nixos/modules/hardware/video/uvcvideo/default.nix

   1 {
   2   config,
   3   lib,
   4   pkgs,
   5   ...
   6 }:
   7 let
   8
   9   cfg = config.services.uvcvideo;
  10
  11   uvcdynctrl-udev-rules =
  12     packages:
  13     pkgs.callPackage ./uvcdynctrl-udev-rules.nix {
  14       drivers = packages;
  15       udevDebug = false;
  16     };
  17
  18 in
  19
  20 {
  21
  22   options = {
  23     services.uvcvideo.dynctrl = {
  24
  25       enable = lib.mkOption {
  26         type = lib.types.bool;
  27         default = false;
  28         description = ''
  29           Whether to enable {command}`uvcvideo` dynamic controls.
  30
  31           Note that enabling this brings the {command}`uvcdynctrl` tool
  32           into your environment and register all dynamic controls from
  33           specified {command}`packages` to the {command}`uvcvideo` driver.
  34         '';
  35       };
  36
  37       packages = lib.mkOption {
  38         type = lib.types.listOf lib.types.path;
  39         example = lib.literalExpression "[ pkgs.tiscamera ]";
  40         description = ''
  41           List of packages containing {command}`uvcvideo` dynamic controls
  42           rules. All files found in
  43           {file}`«pkg»/share/uvcdynctrl/data`
  44           will be included.
  45
  46           Note that these will serve as input to the {command}`libwebcam`
  47           package which through its own {command}`udev` rule will register
  48           the dynamic controls from specified packages to the {command}`uvcvideo`
  49           driver.
  50         '';
  51         apply = map lib.getBin;
  52       };
  53     };
  54   };
  55
  56   config = lib.mkIf cfg.dynctrl.enable {
  57
  58     services.udev.packages = [
  59       (uvcdynctrl-udev-rules cfg.dynctrl.packages)
  60     ];
  61
  62     environment.systemPackages = [
  63       pkgs.libwebcam
  64     ];
  65
  66   };
  67 }