build-aux: Add Flatpak manifest

Add a new com.obsproject.Studio.json file containing the
dependencies and permissions required by OBS Studio.

RFC: https://github.com/obsproject/rfcs/pull/21

CI/flatpak/com.obsproject.Studio.json

+{
+  "app-id": "com.obsproject.Studio",
+  "runtime": "org.kde.Platform",
+  "runtime-version": "5.15",
+  "sdk": "org.kde.Sdk",
+  "command": "obs",
+  "finish-args": [
+    "--socket=x11",
+    "--socket=pulseaudio",
+    "--device=all",
+    "--share=network",
+    "--share=ipc",
+    "--filesystem=xdg-run/obs-xdg-portal:create",
+    "--filesystem=host",
+    "--talk-name=org.kde.StatusNotifierWatcher",
+    "--talk-name=org.freedesktop.ScreenSaver",
+    "--talk-name=org.freedesktop.PowerManagement.Inhibit",
+    "--talk-name=org.freedesktop.Notifications",
+    "--talk-name=org.mate.SessionManager",
+    "--talk-name=org.gnome.SessionManager",
+    "--own-name=org.kde.StatusNotifierItem-2-2",
+    "--system-talk-name=org.freedesktop.Avahi"
+  ],
+  "cleanup": [
+    "/lib/pkgconfig",
+    "/share/man",
+    "*.la"
+  ],
+  "modules": [
+    {
+      "name": "x264",
+      "config-opts": [
+        "--disable-cli",
+        "--enable-shared"
+      ],
+      "cleanup": [
+        "/include"
+      ],
+      "sources": [
+        {
+          "type": "git",
+          "url": "https://code.videolan.org/videolan/x264.git",
+          "commit": "cde9a93319bea766a92e306d69059c76de970190"
+        }
+      ]
+    },
+    {
+      "name": "v4l-utils",
+      "config-opts": [
+        "--disable-static",
+        "--disable-doxygen-doc",
+        "--disable-libdvbv5",
+        "--disable-v4l-utils",
+        "--disable-qv4l2",
+        "--with-udevdir=/app/lib/udev/"
+      ],
+      "cleanup": [
+        "/include"
+      ],
+      "sources": [
+        {
+          "type": "archive",
+          "url": "https://linuxtv.org/downloads/v4l-utils/v4l-utils-1.20.0.tar.bz2",
+          "sha256": "956118713f7ccb405c55c7088a6a2490c32d54300dd9a30d8d5008c28d3726f7"
+        }
+      ]
+    },
+    {
+      "name": "nv-codec-headers",
+      "no-autogen": true,
+      "make-install-args": [
+        "PREFIX=/app"
+      ],
+      "cleanup": [
+        "*"
+      ],
+      "sources": [
+        {
+          "type": "git",
+          "url": "https://git.videolan.org/git/ffmpeg/nv-codec-headers.git",
+          "commit": "a99740a84b49fd609e04b03279e66c5a8b767440",
+          "tag": "n10.0.26.1"
+        }
+      ]
+    },
+    {
+      "name": "srt",
+      "buildsystem": "cmake-ninja",
+      "config-opts": [
+        "-DENABLE_STATIC=OFF",
+        "-DENABLE_APPS=OFF",
+        "-DENABLE_LOGGING=OFF"
+      ],
+      "cleanup": [
+        "/include",
+        "/bin"
+      ],
+      "sources": [
+        {
+          "type": "git",
+          "url": "https://github.com/Haivision/srt.git",
+          "tag": "v1.4.2",
+          "commit": "50b7af06f3a0a456c172b4cb3aceafa8a5cc0036"
+        }
+      ]
+    },
+    {
+      "name": "ffmpeg",
+      "config-opts": [
+        "--enable-gpl",
+        "--enable-shared",
+        "--disable-static",
+        "--enable-gnutls",
+        "--disable-doc",
+        "--disable-programs",
+        "--disable-devices",
+        "--enable-libopus",
+        "--enable-libvpx",
+        "--enable-libvorbis",
+        "--enable-libx264",
+        "--enable-nvenc",
+        "--enable-libsrt"
+      ],
+      "cleanup": [
+        "/share/ffmpeg",
+        "/include"
+      ],
+      "sources": [
+        {
+          "type": "archive",
+          "url": "https://www.ffmpeg.org/releases/ffmpeg-4.3.1.tar.xz",
+          "sha256": "ad009240d46e307b4e03a213a0f49c11b650e445b1f8be0dda2a9212b34d2ffb"
+        },
+        {
+          "type": "patch",
+          "path": "ffmpeg-libsrt.patch"
+        }
+      ]
+    },
+    {
+      "name": "luajit",
+      "no-autogen": true,
+      "cleanup": [
+        "/bin",
+        "/include"
+      ],
+      "sources": [
+        {
+          "type": "archive",
+          "url": "http://luajit.org/download/LuaJIT-2.1.0-beta3.tar.gz",
+          "sha256": "1ad2e34b111c802f9d0cdf019e986909123237a28c746b21295b63c9e785d9c3"
+        },
+        {
+          "type": "shell",
+          "commands": [
+            "sed -i 's|/usr/local|/app|' ./Makefile"
+          ]
+        }
+      ]
+    },
+    {
+      "name": "swig",
+      "config-opts": [
+        "--without-boost",
+        "--without-pcre",
+        "--without-alllang",
+        "--with-lua=/app/bin/luajit-2.1.0-beta2",
+        "--with-luaincl=/app/include/luajit-2.1",
+        "--with-python3"
+      ],
+      "cleanup": [
+        "*"
+      ],
+      "sources": [
+        {
+          "type": "archive",
+          "url": "https://prdownloads.sourceforge.net/swig/swig-4.0.2.tar.gz",
+          "sha256": "d53be9730d8d58a16bf0cbd1f8ac0c0c3e1090573168bfa151b01eb47fa906fc"
+        }
+      ]
+    },
+    {
+      "name": "mbedtls",
+      "buildsystem": "cmake-ninja",
+      "builddir": true,
+      "config-opts": [
+        "-DCMAKE_BUILD_TYPE=Release",
+        "-DCMAKE_POSITION_INDEPENDENT_CODE=ON",
+        "-DUSE_SHARED_MBEDTLS_LIBRARY=ON",
+        "-DUSE_STATIC_MBEDTLS_LIBRARY=OFF",
+        "-DENABLE_TESTING=OFF",
+        "-DENABLE_PROGRAMS=OFF"
+      ],
+      "cleanup": [
+        "/include"
+      ],
+      "sources": [
+        {
+          "type": "git",
+          "url": "https://github.com/ARMmbed/mbedtls.git",
+          "commit": "848a4e06b375e067552f1a21d4bc69322c673217",
+          "tag": "mbedtls-2.16.8"
+        }
+      ]
+    },
+    {
+      "name": "jack2",
+      "buildsystem": "simple",
+      "build-commands": [
+        "./waf configure --prefix=$FLATPAK_DEST",
+        "./waf build -j $FLATPAK_BUILDER_N_JOBS",
+        "./waf install"
+      ],
+      "cleanup": [
+        "*"
+      ],
+      "sources": [
+        {
+          "type": "archive",
+          "url": "https://github.com/jackaudio/jack2/releases/download/v1.9.14/v1.9.14.tar.gz",
+          "sha256": "a20a32366780c0061fd58fbb5f09e514ea9b7ce6e53b080a44b11a558a83217c"
+        }
+      ]
+    },
+    {
+      "name": "cef",
+      "buildsystem": "cmake-ninja",
+      "no-make-install": true,
+      "make-args": [
+        "libcef_dll_wrapper"
+      ],
+      "build-commands": [
+        "mkdir -p /app/cef/libcef_dll_wrapper",
+        "cp -R ./include /app/cef",
+        "cp -R ./Release /app/cef",
+        "cp -R ./Resources /app/cef",
+        "cp -R ./libcef_dll_wrapper/libcef_dll_wrapper.a /app/cef/libcef_dll_wrapper"
+      ],
+      "sources": [
+        {
+          "type": "archive",
+          "url": "https://cef-builds.spotifycdn.com/cef_binary_76.1.13+gf19c584+chromium-76.0.3809.132_linux64_minimal.tar.bz2",
+          "sha256": "6b0dfa8ddafcec822fcd20018cf081959ffa6d0565be3793da1f596ac0733c38"
+        }
+      ]
+    },
+    {
+      "name": "obs",
+      "buildsystem": "cmake-ninja",
+      "builddir": true,
+      "config-opts": [
+        "-DCMAKE_BUILD_TYPE=Release",
+        "-DBUILD_BROWSER=ON",
+        "-DCEF_ROOT_DIR=/app/cef",
+        "-DUNIX_STRUCTURE=ON",
+        "-DUSE_XDG=ON",
+        "-DDISABLE_ALSA=ON",
+        "-DENABLE_PULSEAUDIO=ON",
+        "-DWITH_RTMPS=ON"
+      ],
+      "sources": [
+        {
+          "type": "git",
+          "url": "https://github.com/obsproject/obs-studio.git"
+        }
+      ]
+    }
+  ]
+}

CI/flatpak/ffmpeg-libsrt.patch

+From 7c59e1b0f285cd7c7b35fcd71f49c5fd52cf9315 Mon Sep 17 00:00:00 2001
+From: Jun Zhao <barryjzhao@tencent.com>
+Date: Sun, 12 Jul 2020 13:48:48 +0800
+Subject: [PATCH 1/1] lavf/srt: fix build fail when used the libsrt 1.4.1
+
+libsrt changed the:
+SRTO_SMOOTHER   -> SRTO_CONGESTION
+SRTO_STRICTENC  -> SRTO_ENFORCEDENCRYPTION
+and removed the front of deprecated options (SRTO_SMOOTHER/SRTO_STRICTENC)
+in the header, it's lead to build fail
+
+fix #8760
+
+Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
+---
+ libavformat/libsrt.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/libavformat/libsrt.c b/libavformat/libsrt.c
+index 4de575b..4719ce0 100644
+--- a/libavformat/libsrt.c
++++ b/libavformat/libsrt.c
+@@ -313,8 +313,12 @@ static int libsrt_set_options_pre(URLContext *h, int fd)
+         (s->pbkeylen >= 0 && libsrt_setsockopt(h, fd, SRTO_PBKEYLEN, "SRTO_PBKEYLEN", &s->pbkeylen, sizeof(s->pbkeylen)) < 0) ||
+         (s->passphrase && libsrt_setsockopt(h, fd, SRTO_PASSPHRASE, "SRTO_PASSPHRASE", s->passphrase, strlen(s->passphrase)) < 0) ||
+ #if SRT_VERSION_VALUE >= 0x010302
++#if SRT_VERSION_VALUE >= 0x010401
++        (s->enforced_encryption >= 0 && libsrt_setsockopt(h, fd, SRTO_ENFORCEDENCRYPTION, "SRTO_ENFORCEDENCRYPTION", &s->enforced_encryption, sizeof(s->enforced_encryption)) < 0) ||
++#else
+         /* SRTO_STRICTENC == SRTO_ENFORCEDENCRYPTION (53), but for compatibility, we used SRTO_STRICTENC */
+         (s->enforced_encryption >= 0 && libsrt_setsockopt(h, fd, SRTO_STRICTENC, "SRTO_STRICTENC", &s->enforced_encryption, sizeof(s->enforced_encryption)) < 0) ||
++#endif
+         (s->kmrefreshrate >= 0 && libsrt_setsockopt(h, fd, SRTO_KMREFRESHRATE, "SRTO_KMREFRESHRATE", &s->kmrefreshrate, sizeof(s->kmrefreshrate)) < 0) ||
+         (s->kmpreannounce >= 0 && libsrt_setsockopt(h, fd, SRTO_KMPREANNOUNCE, "SRTO_KMPREANNOUNCE", &s->kmpreannounce, sizeof(s->kmpreannounce)) < 0) ||
+ #endif
+@@ -333,7 +337,11 @@ static int libsrt_set_options_pre(URLContext *h, int fd)
+         (s->lossmaxttl >= 0 && libsrt_setsockopt(h, fd, SRTO_LOSSMAXTTL, "SRTO_LOSSMAXTTL", &s->lossmaxttl, sizeof(s->lossmaxttl)) < 0) ||
+         (s->minversion >= 0 && libsrt_setsockopt(h, fd, SRTO_MINVERSION, "SRTO_MINVERSION", &s->minversion, sizeof(s->minversion)) < 0) ||
+         (s->streamid && libsrt_setsockopt(h, fd, SRTO_STREAMID, "SRTO_STREAMID", s->streamid, strlen(s->streamid)) < 0) ||
++#if SRT_VERSION_VALUE >= 0x010401
++        (s->smoother && libsrt_setsockopt(h, fd, SRTO_CONGESTION, "SRTO_CONGESTION", s->smoother, strlen(s->smoother)) < 0) ||
++#else
+         (s->smoother && libsrt_setsockopt(h, fd, SRTO_SMOOTHER, "SRTO_SMOOTHER", s->smoother, strlen(s->smoother)) < 0) ||
++#endif
+         (s->messageapi >= 0 && libsrt_setsockopt(h, fd, SRTO_MESSAGEAPI, "SRTO_MESSAGEAPI", &s->messageapi, sizeof(s->messageapi)) < 0) ||
+         (s->payload_size >= 0 && libsrt_setsockopt(h, fd, SRTO_PAYLOADSIZE, "SRTO_PAYLOADSIZE", &s->payload_size, sizeof(s->payload_size)) < 0) ||
+         ((h->flags & AVIO_FLAG_WRITE) && libsrt_setsockopt(h, fd, SRTO_SENDER, "SRTO_SENDER", &yes, sizeof(yes)) < 0)) {
+--
+2.7.4
+