mirror of
https://github.com/lhns/steam-frame-nix.git
synced 2026-10-06 04:04:16 +02:00
Pierre Kisters
1ad0dd751e
Every module imports cleanup.nix (also exported as homeManagerModules.cleanup), which - puts steam-frame-nix-cleanup (install.sh cleanup) on PATH; - runs `cleanup --orphans --quiet` after linkGeneration on every switch, keeping what the configuration still uses (steamFrame.cleanup.keep, set by the modules: debugger while steamvrDebugger is on, the Firefox desktop profile's user.js while its fix applies); in a dry run it runs with --dry-run; - runs `cleanup --all` instead when Home Manager's `uninstall = true;` is set (the manual uninstall route); - removes links of older versions at paths Home Manager is about to own before checkLinkTargets (steamFrame.cleanup.migrateLinks), which would count as collisions otherwise. install.sh cleanup gains --quiet (only actions, deferrals and warnings; the header only when something is printed). The Jellyfin module's own removal of the old shim copy goes: cleanup does it.
72 lines
3.1 KiB
Nix
72 lines
3.1 KiB
Nix
# Hardware video decoding for the Jellyfin Desktop Flatpak
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# (org.jellyfin.JellyfinDesktop; installing it is up to the user).
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# The Frame's decoder is a V4L2 M2M device (qcom-iris, /dev/video*): the
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# Flatpak's devices=dri doesn't expose it (nothing finer than devices=all
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# exists), and Jellyfin hard-sets mpv's hwdec=auto-copy, whose probe list
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# leaves out V4L2 M2M, without a way to pass mpv options. So:
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# - an LD_PRELOAD shim (jellyfin/mpv-hwdec-shim.c) rewrites an "auto*" hwdec
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# to $SFN_MPV_HWDEC. Preloaded from the store: the override exposes just
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# its store path (read-only) to the sandbox.
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# - override: devices=all, that filesystem, LD_PRELOAD, SFN_MPV_HWDEC.
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# Through nix-flatpak's services.flatpak.overrides if it is imported and
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# enabled (merged with the user's own overrides there); else home-manager
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# owns the app's override file.
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{ config, options, lib, pkgs, ... }:
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let
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cfg = config.steamFrame.jellyfin.hardwareDecoding;
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app = "org.jellyfin.JellyfinDesktop";
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shim = pkgs.callPackage ./jellyfin/shim.nix { };
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override = {
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Context = { devices = [ "all" ]; filesystems = [ "${shim}:ro" ]; };
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Environment = { LD_PRELOAD = "${shim}/lib/mpv-hwdec-shim.so"; SFN_MPV_HWDEC = cfg.hwdec; };
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};
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useNixFlatpak = options ? services.flatpak.overrides && config.services.flatpak.enable;
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# Flatpak's keyfile format (lists as "a;b;").
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overrideFile = pkgs.writeText "${app}-override" (lib.concatStringsSep "\n" (lib.mapAttrsToList
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(section: entries: "[${section}]\n" + lib.concatStrings (lib.mapAttrsToList (key: value:
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"${key}=${if lib.isList value then lib.concatMapStrings (v: "${v};") value else value}\n") entries))
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override));
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in {
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imports = [ ./cleanup.nix ];
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options.steamFrame.jellyfin.hardwareDecoding = {
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enable = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Hardware video decoding (the Frame's V4L2 decoder) in the Jellyfin
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Desktop Flatpak: device access for the sandbox (devices=all) and an
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LD_PRELOAD shim that makes mpv try hwdec's value below. Without
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nix-flatpak, home-manager owns the app's Flatpak override file. Takes
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effect at the next start of Jellyfin.
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'';
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};
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hwdec = lib.mkOption {
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type = lib.types.strMatching "[^[:space:]]+";
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default = "v4l2m2m-copy,auto-copy";
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example = "v4l2m2m-copy";
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description = ''
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mpv hwdec value used instead of Jellyfin's automatic one ("auto*");
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tried in order, software decoding if none handles the stream.
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Set as SFN_MPV_HWDEC in the Flatpak's environment.
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'';
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};
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};
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# The shim copy of earlier versions is removed by steam-frame-nix-cleanup.
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config = lib.mkMerge [
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(lib.mkIf (cfg.enable && !useNixFlatpak) {
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# force: `flatpak override --user` replaces the link with a file.
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xdg.dataFile."flatpak/overrides/${app}" = { source = overrideFile; force = true; };
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})
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# Only if nix-flatpak is imported: the option doesn't exist otherwise.
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(lib.optionalAttrs (options ? services.flatpak.overrides) {
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services.flatpak.overrides = lib.mkIf (cfg.enable && useNixFlatpak) { ${app} = override; };
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})
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];
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}
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