nix-files/hosts/common/programs/pipewire.nix

50 lines
1.8 KiB
Nix

# administer with pw-cli, pw-mon, pw-top commands
{ config, lib, ... }:
let
cfg = config.sane.programs.pipewire;
in
{
sane.programs.pipewire = {
persist.byStore.plaintext = [
# persist per-device volume levels
".local/state/wireplumber"
];
};
services.pipewire = lib.mkIf cfg.enabled {
enable = true;
package = cfg.package;
alsa.enable = true;
alsa.support32Bit = true; # ??
# emulate pulseaudio for legacy apps (e.g. sxmo-utils)
pulse.enable = true;
# TODO: try:
# socketActivation = false;
};
systemd.user.services."pipewire".wantedBy = lib.optionals cfg.enabled [ "graphical-session.target" ];
# rtkit/RealtimeKit: allow applications which want realtime audio (e.g. Dino? Pulseaudio server?) to request it.
# this might require more configuration (e.g. polkit-related) to work exactly as desired.
# - readme outlines requirements: <https://github.com/heftig/rtkit>
# XXX(2023/10/12): rtkit does not play well on moby. any application sending audio out dies after 10s.
# security.rtkit.enable = lib.mkIf cfg.enabled true;
# OLD ALSA STUFF:
# persist per-device volume settings across power cycles.
# pipewire sits atop the kernel ALSA API, so alsa-utils knows about device volumes.
# but wireplumber also tries to do some of this
# systemd.services.alsa-store = {
# # based on <repo:nixos/nixpkgs:nixos/modules/services/audio/alsa.nix>
# description = "Store Sound Card State";
# wantedBy = [ "multi-user.target" ];
# serviceConfig = {
# Type = "oneshot";
# RemainAfterExit = true;
# ExecStart = "${pkgs.alsa-utils}/sbin/alsactl restore";
# ExecStop = "${pkgs.alsa-utils}/sbin/alsactl store --ignore";
# };
# };
# sane.persist.sys.byStore.plaintext = [ "/var/lib/alsa" ];
}