration for the V4L2 monitor. For details see
https://gitlab.freedesktop.org/pipewire/pipewire/-/blob/${cfg.package.version}/src/daemon/media-session.d/v4l2-monitor.conf
'';
default = {};
};
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ cfg.package ];
systemd.packages = [ cfg.package ];
systemd.user.services.pipewire-media-session.wantedBy = [ "pipewire.service" ];
environment.etc."pipewire/media-session.d/media-session.conf" = { text = toSPAJSON (recursiveUpdate defaults.media-session cfg.config.media-session); };
environment.etc."pipewire/media-session.d/v4l2-monitor.conf" = { text = toSPAJSON (recursiveUpdate defaults.v4l2-monitor cfg.config.v4l2-monitor); };
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 (recursiveUpdate defaults.alsa-monitor cfg.config.alsa-monitor); };
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 (recursiveUpdate defaults.bluez-monitor cfg.config.bluez-monitor); };
environment.etc."pipewire/media-session.d/with-jack" = mkIf config.services.pipewire.jack.enable { text = ""; };
};
}