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blackmagic decklink: init pkg and module at 12.2 #102512

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blackmagic decklink: init pkg and module at 12.2 #102512

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78bed8c
maintainers: add hexchen
hexchen Jun 17, 2021
6e92047
linuxPackages.decklink: init at 12.0a14
hexchen Nov 2, 2020
a9e1354
blackmagicDesktopVideo: init at 12.0a14
hexchen Nov 2, 2020
96b1cab
nixos/decklink: init
hexchen Nov 2, 2020
aa691f0
decklink: update to 12.2
hexchen Nov 28, 2021
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6 changes: 6 additions & 0 deletions maintainers/maintainer-list.nix
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Expand Up @@ -4661,6 +4661,12 @@
githubId = 222664;
name = "Matthew Leach";
};
hexchen = {
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email = "nix@lilwit.ch";
github = "hexchen";
githubId = 41522204;
name = "hexchen";
};
hh = {
email = "hh@m-labs.hk";
github = "HarryMakes";
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17 changes: 17 additions & 0 deletions nixos/modules/hardware/decklink.nix
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{ config, lib, pkgs, ... }:

with lib;

let
cfg = config.hardware.decklink;
kernelPackages = config.boot.kernelPackages;
in
{
options.hardware.decklink.enable = mkEnableOption "hardware support for the Blackmagic Design Decklink audio/video interfaces";

config = mkIf cfg.enable {
boot.kernelModules = [ "blackmagic" "blackmagic-io" "snd_blackmagic-io" ];
boot.extraModulePackages = [ kernelPackages.decklink ];
systemd.packages = [ pkgs.blackmagicDesktopVideo ];
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Suggested change
systemd.packages = [ pkgs.blackmagicDesktopVideo ];
systemd.packages = [ pkgs.blackmagicDesktopVideo ];
systemd.services.DecklinkVideoHelper.wantedBy = [ "multi-user.target" ];

See #81138 for details.

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@davidak davidak Dec 1, 2021 •
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It seem not to work yet.

[root@gaming:~]# lspci | grep Blackmagic
05:00.0 Multimedia video controller: Blackmagic Design Intensity Pro 4K
(this did work without the driver)
[root@gaming:~]# lsmod | grep blackmagic

[root@gaming:~]# systemctl status DecklinkVideoHelper
Unit DecklinkVideoHelper.service could not be found.

I do not see DesktopVideoHelper.service in /var/run/current-system/sw/lib/systemd/system:

[root@gaming:~]# ll /var/run/current-system/sw/lib/systemd/system | grep DesktopVideoHelper

I see the kernel modules in /var/run/current-system/kernel-modules/lib/modules/5.10.81/extra/:

[root@gaming:~]# ll /nix/store/x71rnsfknvga3hb7rhg3j889a0wc1cvn-nixos-system-gaming-22.05.git.aa691f07224/kernel-modules/lib/modules/5.10.81/extra/
total 1080
-r--r--r-- 1 root root 621372 Jan  1  1970 blackmagic-io.ko.xz
-r--r--r-- 1 root root 402860 Jan  1  1970 blackmagic.ko.xz
-r--r--r-- 1 root root  73992 Jan  1  1970 snd_blackmagic-io.ko.xz

};
}
1 change: 1 addition & 0 deletions nixos/modules/module-list.nix
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Expand Up @@ -47,6 +47,7 @@
./hardware/cpu/intel-microcode.nix
./hardware/corectrl.nix
./hardware/digitalbitbox.nix
./hardware/decklink.nix
./hardware/device-tree.nix
./hardware/gkraken.nix
./hardware/flirc.nix
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49 changes: 49 additions & 0 deletions pkgs/os-specific/linux/decklink/default.nix
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{ stdenv, lib, requireFile, fetchpatch, kernel }:

stdenv.mkDerivation rec {
pname = "decklink";
major = "12.2";
version = "${major}a12";

src = requireFile {
name = "Blackmagic_Desktop_Video_Linux_${major}.tar.gz";
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url = "https://www.blackmagicdesign.com/support/download/33abc1034cd54cf99101f9acd2edd93d/Linux";
sha256 = "62954a18b60d9040aa4a959dff30ac9c260218ef78d6a63cbb243788f7abc05f";
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@davidak davidak Dec 1, 2021 •
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Suggested change
sha256 = "62954a18b60d9040aa4a959dff30ac9c260218ef78d6a63cbb243788f7abc05f";
sha256 = "62954a18b60d9040aa4a959dff30ac9c260218ef78d6a63cbb243788f7abc05f";
message = ''
Please download the file manually from the developers website:
https://www.blackmagicdesign.com/support/download/33abc1034cd54cf99101f9acd2edd93d/Linux
They want you to register your product, but you can also download
the file without registration by clicking 'Download Only' in the
bottom left corner of the dialog.
Then add the downloaded file to the Nix store using:
nix-store --add-fixed sha256 Blackmagic_Desktop_Video_Linux_12.2.tar.gz
If you use Google Chrome or Chromium, you have to rename the
file to end with tar.gz first.
'';
# Chromium specific issue: https://bugs.chromium.org/p/chromium/issues/detail?id=1275694
# Remove hint when fixed.

Those instructions seem helpful.

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In https://github.com/NixOS/nixpkgs/pull/152113/files is a script to download files from blackmagicdesign.com. Maybe that would work here too.

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It indeed works. Thanks for the pointer, I was finally able to implement that 1.5 years later...

};

KERNELDIR = "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build";
INSTALL_MOD_PATH = placeholder "out";

nativeBuildInputs = kernel.moduleBuildDependencies;

setSourceRoot = ''
tar xf Blackmagic_Desktop_Video_Linux_${major}/other/x86_64/desktopvideo-${version}-x86_64.tar.gz
sourceRoot=$NIX_BUILD_TOP/desktopvideo-${version}-x86_64/usr/src
'';

buildPhase = ''
runHook preBuild

make -C $sourceRoot/blackmagic-${version} -j$NIX_BUILD_CORES
make -C $sourceRoot/blackmagic-io-${version} -j$NIX_BUILD_CORES

runHook postBuild
'';

installPhase = ''
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runHook preInstall

make -C $KERNELDIR M=$sourceRoot/blackmagic-${version} modules_install
make -C $KERNELDIR M=$sourceRoot/blackmagic-io-${version} modules_install

runHook postInstall
'';

meta = with lib; {
homepage = "https://www.blackmagicdesign.com/support/family/capture-and-playback";
maintainers = [ maintainers.hexchen ];
license = licenses.unfree;
description = "Kernel module for the Blackmagic Design Decklink cards";
platforms = platforms.linux;
};
}
55 changes: 55 additions & 0 deletions pkgs/tools/video/blackmagic-desktop-video/default.nix
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{ stdenv, requireFile, lib,
libcxx, libcxxabi
}:

stdenv.mkDerivation rec {
pname = "blackmagic-desktop-video";
major = "12.2";
version = "${major}a12";

buildInputs = [
libcxx libcxxabi
];

src = requireFile {
name = "Blackmagic_Desktop_Video_Linux_${major}.tar.gz";
url = "https://www.blackmagicdesign.com/support/download/33abc1034cd54cf99101f9acd2edd93d/Linux";
sha256 = "62954a18b60d9040aa4a959dff30ac9c260218ef78d6a63cbb243788f7abc05f";
};

setSourceRoot = ''
tar xf Blackmagic_Desktop_Video_Linux_${major}/other/x86_64/desktopvideo-${version}-x86_64.tar.gz
sourceRoot=$NIX_BUILD_TOP/desktopvideo-${version}-x86_64
'';

installPhase = ''
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runHook preInstall

mkdir -p $out/{bin,share/doc,lib/systemd/system}
cp -r $sourceRoot/usr/share/doc/desktopvideo $out/share/doc
cp $sourceRoot/usr/lib/*.so $out/lib
cp $sourceRoot/usr/lib/systemd/system/DesktopVideoHelper.service $out/lib/systemd/system
ln -s ${libcxx}/lib/* ${libcxxabi}/lib/* $out/lib
cp $sourceRoot/usr/lib/blackmagic/DesktopVideo/libgcc_s.so.1 $out/lib/
cp $sourceRoot/usr/lib/blackmagic/DesktopVideo/DesktopVideoHelper $out/bin/

substituteInPlace $out/lib/systemd/system/DesktopVideoHelper.service --replace "/usr/lib/blackmagic/DesktopVideo/DesktopVideoHelper" "$out/bin/DesktopVideoHelper"

runHook postInstall
'';
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postFixup = ''
patchelf --set-interpreter ${stdenv.cc.bintools.dynamicLinker} \
--set-rpath "$out/lib:${lib.makeLibraryPath [ libcxx libcxxabi ]}" \
$out/bin/DesktopVideoHelper
'';

meta = with lib; {
homepage = "https://www.blackmagicdesign.com/support/family/capture-and-playback";
maintainers = [ maintainers.hexchen ];
license = licenses.unfree;
description = "Supporting applications for Blackmagic Decklink. Doesn't include the desktop applications, only the helper required to make the driver work.";
platforms = platforms.linux;
};
}
2 changes: 2 additions & 0 deletions pkgs/top-level/all-packages.nix
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Expand Up @@ -1493,6 +1493,8 @@ with pkgs;

bklk = callPackage ../applications/misc/bklk { };

blackmagicDesktopVideo = callPackage ../tools/video/blackmagic-desktop-video { };

bkyml = callPackage ../tools/misc/bkyml { };

blockbench-electron = callPackage ../applications/graphics/blockbench-electron { };
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2 changes: 2 additions & 0 deletions pkgs/top-level/linux-kernels.nix
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Expand Up @@ -282,6 +282,8 @@ in {

ddcci-driver = callPackage ../os-specific/linux/ddcci { };

decklink = callPackage ../os-specific/linux/decklink { };

digimend = callPackage ../os-specific/linux/digimend { };

dpdk-kmods = callPackage ../os-specific/linux/dpdk-kmods { };
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