3p/nixpkgs: add OBS Studio bits to make things work

third_party/nixpkgs/pkgs/applications/video/obs-studio/Provide-runtime-plugin-destination-as-relative-path.patch

@@ -1,26 +1,41 @@
+From e8c4b54f753e57382ec756f07c114202bd9a19b8 Mon Sep 17 00:00:00 2001
+From: Luke Granger-Brown <git@lukegb.com>
+Date: Thu, 6 Jul 2023 15:30:49 +0100
+Subject: [PATCH] Provide runtime plugin destination as relative path
+
+---
+ libobs/CMakeLists.txt | 2 ++
+ libobs/obsconfig.h.in | 2 +-
+ 2 files changed, 3 insertions(+), 1 deletion(-)
+
 diff --git a/libobs/CMakeLists.txt b/libobs/CMakeLists.txt
-index 790583cd5..763cf3548 100644
+index 1c092e1b8..3916a6216 100644
 --- a/libobs/CMakeLists.txt
 +++ b/libobs/CMakeLists.txt
-@@ -455,6 +455,8 @@ elseif(OS_POSIX)
-     libobs PROPERTIES BUILD_RPATH "$<TARGET_FILE_DIR:OBS::libobs-opengl>")
+@@ -253,6 +253,8 @@ elseif(OS_FREEBSD)
+   include(cmake/os-freebsd.cmake)
  endif()
  
-+string(REGEX REPLACE "^${OBS_INSTALL_PREFIX}" "" OBS_PLUGIN_DESTINATION_RELATIVE ${OBS_PLUGIN_DESTINATION})
++set(OBS_PLUGIN_DESTINATION_RELATIVE "lib/obs-plugins")
 +
- configure_file(${CMAKE_CURRENT_SOURCE_DIR}/obsconfig.h.in
-                ${CMAKE_BINARY_DIR}/config/obsconfig.h)
- 
+ configure_file(obsconfig.h.in "${CMAKE_BINARY_DIR}/config/obsconfig.h" @ONLY)
+ target_include_directories(libobs PUBLIC "$<BUILD_INTERFACE:${CMAKE_BINARY_DIR}/config>"
+                                          "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
 diff --git a/libobs/obsconfig.h.in b/libobs/obsconfig.h.in
-index 4a664285a..5cff2ca53 100644
+index b4de06623..c6dd9aba8 100644
 --- a/libobs/obsconfig.h.in
 +++ b/libobs/obsconfig.h.in
-@@ -13,7 +13,7 @@
- #define OBS_VERSION_CANONICAL "@OBS_VERSION_CANONICAL@"
- #define OBS_DATA_PATH "@OBS_DATA_PATH@"
- #define OBS_INSTALL_PREFIX "@OBS_INSTALL_PREFIX@"
--#define OBS_PLUGIN_DESTINATION "@OBS_PLUGIN_DESTINATION@"
-+#define OBS_PLUGIN_DESTINATION "@OBS_PLUGIN_DESTINATION_RELATIVE@"
- #define OBS_QT_VERSION @_QT_VERSION@
+@@ -2,7 +2,9 @@
  
- #cmakedefine LINUX_PORTABLE
+ #cmakedefine OBS_DATA_PATH "@OBS_DATA_PATH@"
+ #cmakedefine OBS_PLUGIN_PATH "@OBS_PLUGIN_PATH@"
+-#cmakedefine OBS_PLUGIN_DESTINATION "@OBS_PLUGIN_DESTINATION@"
++#define OBS_PLUGIN_DESTINATION "lib/obs-plugins"
++#cmakedefine OBS_PLUGIN_DESTINATION_ORIG "@OBS_PLUGIN_DESTINATION@"
++#cmakedefine OBS_INSTALL_PREFIX "@OBS_INSTALL_PREFIX@"
+ 
+ #cmakedefine GIO_FOUND
+ #cmakedefine PULSEAUDIO_FOUND
+-- 
+2.40.1
+

third_party/nixpkgs/pkgs/applications/video/obs-studio/default.nix

@@ -25,7 +25,7 @@
 , wrapGAppsHook
 , scriptingSupport ? true
 , luajit
-, swig
+, swig4
 , python3
 , alsaSupport ? stdenv.isLinux
 , alsa-lib
@@ -42,6 +42,10 @@
 , srt
 , qtwayland
 , wrapQtAppsHook
+, nlohmann_json
+, websocketpp
+, asio
+, libdatachannel
 }:
 
 let
@@ -50,19 +54,17 @@ let
 in
 stdenv.mkDerivation rec {
   pname = "obs-studio";
-  version = "29.0.2";
+  version = "unstable-2023-07-06";
 
   src = fetchFromGitHub {
     owner = "obsproject";
     repo = "obs-studio";
-    rev = version;
-    sha256 = "sha256-TIUSjyPEsKRNTSLQXuLJGEgD989hJ5GhOsqJ4nkKVsY=";
+    rev = "e4a3f80f9fc90b0c9a65c96d343322ba3f1e6bcd";
+    sha256 = "sha256:0gs44bqvz776jw7kl8r59y6n392rhmgznhzwv5ap9y8gc3nggvga";
     fetchSubmodules = true;
   };
 
   patches = [
-    # Lets obs-browser build against CEF 90.1.0+
-    ./Enable-file-access-and-universal-access-for-file-URL.patch
     ./Provide-runtime-plugin-destination-as-relative-path.patch
   ];
 
@@ -73,7 +75,7 @@ stdenv.mkDerivation rec {
     wrapGAppsHook
     wrapQtAppsHook
   ]
-  ++ optional scriptingSupport swig;
+  ++ optional scriptingSupport swig4;
 
   buildInputs = [
     curl
@@ -99,6 +101,10 @@ stdenv.mkDerivation rec {
     libva
     srt
     qtwayland
+    nlohmann_json
+    websocketpp
+    asio
+    libdatachannel
   ]
   ++ optionals scriptingSupport [ luajit python3 ]
   ++ optional alsaSupport alsa-lib
@@ -121,14 +127,16 @@ stdenv.mkDerivation rec {
   # DL_OPENGL is an explicit path. Not sure if there's a better way
   # to handle this.
   cmakeFlags = [
-    "-DCMAKE_CXX_FLAGS=-DDL_OPENGL=\\\"$(out)/lib/libobs-opengl.so\\\""
-    "-DOBS_VERSION_OVERRIDE=${version}"
+    "-DOBS_VERSION_OVERRIDE=30.0.0"
     "-Wno-dev" # kill dev warnings that are useless for packaging
     # Add support for browser source
     "-DBUILD_BROWSER=ON"
     "-DCEF_ROOT_DIR=../../cef"
     "-DENABLE_JACK=ON"
   ];
+  preConfigure = ''
+    cmakeFlagsArray+=("-DCMAKE_CXX_FLAGS=-UDL_OPENGL -DDL_OPENGL=\\\"$out/lib/libobs-opengl.so\\\"")
+  '';
 
   dontWrapGApps = true;
   preFixup = ''

third_party/nixpkgs/pkgs/development/libraries/libdatachannel/default.nix

@@ -0,0 +1,43 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, cmake
+, openssl
+, srtp
+, usrsctp
+, plog
+, nlohmann_json
+, libnice
+}:
+
+stdenv.mkDerivation rec {
+  pname = "libdatachannel";
+  version = "0.19.0-alpha.4";
+
+  src = fetchFromGitHub {
+    owner = "paullouisageneau";
+    repo = "libdatachannel";
+    rev = "v${version}";
+    sha256 = "sha256-PRH0XfO+nr6KQfWmeV5S7VsWF6HxFB44DSrO1I9CI6g=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [
+    openssl srtp usrsctp plog nlohmann_json libnice
+  ];
+
+  cmakeFlags = [
+    "-DPREFER_SYSTEM_LIB=ON"
+    "-DUSE_NICE=ON"
+    "-DNO_EXAMPLES=ON"
+    "-DNO_TESTS=ON"  # wants ICE/STUN server on the internet
+  ];
+
+  meta = with lib; {
+    description = "C/C++ WebRTC network library";
+    maintainers = with maintainers; [ lukegb ];
+    platforms   = platforms.all;
+    license     = with licenses; [ mpl20 ];
+  };
+
+}

third_party/nixpkgs/pkgs/development/libraries/plog/default.nix

@@ -0,0 +1,31 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, cmake
+, openssl
+, srtp
+, usrsctp
+, plog  # todo
+, nlohmann_json
+}:
+
+stdenv.mkDerivation rec {
+  pname = "plog";
+  version = "1.1.9";
+
+  src = fetchFromGitHub {
+    owner = "SergiusTheBest";
+    repo = "plog";
+    rev = version;
+    sha256 = "sha256-CARTr1EEqXNJtp6XwHhr7aiRBiYR0cClzexpNCMaQJc=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  meta = with lib; {
+    description = "Portable, simple and extensible C++ logging library";
+    maintainers = with maintainers; [ lukegb ];
+    platforms   = platforms.all;
+    license     = with licenses; [ mit ];
+  };
+}

third_party/nixpkgs/pkgs/top-level/all-packages.nix

@@ -33136,6 +33136,9 @@ with pkgs;
     inherit (darwin.apple_sdk.frameworks) Foundation;
   };
 
+  plog = callPackage ../development/libraries/plog { };
+  libdatachannel = callPackage ../development/libraries/libdatachannel { };
+
   obs-studio = qt6Packages.callPackage ../applications/video/obs-studio {
     ffmpeg_4 = ffmpeg-full;
   };