diff options
author | Raymond Gauthier <jraygauthier@gmail.com> | 2018-06-09 01:59:21 -0400 |
---|---|---|
committer | Raymond Gauthier <jraygauthier@gmail.com> | 2018-06-11 11:33:49 -0400 |
commit | 3dfc9cd8268b10e990a7e9af536dbc7b12099789 (patch) | |
tree | 6ebf4dc8a2bf78d0ad654d2ccedc8b9abf03a124 /nixos/modules/hardware/video | |
parent | 5d960b51c66f7dff154a9ddda76296269bf922ee (diff) |
nixos/uvcvideo.dynctrl: Init
Diffstat (limited to 'nixos/modules/hardware/video')
-rw-r--r-- | nixos/modules/hardware/video/uvcvideo/default.nix | 64 | ||||
-rw-r--r-- | nixos/modules/hardware/video/uvcvideo/uvcdynctrl-udev-rules.nix | 46 |
2 files changed, 110 insertions, 0 deletions
diff --git a/nixos/modules/hardware/video/uvcvideo/default.nix b/nixos/modules/hardware/video/uvcvideo/default.nix new file mode 100644 index 000000000000..7e3e94fdf2bd --- /dev/null +++ b/nixos/modules/hardware/video/uvcvideo/default.nix @@ -0,0 +1,64 @@ + +{ config, lib, pkgs, ... }: + +with lib; + +let + + cfg = config.services.uvcvideo; + + uvcdynctrl-udev-rules = packages: pkgs.callPackage ./uvcdynctrl-udev-rules.nix { + drivers = packages; + udevDebug = false; + }; + +in + +{ + + options = { + services.uvcvideo.dynctrl = { + + enable = mkOption { + type = types.bool; + default = false; + description = '' + Whether to enable <command>uvcvideo</command> dynamic controls. + + Note that enabling this brings the <command>uvcdynctrl</command> tool + into your environement and register all dynamic controls from + specified <command>packages</command> to the <command>uvcvideo</command> driver. + ''; + }; + + packages = mkOption { + type = types.listOf types.path; + example = literalExample "[ pkgs.tiscamera ]"; + description = '' + List of packages containing <command>uvcvideo</command> dynamic controls + rules. All files found in + <filename><replaceable>pkg</replaceable>/share/uvcdynctrl/data</filename> + will be included. + + Note that these will serve as input to the <command>libwebcam</command> + package which through its own <command>udev</command> rule will register + the dynamic controls from specified packages to the <command>uvcvideo</command> + driver. + ''; + apply = map getBin; + }; + }; + }; + + config = mkIf cfg.dynctrl.enable { + + services.udev.packages = [ + (uvcdynctrl-udev-rules cfg.dynctrl.packages) + ]; + + environment.systemPackages = [ + pkgs.libwebcam + ]; + + }; +} diff --git a/nixos/modules/hardware/video/uvcvideo/uvcdynctrl-udev-rules.nix b/nixos/modules/hardware/video/uvcvideo/uvcdynctrl-udev-rules.nix new file mode 100644 index 000000000000..832e61966120 --- /dev/null +++ b/nixos/modules/hardware/video/uvcvideo/uvcdynctrl-udev-rules.nix @@ -0,0 +1,46 @@ +{ lib +, stdenv +, buildEnv +, libwebcam +, makeWrapper +, runCommand +, drivers ? [] +, udevDebug ? false +}: + +let + version = "0.0.0"; + + dataPath = buildEnv { + name = "uvcdynctrl-with-drivers-data-path"; + paths = drivers ++ [ libwebcam ]; + pathsToLink = [ "/share/uvcdynctrl/data" ]; + ignoreCollisions = false; + }; + + dataDir = "${dataPath}/share/uvcdynctrl/data"; + udevDebugVarValue = if udevDebug then "1" else "0"; +in + +runCommand "uvcdynctrl-udev-rules-${version}" +{ + inherit dataPath; + buildInputs = [ + makeWrapper + libwebcam + ]; + dontPatchELF = true; + dontStrip = true; +} +'' + mkdir -p "$out/lib/udev" + makeWrapper "${libwebcam}/lib/udev/uvcdynctrl" "$out/lib/udev/uvcdynctrl" \ + --set NIX_UVCDYNCTRL_DATA_DIR "${dataDir}" \ + --set NIX_UVCDYNCTRL_UDEV_DEBUG "${udevDebugVarValue}" + + mkdir -p "$out/lib/udev/rules.d" + cat "${libwebcam}/lib/udev/rules.d/80-uvcdynctrl.rules" | \ + sed -r "s#RUN\+\=\"([^\"]+)\"#RUN\+\=\"$out/lib/udev/uvcdynctrl\"#g" > \ + "$out/lib/udev/rules.d/80-uvcdynctrl.rules" +'' + |