125 lines
3.6 KiB
Nix
125 lines
3.6 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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with lib; let
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cfg = config.services.ezpw;
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in {
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options.services.ezpw = {
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enable = mkEnableOption "Enable pipewire";
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lowLatency = mkOption {
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type = types.bool;
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description = "Enable low latency configuration";
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default = true;
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};
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usbSoundcard = mkOption {
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type = types.bool;
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description = "Doubles the audio rate for alsa outputs in low latency mode";
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default = false;
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};
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periodSize = mkOption {
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type = types.int;
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description = ''
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Pipewire period size in low latency mode ("tweak by trial-and-error")'';
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default = 32;
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};
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rate = mkOption {
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type = types.int;
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description = "Pipewire rate in low latency mode";
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default = 48000;
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};
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quantum = mkOption {
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type = types.int;
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description = "Pipewire quantum in low latency mode";
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default = 32;
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};
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};
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config = let
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qr = "${toString cfg.quantum}/${toString cfg.rate}";
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in
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mkIf cfg.enable {
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hardware.pulseaudio.enable = lib.mkDefault false;
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services.pipewire = {
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enable = lib.mkDefault true;
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jack.enable = lib.mkDefault true;
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alsa.enable = lib.mkDefault true;
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alsa.support32Bit = lib.mkDefault true;
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pulse.enable = lib.mkDefault true;
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wireplumber.enable = lib.mkDefault true;
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};
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environment.systemPackages = with pkgs; [
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# pactl is required for pipewire-pulse
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pulseaudio
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];
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services.pipewire.extraConfig.pipewire."92-low-latency" = mkIf cfg.lowLatency {
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context.properties = {
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default.clock.rate = cfg.rate;
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default.clock.quantum = cfg.quantum;
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default.clock.min-quantum = cfg.quantum;
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default.clock.max-quantum = cfg.quantum;
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};
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};
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services.pipewire.extraConfig.pipewire-pulse."92-low-latency" = mkIf cfg.lowLatency {
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context.modules = [
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{
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name = "libpipewire-module-protocol-pulse";
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args = {
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pulse.min.req = qr;
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pulse.default.req = qr;
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pulse.max.req = qr;
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pulse.min.quantum = qr;
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pulse.max.quantum = qr;
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};
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}
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];
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stream.properties = {
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node.latency = qr;
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resample.quality = 1;
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};
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};
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services.pipewire.wireplumber.configPackages =
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[
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(pkgs.writeTextDir "share/wireplumber/bluetooth.lua.d/51-bluez-config.lua" ''
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bluez_monitor.properties = {
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["bluez5.enable-sbc-xq"] = true,
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["bluez5.enable-msbc"] = true,
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["bluez5.enable-hw-volume"] = true,
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["bluez5.headset-roles"] = "[ hsp_hs hsp_ag hfp_hf hfp_ag ]"
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}
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'')
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]
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++ optional cfg.lowLatency (pkgs.writeTextDir "share/wireplumber/main.lua.d/99-alsa-lowlatency.lua" ''
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alsa_monitor.rules = {
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{
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matches = {{{ "node.name", "matches", "alsa_output.*" }}};
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apply_properties = {
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["audio.format"] = "S32LE",
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["audio.rate"] = "${toString (cfg.rate
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* (
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if cfg.usbSoundcard
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then 2
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else 1
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))}", -- for USB soundcards it should be twice your desired rate
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["api.alsa.period-size"] = ${toString cfg.periodSize}, -- defaults to 1024, tweak by trial-and-error
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-- ["api.alsa.disable-batch"] = true, -- generally, USB soundcards use the batch mode
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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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