Merge pull request #41737 from jraygauthier/jrg/uvcvideo_dynctrl_rebased

nixos/uvcvideo.dynctrl: Init
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Matthew Justin Bauer 2018-06-15 22:26:30 -04:00 committed by GitHub
commit 53a75e3a2a
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3 changed files with 111 additions and 0 deletions

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{ 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
];
};
}

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{ 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"
''

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@ -50,6 +50,7 @@
./hardware/video/bumblebee.nix
./hardware/video/displaylink.nix
./hardware/video/nvidia.nix
./hardware/video/uvcvideo/default.nix
./hardware/video/webcam/facetimehd.nix
./i18n/input-method/default.nix
./i18n/input-method/fcitx.nix