add libebur128 package

pkgs/development/libraries/libebur128/default.nix

@@ -0,0 +1,21 @@
+{ stdenv, fetchFromGitHub, cmake, speexdsp, pkgconfig }:
+
+stdenv.mkDerivation rec {
+  version = "1.0.2";
+  name = "libebur128-${version}";
+
+  src = fetchFromGitHub {
+    owner = "jiixyj";
+    repo = "libebur128";
+    rev = "v${version}";
+    sha256 = "19vy3ldbf931hjvn9jf9dvw1di3yx9ljxyk2yp5cnac1wqiza3jm";
+  };
+
+  buildInputs = [ cmake speexdsp pkgconfig ];
+
+  meta = with stdenv.lib; {
+    description = "Implementation of the EBU R128 loudness standard";
+    homepage = https://github.com/jiixyj/libebur128;
+    license = licenses.mit;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -6727,6 +6727,8 @@ let
 
   libebml = callPackage ../development/libraries/libebml { };
 
+  libebur128 = callPackage ../development/libraries/libebur128 { };
+
   libedit = callPackage ../development/libraries/libedit { };
 
   libelf = callPackage ../development/libraries/libelf { };