nixos-configs/devices/binto/modules/gpu-replay.nix

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{
pkgs,
config,
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lib,
gpu-screen-recorder-src,
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...
}: let
inherit (config.vars) mainUser mainMonitor;
inherit (lib) concatStringsSep removePrefix;
hyprPkgs = config.home-manager.users.${mainUser}.wayland.windowManager.hyprland.finalPackage;
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gsr = pkgs.stdenv.mkDerivation {
name = "gpu-screen-recorder";
version = gpu-screen-recorder-src.shortRev;
src = gpu-screen-recorder-src;
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nativeBuildInputs = with pkgs; [
pkg-config
makeWrapper
];
buildInputs = with pkgs; [
libpulseaudio
ffmpeg
wayland
libdrm
libva
xorg.libXcomposite
xorg.libXrandr
];
buildPhase = ''
./build.sh
'';
installPhase = ''
strip gsr-kms-server
strip gpu-screen-recorder
install -Dm755 "gsr-kms-server" "$out/bin/gsr-kms-server"
install -Dm755 "gpu-screen-recorder" "$out/bin/gpu-screen-recorder"
#install -Dm644 "extra/gpu-screen-recorder.service" "$out/lib/systemd/user/gpu-screen-recorder.service"
wrapProgram $out/bin/gpu-screen-recorder --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath [
pkgs.addOpenGLRunpath.driverLink
pkgs.libglvnd
]}"
'';
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};
in {
security.wrappers = {
gpu-screen-recorder = {
owner = "root";
group = "video";
capabilities = "cap_sys_nice+ep";
source = "${gsr}/bin/gpu-screen-recorder";
};
gsr-kms-server = {
owner = "root";
group = "video";
capabilities = "cap_sys_admin+ep";
source = "${gsr}/bin/gsr-kms-server";
};
};
home-manager.users.${mainUser} = {
home.packages = with pkgs; [
gsr
(writeShellApplication {
name = "gpu-save-replay";
runtimeInputs = [procps];
text = ''
pkill --signal SIGUSR1 -f gpu-screen-recorder
'';
})
(writeShellApplication {
name = "gsr-start";
runtimeInputs = [pulseaudio hyprPkgs xorg.xrandr];
text = ''
main="${removePrefix "desc:" mainMonitor}"
WINDOW=$(hyprctl -j monitors | jq '.[] |= (.description |= gsub(","; ""))' | jq -r ".[] | select(.description | test(\"$main\")) | .name")
# Fix fullscreen game resolution
xrandr --output "$WINDOW" --primary
gpu-screen-recorder ${concatStringsSep " " [
''-v no''
''-r 1200''
''-mf yes''
''-o /home/matt/Videos/Replay''
# Audio settings
''-ac aac''
''-a "$(pactl get-default-sink).monitor"''
''-a "$(pactl get-default-source)"''
# Video settings
''-w "$WINDOW"''
''-f 60''
''-c mkv''
''-k hevc''
''-q very_high''
]}
'';
})
];
wayland.windowManager.hyprland.settings = {
bind = [",F8, exec, ags -r 'GSR.saveReplay()'"];
};
};
}