feat(third_party/ffmpeg): Add "libnpp" support to ffmpeg r/614

Builds ffmpeg with CUDA Toolkit as a dependency, which includes a
library called "libnpp" that provides something related to hardware
accelerated video stream resizing.

v0v

2 files changed, 14 insertions, 0 deletions

diff --git a/third_party/default.nix b/third_party/default.nix
index 69b5de38c878..56a152985307 100644
--- a/third_party/default.nix
+++ b/third_party/default.nix
@@ -35,6 +35,7 @@ let
       clang_9
       cmake
       coreutils
+      cudatoolkit
       darwin
       dockerTools
       emacs26
@@ -119,6 +120,7 @@ in exposed // {
   # Packages to be overridden
   originals = {
     inherit (nixpkgs) git notmuch;
+    ffmpeg = nixpkgs.ffmpeg-full;
   };
 
   # Make NixOS available
diff --git a/third_party/ffmpeg/default.nix b/third_party/ffmpeg/default.nix
new file mode 100644
index 000000000000..e1b4d759da70
--- /dev/null
+++ b/third_party/ffmpeg/default.nix
@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+
+pkgs.originals.ffmpeg.overrideAttrs(old: {
+  buildInputs = old.buildInputs ++ [
+    pkgs.cudatoolkit.out
+  ];
+
+  configureFlags = old.configureFlags ++ [
+    "--enable-libnpp"
+    "--enable-nonfree"
+  ];
+})