Version 2.8.8.

- Added an image editor.
Crop photos or highlight parts of screenshots before sending.

.gitattributes

@@ -4,3 +4,6 @@
 # Ensure diffs have LF endings
 *.diff text eol=lf
 *.bat text eol=crlf
+
+# Ensure lottie animations are treated as binary files
+*.lottie binary

.github/no-response.yml

@@ -0,0 +1,11 @@
+# Number of days of inactivity before an Issue is closed for lack of response
+daysUntilClose: 30
+# Label requiring a response
+responseRequiredLabel: waiting for answer
+# Comment to post when closing an Issue for lack of response. Set to `false` to disable
+closeComment: >
+  This issue has been automatically closed because there has been no response
+  to our request for more information from the original author. With only the
+  information that is currently in the issue, we don't have enough information
+  to take action. Please reach out if you have or find the answers we need so
+  that we can investigate further.

.github/stale.yml

@@ -0,0 +1,21 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 180
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 30
+# Issues with these labels will never be considered stale
+exemptLabels: [ "enhancement" ]
+# Label to use when marking an issue as stale
+staleLabel: stale
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: |
+  Hey there!
+
+  This issue was inactive for a long time and will be automatically closed in 30 days if there isn't any further activity. We therefore assume that the user has lost interest or resolved the problem on their own.
+
+  Don't worry though; if this is an error, let us know with a comment and we'll be happy to reopen the issue.
+
+  Thanks!
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false
+# Process only issues
+only: issues

.github/workflows/copyright_year_updater.yml

@@ -0,0 +1,16 @@
+name: Copyright year updater.
+
+on:
+  repository_dispatch:
+    types: ["Restart copyright_year_updater workflow."]
+  schedule:
+    # At 03:00 on January 1.
+    - cron: "0 3 1 1 *"
+
+jobs:
+  Copyright-year:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: desktop-app/action_code_updater@master
+        with:
+          type: "license-year"

.github/workflows/docker.yml

@@ -0,0 +1,25 @@
+name: Docker.
+
+on:
+  push:
+    paths:
+      - '.github/workflows/docker.yml'
+      - 'Telegram/build/docker/centos_env/**'
+  pull_request:
+    paths:
+      - '.github/workflows/docker.yml'
+      - 'Telegram/build/docker/centos_env/**'
+
+jobs:
+  docker:
+    name: Ubuntu
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone.
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
+      - name: Docker image build.
+        run: docker build -t telegram_desktop Telegram/build/docker/centos_env

.github/workflows/issue_closer.yml

@@ -8,132 +8,7 @@ jobs:
   comment:
     runs-on: ubuntu-latest
     steps:
-      - name: Get the latest version.
-        run: |
-          tag=$(git ls-remote --tags git://github.com/$GITHUB_REPOSITORY | cut -f 2 | tail -n1)
-          echo $tag
-          echo ::set-env name=LATEST_TAG::$tag
-
-      - name: Get the latest macOS version.
-        shell: python
-        run: |
-          import subprocess;
-          from xml.dom import minidom;
-
-          url = "https://osx.telegram.org/updates/versions.xml";
-          subprocess.check_call("wget %s" % url, shell=True);
-
-          xmldoc = minidom.parse('versions.xml');
-          itemlist = xmldoc.getElementsByTagName('enclosure');
-          ver = itemlist[0].attributes['sparkle:shortVersionString'].value;
-          print(ver);
-
-          subprocess.check_call("echo ::set-env name=%s::%s" % ("LATEST_MACOS", ver), shell=True);
-
-      - name: Check a version from an issue.
-        uses: actions/github-script@0.4.0
+      - name: Process an issue.
+        uses: desktop-app/action_issue_closer@master
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            let errorStr = "Version not found.";
-
-            function maxIndexOf(str, i) {
-              let index = str.indexOf(i);
-              return (index == -1) ? Number.MAX_SAFE_INTEGER : index;
-            }
-
-            let item1 = "Version of Telegram Desktop";
-            let item2 = "Installation source";
-            let item3 = "Used theme";
-            let item4 = "<details>";
-            let body = context.payload.issue.body;
-
-            console.log("Body of issue:\n" + body);
-            let index1 = body.indexOf(item1);
-            let index2 = Math.min(
-              Math.min(
-                maxIndexOf(body, item2),
-                maxIndexOf(body, item3)),
-              maxIndexOf(body, item4));
-
-            console.log("Index 1: " + index1);
-            console.log("Index 2: " + index2);
-
-            if (index1 == -1) {
-              console.log(errorStr);
-              return;
-            }
-
-            function parseVersion(str) {
-              let pattern = /[0-9]\.[0-9][0-9.]{0,}/g;
-              return str.match(pattern);
-            }
-            function firstNum(version) {
-              return version[0].split(".")[0];
-            }
-
-            let issueVer = parseVersion(body.substring(index1 + item1.length, index2));
-
-            if (issueVer == undefined) {
-              console.log(errorStr);
-              return;
-            }
-            console.log("Version from issue: " + issueVer[0]);
-
-            let latestVer = parseVersion(process.env.LATEST_TAG);
-
-            if (latestVer == undefined) {
-              console.log(errorStr);
-              return;
-            }
-            console.log("Version from tags: " + latestVer[0]);
-
-            let issueNum = firstNum(issueVer);
-            let latestNum = firstNum(latestVer);
-
-            let macos_ver = process.env.LATEST_MACOS;
-            console.log("Telegram for MacOS version from website: " + macos_ver);
-
-            if (issueNum <= latestNum && issueNum < macos_ver) {
-              console.log("Seems the version of this issue is fine!");
-              return;
-            }
-            if (issueNum > macos_ver) {
-              let message = `Seems like it's neither the Telegram Desktop\
-              nor the Telegram for macOS version.
-              `;
-              console.log(message);
-              return;
-            }
-
-            let message = `
-            Sorry, but according to the version you specify in this issue, \
-            you are using the [Telegram for macOS](https://macos.telegram.org), \
-            not the [Telegram Desktop](https://desktop.telegram.org).
-            You can report your issue to [the group](https://t.me/macswift) \
-            or to [the repository of Telegram for macOS](https://github.com/overtake/TelegramSwift).
-
-            **If I made a mistake and closed your issue wrongly, please reopen it. Thanks!**
-            `;
-
-            let params = {
-              owner: context.issue.owner,
-              repo: context.issue.repo,
-              issue_number: context.issue.number
-            };
-
-            github.issues.createComment({
-              ...params,
-              body: message
-            });
-
-            github.issues.addLabels({
-              ...params,
-              labels: ['TG macOS Swift']
-            });
-
-            github.issues.update({
-              ...params,
-              state: 'closed'
-            });
-
+          token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/linux.yml

@@ -45,69 +45,35 @@ on:
 jobs:
 
   linux:
-    name: Ubuntu 14.04
+    name: CentOS 7
     runs-on: ubuntu-latest
-    container: ubuntu:trusty
+    container:
+      image: docker.pkg.github.com/telegramdesktop/tdesktop/centos_env
+      credentials:
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    defaults:
+      run:
+        shell: scl enable devtoolset-9 -- bash --noprofile --norc -eo pipefail {0}
 
     strategy:
       matrix:
         defines:
           - ""
           - "DESKTOP_APP_DISABLE_DBUS_INTEGRATION"
+          - "DESKTOP_APP_DISABLE_X11_INTEGRATION"
+          - "DESKTOP_APP_DISABLE_WAYLAND_INTEGRATION"
+          - "DESKTOP_APP_DISABLE_GTK_INTEGRATION"
+          - "LIBTGVOIP_DISABLE_ALSA"
+          - "LIBTGVOIP_DISABLE_PULSEAUDIO"
 
     env:
-      GIT: "https://github.com"
-      QT: "5_12_8"
-      QT_PREFIX: "/usr/local/desktop-app/Qt-5.12.8"
-      OPENSSL_VER: "1_1_1"
-      OPENSSL_PREFIX: "/usr/local/desktop-app/openssl-1.1.1"
-      CMAKE_VER: "3.17.0"
       UPLOAD_ARTIFACT: "false"
-      ONLY_CACHE: "false"
-      MANUAL_CACHING: "6"
-      DOC_PATH: "docs/building-cmake.md"
-      AUTO_CACHING: "1"
 
     steps:
       - name: Get repository name.
-        run: echo ::set-env name=REPO_NAME::${GITHUB_REPOSITORY##*/}
-
-      - name: Disable man for further package installs.
-        run: |
-          cfgFile="/etc/dpkg/dpkg.cfg.d/no_man"
-          sudo touch $cfgFile
-          p() {
-            sudo echo "path-exclude=/usr/share/$1/*" >> $cfgFile
-          }
-
-          p man
-          p locale
-          p doc
-
-      - name: Apt install.
-        shell: bash
-        run: |
-          sudo apt-get update
-          sudo apt-get install software-properties-common -y && \
-          sudo add-apt-repository ppa:git-core/ppa -y && \
-          sudo apt-get update && \
-          sudo apt-get install git libexif-dev liblzma-dev libz-dev libssl-dev \
-          libgtk2.0-dev libice-dev libsm-dev libicu-dev libdrm-dev dh-autoreconf \
-          autoconf automake build-essential libxml2-dev libass-dev libfreetype6-dev \
-          libgpac-dev libsdl1.2-dev libtheora-dev libtool libva-dev libvdpau-dev \
-          libvorbis-dev libxcb1-dev libxcb-image0-dev libxcb-shm0-dev \
-          libxcb-xfixes0-dev libxcb-keysyms1-dev libxcb-icccm4-dev libatspi2.0-dev \
-          libxcb-render-util0-dev libxcb-util0-dev libxcb-xkb-dev libxrender-dev \
-          libasound-dev libpulse-dev libxcb-sync0-dev libxcb-randr0-dev libegl1-mesa-dev \
-          libx11-xcb-dev libffi-dev libncurses5-dev pkg-config texi2html bison yasm \
-          zlib1g-dev xutils-dev python-xcbgen chrpath gperf wget -y --force-yes && \
-          sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \
-          sudo apt-get update && \
-          sudo apt-get install gcc-8 g++-8 -y && \
-          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 60 && \
-          sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-8 60 && \
-          sudo update-alternatives --config gcc && \
-          sudo add-apt-repository --remove ppa:ubuntu-toolchain-r/test -y
+        run: echo "REPO_NAME=${GITHUB_REPOSITORY##*/}" >> $GITHUB_ENV
 
       - name: Clone.
         uses: actions/checkout@v2
@@ -116,416 +82,39 @@ jobs:
           path: ${{ env.REPO_NAME }}
 
       - name: First set up.
-        shell: bash
         run: |
           gcc --version
-
-          gcc --version > CACHE_KEY.txt
-          echo $MANUAL_CACHING >> CACHE_KEY.txt
-          if [ "$AUTO_CACHING" == "1" ]; then
-            thisFile=$REPO_NAME/.github/workflows/linux.yml
-            echo `md5sum $thisFile | cut -c -32` >> CACHE_KEY.txt
-          fi
-          md5cache=$(md5sum CACHE_KEY.txt | cut -c -32)
-          echo ::set-env name=CACHE_KEY::$md5cache
-
-          mkdir -p Libraries
-          cd Libraries
-          echo ::set-env name=LibrariesPath::`pwd`
-
-      - name: Patches.
-        run: |
-          echo "Find necessary commit from doc."
-          checkoutCommit=$(grep -A 1 "cd patches" $REPO_NAME/$DOC_PATH | sed -n 2p)
-          cd $LibrariesPath
-          git clone $GIT/desktop-app/patches.git
-          cd patches
-          eval $checkoutCommit
-
-      - name: CMake.
-        run: |
-          cd $LibrariesPath
-
-          file=cmake-$CMAKE_VER-Linux-x86_64.sh
-          wget $GIT/Kitware/CMake/releases/download/v$CMAKE_VER/$file
-          sudo mkdir /opt/cmake
-          sudo sh $file --prefix=/opt/cmake --skip-license
-          sudo ln -s /opt/cmake/bin/cmake /usr/local/bin/cmake
-          rm $file
-
-          cmake --version
-
-      - name: Opus cache.
-        id: cache-opus
-        uses: actions/cache@v1
-        with:
-          path: ${{ env.LibrariesPath }}/opus
-          key: ${{ runner.OS }}-opus-${{ env.CACHE_KEY }}
-      - name: Opus.
-        if: steps.cache-opus.outputs.cache-hit != 'true'
-        run: |
-          cd $LibrariesPath
-
-          git clone -b v1.3 --depth=1 $GIT/xiph/opus
-          cd opus
-          ./autogen.sh
-          ./configure
-          make -j$(nproc)
-      - name: Opus install.
-        run: |
-          cd $LibrariesPath/opus
-          sudo make install
-
-      - name: Libva.
-        run: |
-          cd $LibrariesPath
-
-          git clone $GIT/01org/libva.git
-          cd libva
-          ./autogen.sh --enable-static
-          make -j$(nproc)
-          sudo make install
-          cd ..
-          rm -rf libva
-
-      - name: Libvdpau.
-        run: |
-          cd $LibrariesPath
-
-          git clone -b libvdpau-1.2 --depth=1 https://gitlab.freedesktop.org/vdpau/libvdpau.git
-          cd libvdpau
-          ./autogen.sh --enable-static
-          make -j$(nproc)
-          sudo make install
-          cd ..
-          rm -rf libvdpau
-
-      - name: FFmpeg cache.
-        id: cache-ffmpeg
-        uses: actions/cache@v1
-        with:
-          path: ${{ env.LibrariesPath }}/ffmpeg-cache
-          key: ${{ runner.OS }}-ffmpeg-${{ env.CACHE_KEY }}
-      - name: FFmpeg build.
-        if: steps.cache-ffmpeg.outputs.cache-hit != 'true'
-        run: |
-          cd $LibrariesPath
-
-          git clone --branch release/3.4 $GIT/FFmpeg/FFmpeg ffmpeg
-          cd ffmpeg
-          ./configure \
-          --disable-debug \
-          --disable-programs \
-          --disable-doc \
-          --disable-network \
-          --disable-autodetect \
-          --disable-everything \
-          --disable-neon \
-          --disable-iconv \
-          --enable-libopus \
-          --enable-vaapi \
-          --enable-vdpau \
-          --enable-protocol=file \
-          --enable-hwaccel=h264_vaapi \
-          --enable-hwaccel=h264_vdpau \
-          --enable-hwaccel=mpeg4_vaapi \
-          --enable-hwaccel=mpeg4_vdpau \
-          --enable-decoder=aac \
-          --enable-decoder=aac_fixed \
-          --enable-decoder=aac_latm \
-          --enable-decoder=aasc \
-          --enable-decoder=alac \
-          --enable-decoder=flac \
-          --enable-decoder=gif \
-          --enable-decoder=h264 \
-          --enable-decoder=h264_vdpau \
-          --enable-decoder=hevc \
-          --enable-decoder=mp1 \
-          --enable-decoder=mp1float \
-          --enable-decoder=mp2 \
-          --enable-decoder=mp2float \
-          --enable-decoder=mp3 \
-          --enable-decoder=mp3adu \
-          --enable-decoder=mp3adufloat \
-          --enable-decoder=mp3float \
-          --enable-decoder=mp3on4 \
-          --enable-decoder=mp3on4float \
-          --enable-decoder=mpeg4 \
-          --enable-decoder=mpeg4_vdpau \
-          --enable-decoder=msmpeg4v2 \
-          --enable-decoder=msmpeg4v3 \
-          --enable-decoder=opus \
-          --enable-decoder=pcm_alaw \
-          --enable-decoder=pcm_f32be \
-          --enable-decoder=pcm_f32le \
-          --enable-decoder=pcm_f64be \
-          --enable-decoder=pcm_f64le \
-          --enable-decoder=pcm_lxf \
-          --enable-decoder=pcm_mulaw \
-          --enable-decoder=pcm_s16be \
-          --enable-decoder=pcm_s16be_planar \
-          --enable-decoder=pcm_s16le \
-          --enable-decoder=pcm_s16le_planar \
-          --enable-decoder=pcm_s24be \
-          --enable-decoder=pcm_s24daud \
-          --enable-decoder=pcm_s24le \
-          --enable-decoder=pcm_s24le_planar \
-          --enable-decoder=pcm_s32be \
-          --enable-decoder=pcm_s32le \
-          --enable-decoder=pcm_s32le_planar \
-          --enable-decoder=pcm_s64be \
-          --enable-decoder=pcm_s64le \
-          --enable-decoder=pcm_s8 \
-          --enable-decoder=pcm_s8_planar \
-          --enable-decoder=pcm_u16be \
-          --enable-decoder=pcm_u16le \
-          --enable-decoder=pcm_u24be \
-          --enable-decoder=pcm_u24le \
-          --enable-decoder=pcm_u32be \
-          --enable-decoder=pcm_u32le \
-          --enable-decoder=pcm_u8 \
-          --enable-decoder=pcm_zork \
-          --enable-decoder=vorbis \
-          --enable-decoder=wavpack \
-          --enable-decoder=wmalossless \
-          --enable-decoder=wmapro \
-          --enable-decoder=wmav1 \
-          --enable-decoder=wmav2 \
-          --enable-decoder=wmavoice \
-          --enable-encoder=libopus \
-          --enable-parser=aac \
-          --enable-parser=aac_latm \
-          --enable-parser=flac \
-          --enable-parser=h264 \
-          --enable-parser=hevc \
-          --enable-parser=mpeg4video \
-          --enable-parser=mpegaudio \
-          --enable-parser=opus \
-          --enable-parser=vorbis \
-          --enable-demuxer=aac \
-          --enable-demuxer=flac \
-          --enable-demuxer=gif \
-          --enable-demuxer=h264 \
-          --enable-demuxer=hevc \
-          --enable-demuxer=m4v \
-          --enable-demuxer=mov \
-          --enable-demuxer=mp3 \
-          --enable-demuxer=ogg \
-          --enable-demuxer=wav \
-          --enable-muxer=ogg \
-          --enable-muxer=opus
-
-          make -j$(nproc)
-          sudo make DESTDIR="$LibrariesPath/ffmpeg-cache" install
-          cd ..
-          rm -rf ffmpeg
-      - name: FFmpeg install.
-        run: |
-          cd $LibrariesPath
-          #List of files from cmake/external/ffmpeg/CMakeLists.txt.
-          copyLib() {
-            mkdir -p ffmpeg/$1
-            yes | cp -i ffmpeg-cache/usr/local/lib/$1.a ffmpeg/$1/$1.a
-          }
-          copyLib libavformat
-          copyLib libavcodec
-          copyLib libswresample
-          copyLib libswscale
-          copyLib libavutil
-
-          sudo cp -R ffmpeg-cache/. /
-
-      - name: OpenAL Soft.
-        run: |
-          cd $LibrariesPath
-
-          git clone -b openal-soft-1.20.1 --depth=1 $GIT/kcat/openal-soft.git
-          cd openal-soft/build
-          cmake .. \
-          -DCMAKE_BUILD_TYPE=Release \
-          -DLIBTYPE:STRING=STATIC \
-          -DALSOFT_EXAMPLES=OFF \
-          -DALSOFT_TESTS=OFF \
-          -DALSOFT_UTILS=OFF \
-          -DALSOFT_CONFIG=OFF
-          make -j$(nproc)
-          sudo make install
-          cd -
-          rm -rf openal-soft
-
-      - name: OpenSSL cache.
-        id: cache-openssl
-        uses: actions/cache@v1
-        with:
-          path: ${{ env.LibrariesPath }}/openssl-cache
-          key: ${{ runner.OS }}-${{ env.OPENSSL_VER }}-${{ env.CACHE_KEY }}
-      - name: OpenSSL build.
-        if: steps.cache-openssl.outputs.cache-hit != 'true'
-        run: |
-          cd $LibrariesPath
-
-          opensslDir=openssl_${OPENSSL_VER}
-          git clone -b OpenSSL_${OPENSSL_VER}-stable --depth=1 \
-            $GIT/openssl/openssl $opensslDir
-          cd $opensslDir
-          ./config --prefix="$OPENSSL_PREFIX"
-          make -j$(nproc)
-          sudo make DESTDIR="$LibrariesPath/openssl-cache" install_sw
-          cd ..
-          rm -rf $opensslDir
-      - name: OpenSSL install.
-        run: |
-          cd $LibrariesPath
-          sudo cp -R openssl-cache/. /
-
-      - name: Libxkbcommon.
-        run: |
-          cd $LibrariesPath
-
-          git clone -b xkbcommon-0.8.4 --depth=1 $GIT/xkbcommon/libxkbcommon.git
-          cd libxkbcommon
-          ./autogen.sh
-          make -j$(nproc)
-          sudo make install
-          cd ..
-          rm -rf libxkbcommon
-
-      - name: Libwayland.
-        run: |
-          cd $LibrariesPath
-
-          git clone -b 1.16 https://gitlab.freedesktop.org/wayland/wayland
-          cd wayland
-          ./autogen.sh --enable-static --disable-documentation  --disable-dtd-validation
-          make -j$(nproc)
-          sudo make install
-          cd ..
-          rm -rf wayland
-
-      - name: Qt 5.12.8 cache.
-        id: cache-qt
-        uses: actions/cache@v1
-        with:
-          path: ${{ env.LibrariesPath }}/qt-cache
-          key: ${{ runner.OS }}-qt-${{ env.CACHE_KEY }}-${{ hashFiles('**/qtbase_5_12_8.diff') }}
-      - name: Qt 5.12.8 build.
-        if: steps.cache-qt.outputs.cache-hit != 'true'
-        run: |
-          cd $LibrariesPath
-
-          git clone -b v5.12.8 --depth=1 git://code.qt.io/qt/qt5.git qt_${QT}
-          cd qt_${QT}
-          perl init-repository --module-subset=qtbase,qtwayland,qtimageformats,qtsvg,qtx11extras
-          git submodule update qtbase qtwayland qtimageformats qtsvg qtx11extras
-          cd qtbase
-          git apply ../../patches/qtbase_${QT}.diff
-          cd ../
-
-          ./configure -prefix "$QT_PREFIX" \
-          -release \
-          -opensource \
-          -confirm-license \
-          -qt-zlib \
-          -qt-libpng \
-          -qt-libjpeg \
-          -qt-harfbuzz \
-          -qt-pcre \
-          -qt-xcb \
-          -no-gtk \
-          -static \
-          -dbus-runtime \
-          -openssl-linked \
-          -I "$OPENSSL_PREFIX/include" OPENSSL_LIBS="$OPENSSL_PREFIX/lib/libssl.a $OPENSSL_PREFIX/lib/libcrypto.a -ldl -lpthread" \
-          -nomake examples \
-          -nomake tests
-
-          make -j$(nproc)
-          sudo make INSTALL_ROOT="$LibrariesPath/qt-cache" install
-          cd ..
-          rm -rf qt_${QT}
-      - name: Qt 5.12.8 install.
-        run: |
-          cd $LibrariesPath
-          sudo cp -R qt-cache/. /
-
-      - name: Breakpad cache.
-        id: cache-breakpad
-        uses: actions/cache@v1
-        with:
-          path: ${{ env.LibrariesPath }}/breakpad-cache
-          key: ${{ runner.OS }}-breakpad-${{ env.CACHE_KEY }}
-      - name: Breakpad clone.
-        run: |
-          cd $LibrariesPath
-
-          git clone https://chromium.googlesource.com/breakpad/breakpad
-          cd breakpad
-          git checkout bc8fb886
-          git clone https://chromium.googlesource.com/linux-syscall-support src/third_party/lss
-          cd src/third_party/lss
-          git checkout a91633d1
-      - name: Breakpad build.
-        if: steps.cache-breakpad.outputs.cache-hit != 'true'
-        run: |
-          cd $LibrariesPath
-
-          BreakpadCache=$LibrariesPath/breakpad-cache
-
-          git clone https://chromium.googlesource.com/external/gyp
-          cd gyp
-          git checkout 9f2a7bb1
-          git apply ../patches/gyp.diff
-          cd ..
-
-          cd breakpad
-          ./configure
-          make -j$(nproc)
-          sudo make DESTDIR="$BreakpadCache" install
-          cd src
-          rm -r testing
-          git clone $GIT/google/googletest testing
-          cd tools
-          sed -i 's/minidump_upload.m/minidump_upload.cc/' linux/tools_linux.gypi
-          ../../../gyp/gyp  --depth=. --generator-output=.. -Goutput_dir=../out tools.gyp --format=cmake
-          cd ../../out/Default
-          cmake .
-          make -j$(nproc) dump_syms
-
-          mv dump_syms $BreakpadCache/
-          cd ..
-          rm -rf gyp breakpad
-      - name: Breakpad install.
-        run: |
-          cd $LibrariesPath
-          sudo cp -R breakpad-cache/. /
-          mkdir -p breakpad/out/Default/
-          cp breakpad-cache/dump_syms breakpad/out/Default/dump_syms
+          ln -s $LibrariesPath Libraries
 
       - name: Telegram Desktop build.
-        if: env.ONLY_CACHE == 'false'
         run: |
           cd $REPO_NAME/Telegram
 
           DEFINE=""
           if [ -n "${{ matrix.defines }}" ]; then
             DEFINE="-D ${{ matrix.defines }}=ON"
+            if [ "${{ matrix.defines }}" == "DESKTOP_APP_DISABLE_DBUS_INTEGRATION" ]; then
+              DEFINE="$DEFINE -D DESKTOP_APP_DISABLE_GTK_INTEGRATION=ON"
+            fi
             echo Define from matrix: $DEFINE
-            echo ::set-env name=ARTIFACT_NAME::Telegram_${{ matrix.defines }}
+            echo "ARTIFACT_NAME=Telegram_${{ matrix.defines }}" >> $GITHUB_ENV
           else
-            echo ::set-env name=ARTIFACT_NAME::Telegram
+            echo "ARTIFACT_NAME=Telegram" >> $GITHUB_ENV
           fi
 
           ./configure.sh \
-          -D CMAKE_CXX_FLAGS="-s" \
+          -D CMAKE_C_FLAGS="-Werror" \
+          -D CMAKE_CXX_FLAGS="-Werror" \
+          -D CMAKE_EXE_LINKER_FLAGS="-s" \
           -D TDESKTOP_API_TEST=ON \
           -D DESKTOP_APP_USE_PACKAGED=OFF \
+          -D DESKTOP_APP_DISABLE_CRASH_REPORTS=OFF \
           $DEFINE
 
           cd ../out/Debug
           make -j$(nproc)
 
       - name: Check.
-        if: env.ONLY_CACHE == 'false'
         run: |
           filePath="$REPO_NAME/out/Debug/bin/Telegram"
           if test -f "$filePath"; then

.github/workflows/lock.yml

@@ -0,0 +1,23 @@
+name: 'Lock Threads'
+
+on:
+  schedule:
+    - cron: '0 * * * *'
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v2
+        with:
+          github-token: ${{ github.token }}
+          issue-lock-inactive-days: 45
+          pr-lock-inactive-days: 45
+          issue-lock-comment: >
+            This issue has been automatically locked since there
+            has not been any recent activity after it was closed.
+            Please open a new issue for related bugs.
+          pr-lock-comment: >
+            This pull request has been automatically locked since there
+            has not been any recent activity after it was closed.
+            Please open a new issue for related bugs.

.github/workflows/mac.yml

@@ -56,10 +56,10 @@ jobs:
       GIT: "https://github.com"
       PREFIX: "/usr/local/macos"
       MACOSX_DEPLOYMENT_TARGET: "10.12"
-      XZ: "xz-5.2.4"
-      QT: "5_12_8"
+      XZ: "xz-5.2.5"
+      QT: "5_15_2"
       OPENSSL_VER: "1_1_1"
-      QT_PREFIX: "/usr/local/desktop-app/Qt-5.12.8"
+      QT_PREFIX: "/usr/local/desktop-app/Qt-5.15.2"
       LIBICONV_VER: "libiconv-1.16"
       UPLOAD_ARTIFACT: "false"
       ONLY_CACHE: "false"
@@ -69,7 +69,7 @@ jobs:
 
     steps:
       - name: Get repository name.
-        run: echo ::set-env name=REPO_NAME::${GITHUB_REPOSITORY##*/}
+        run: echo "REPO_NAME=${GITHUB_REPOSITORY##*/}" >> $GITHUB_ENV
 
       - name: Clone.
         uses: actions/checkout@v2
@@ -79,26 +79,33 @@ jobs:
 
       - name: First set up.
         run: |
+          sudo chown -R `whoami`:admin /usr/local/share
           brew install automake fdk-aac lame libass libtool libvorbis libvpx \
           ninja opus sdl shtool texi2html theora x264 xvid yasm pkg-config
 
+          # Disable spotlight.
+          sudo mdutil -a -i off
+
           sudo xcode-select -s /Applications/Xcode.app/Contents/Developer
 
           xcodebuild -version > CACHE_KEY.txt
           echo $MIN_MAC >> CACHE_KEY.txt
           echo $PREFIX >> CACHE_KEY.txt
           echo $MANUAL_CACHING >> CACHE_KEY.txt
+          echo "$GITHUB_WORKSPACE" >> CACHE_KEY.txt
           if [ "$AUTO_CACHING" == "1" ]; then
             thisFile=$REPO_NAME/.github/workflows/mac.yml
             echo `md5 -q $thisFile` >> CACHE_KEY.txt
           fi
-          echo ::set-env name=CACHE_KEY::`md5 -q CACHE_KEY.txt`
+          echo "CACHE_KEY=`md5 -q CACHE_KEY.txt`" >> $GITHUB_ENV
 
-          echo ::add-path::$PWD/Libraries/depot_tools
+          echo "$PWD/Libraries/depot_tools" >> $GITHUB_PATH
 
           mkdir -p Libraries/macos
           cd Libraries/macos
-          echo ::set-env name=LibrariesPath::`pwd`
+          echo "LibrariesPath=`pwd`" >> $GITHUB_ENV
+
+          curl -o tg_owt-version.json https://api.github.com/repos/desktop-app/tg_owt/git/refs/heads/master
 
       - name: Patches.
         run: |
@@ -130,9 +137,23 @@ jobs:
           make -j$(nproc)
           sudo make install
 
+      - name: MozJPEG.
+        run: |
+          cd $LibrariesPath
+
+          git clone -b v4.0.1-rc2 $GIT/mozilla/mozjpeg.git
+          cd mozjpeg
+          cmake -B build . \
+          -DCMAKE_BUILD_TYPE=Release \
+          -DCMAKE_INSTALL_PREFIX=$PREFIX \
+          -DWITH_JPEG8=ON \
+          -DPNG_SUPPORTED=OFF
+          cmake --build build -j$(nproc)
+          sudo cmake --install build
+
       - name: OpenSSL cache.
         id: cache-openssl
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/openssl_${{ env.OPENSSL_VER }}
           key: ${{ runner.OS }}-${{ env.OPENSSL_VER }}-${{ env.CACHE_KEY }}
@@ -146,12 +167,13 @@ jobs:
           git checkout OpenSSL_"$OPENSSL_VER"-stable
           ./Configure \
           --prefix=$PREFIX \
+          no-tests \
           darwin64-x86_64-cc \
           -static \
           $MIN_MAC
           make build_libs -j$(nproc)
 
-          SSL_DIR=$LibrariesPath/openssl_${{ env.OPENSSL_VER }}
+          SSL_DIR=$LibrariesPath/openssl_$OPENSSL_VER
           mkdir -p $SSL_DIR/include
           copyLib() {
             cp $1.a $SSL_DIR/$1.a
@@ -162,9 +184,9 @@ jobs:
 
       - name: Opus cache.
         id: cache-opus
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
-          path: ${{ env.LibrariesPath }}/opus
+          path: ${{ env.LibrariesPath }}/opus-cache
           key: ${{ runner.OS }}-opus-${{ env.CACHE_KEY }}
       - name: Opus.
         if: steps.cache-opus.outputs.cache-hit != 'true'
@@ -177,16 +199,27 @@ jobs:
           ./autogen.sh
           CFLAGS="$MIN_MAC $UNGUARDED" CPPFLAGS="$MIN_MAC $UNGUARDED" LDFLAGS="$MIN_MAC" ./configure --prefix=$PREFIX
           make -j$(nproc)
+          sudo make DESTDIR="$LibrariesPath/opus-cache" install
       - name: Opus install.
         run: |
-          cd $LibrariesPath/opus
-          sudo make install
+          cd $LibrariesPath
+          sudo cp -R opus-cache/. /
+
+      - name: Rnnoise.
+        run: |
+          cd $LibrariesPath
+
+          git clone $GIT/desktop-app/rnnoise.git
+          mkdir -p rnnoise/out/Debug
+          cd rnnoise/out/Debug
+          cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug ../..
+          ninja
 
       - name: Libiconv cache.
         id: cache-libiconv
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
-          path: ${{ env.LibrariesPath }}/${{ env.LIBICONV_VER }}
+          path: ${{ env.LibrariesPath }}/libiconv-cache
           key: ${{ runner.OS }}-${{ env.LIBICONV_VER }}-${{ env.CACHE_KEY }}
       - name: Libiconv.
         if: steps.cache-libiconv.outputs.cache-hit != 'true'
@@ -198,14 +231,15 @@ jobs:
           cd $LIBICONV_VER
           CFLAGS="$MIN_MAC $UNGUARDED" CPPFLAGS="$MIN_MAC $UNGUARDED" LDFLAGS="$MIN_MAC" ./configure --enable-static --prefix=$PREFIX
           make -j$(nproc)
+          sudo make DESTDIR="$LibrariesPath/libiconv-cache" install
       - name: Libiconv install.
         run: |
-          cd $LibrariesPath/$LIBICONV_VER
-          sudo make install
+          cd $LibrariesPath
+          sudo cp -R libiconv-cache/. /
 
       - name: FFmpeg cache.
         id: cache-ffmpeg
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/ffmpeg-cache
           key: ${{ runner.OS }}-ffmpeg-${{ env.CACHE_KEY }}
@@ -216,7 +250,7 @@ jobs:
 
           git clone $GIT/FFmpeg/FFmpeg.git ffmpeg
           cd ffmpeg
-          git checkout release/3.4
+          git checkout release/4.4
           CFLAGS=`freetype-config --cflags`
           LDFLAGS=`freetype-config --libs`
           PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig:/usr/lib/pkgconfig:/usr/X11/lib/pkgconfig
@@ -225,7 +259,9 @@ jobs:
           --extra-cflags="$MIN_MAC $UNGUARDED" \
           --extra-cxxflags="$MIN_MAC $UNGUARDED" \
           --extra-ldflags="$MIN_MAC" \
-          --enable-protocol=file --enable-libopus \
+          --x86asmexe=`pwd`/macos_yasm_wrap.sh \
+          --enable-protocol=file \
+          --enable-libopus \
           --disable-programs \
           --disable-doc \
           --disable-network \
@@ -291,7 +327,6 @@ jobs:
           --enable-decoder=pcm_u32be \
           --enable-decoder=pcm_u32le \
           --enable-decoder=pcm_u8 \
-          --enable-decoder=pcm_zork \
           --enable-decoder=vorbis \
           --enable-decoder=wavpack \
           --enable-decoder=wmalossless \
@@ -327,7 +362,7 @@ jobs:
       - name: FFmpeg install.
         run: |
           cd $LibrariesPath
-          #List of files from cmake/external/ffmpeg/CMakeLists.txt.
+          # List of files from cmake/external/ffmpeg/CMakeLists.txt.
           copyLib() {
             mkdir -p ffmpeg/$1
             \cp -fR ffmpeg-cache/lib/$1.a ffmpeg/$1/$1.a
@@ -338,17 +373,15 @@ jobs:
           copyLib libswscale
           copyLib libavutil
 
-          sudo cp -R ffmpeg-cache/. /usr/local/
+          sudo cp -R ffmpeg-cache/. $PREFIX
           sudo cp -R ffmpeg-cache/include/. ffmpeg/
 
       - name: OpenAL Soft.
         run: |
           cd $LibrariesPath
 
-          git clone $GIT/kcat/openal-soft.git
-          cd openal-soft
-          git checkout openal-soft-1.19.1
-          cd build
+          git clone --branch capture_with_webrtc $GIT/telegramdesktop/openal-soft.git
+          cd openal-soft/build
 
           CFLAGS="$UNGUARDED" CPPFLAGS="$UNGUARDED" cmake \
           -D CMAKE_INSTALL_PREFIX:PATH=$PREFIX \
@@ -361,7 +394,7 @@ jobs:
 
       - name: Crashpad cache.
         id: cache-crashpad
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/crashpad
           key: ${{ runner.OS }}-crashpad-${{ env.CACHE_KEY }}-${{ hashFiles('**/crashpad.diff') }}-${{ hashFiles('**/mini_chromium.diff') }}
@@ -398,32 +431,32 @@ jobs:
           build/gyp_crashpad.py -Dmac_deployment_target=10.10
           ninja -C out/Debug
 
-      - name: Qt 5.12.8 cache.
+      - name: Qt 5.15.2 cache.
         id: cache-qt
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/qt-cache
-          key: ${{ runner.OS }}-qt-${{ env.CACHE_KEY }}-${{ hashFiles('**/qtbase_5_12_8.diff') }}
-      - name: Use cached Qt 5.12.8.
+          key: ${{ runner.OS }}-qt-${{ env.CACHE_KEY }}-${{ hashFiles('**/qtbase_5_15_2/*') }}
+      - name: Use cached Qt 5.15.2.
         if: steps.cache-qt.outputs.cache-hit == 'true'
         run: |
           cd $LibrariesPath
-          mv qt-cache Qt-5.12.8
+          mv qt-cache Qt-5.15.2
           sudo mkdir -p $QT_PREFIX
-          sudo mv -f Qt-5.12.8 "$(dirname "$QT_PREFIX")"/
-      - name: Qt 5.12.8 build.
+          sudo mv -f Qt-5.15.2 "$(dirname "$QT_PREFIX")"/
+      - name: Qt 5.15.2 build.
         if: steps.cache-qt.outputs.cache-hit != 'true'
         run: |
           cd $LibrariesPath
 
-          git clone git://code.qt.io/qt/qt5.git qt$QT
-          cd qt$QT
+          git clone git://code.qt.io/qt/qt5.git qt_$QT
+          cd qt_$QT
           perl init-repository --module-subset=qtbase,qtimageformats
-          git checkout v5.12.8
+          git checkout v5.15.2
           git submodule update qtbase
           git submodule update qtimageformats
           cd qtbase
-          git apply ../../patches/qtbase_$QT.diff
+          find ../../patches/qtbase_$QT -type f -print0 | sort -z | xargs -0 git apply
           cd ..
 
           ./configure \
@@ -438,7 +471,10 @@ jobs:
           -securetransport \
           -nomake examples \
           -nomake tests \
-          -platform macx-clang
+          -platform macx-clang \
+          -I "$PREFIX/include" \
+          LIBJPEG_LIBS="$PREFIX/lib/libjpeg.a" \
+          ZLIB_LIBS="$PREFIX/lib/libz.a"
 
           make -j$(nproc)
           sudo make install
@@ -446,6 +482,38 @@ jobs:
           make clean
           cp -r $QT_PREFIX $LibrariesPath/qt-cache
 
+      - name: WebRTC cache.
+        id: cache-webrtc
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/tg_owt
+          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}-${{ hashFiles('**/tg_owt-version.json') }}
+      - name: WebRTC.
+        if: steps.cache-webrtc.outputs.cache-hit != 'true'
+        run: |
+          cd $LibrariesPath
+
+          git clone --recursive $GIT/desktop-app/tg_owt.git
+          mkdir -p tg_owt/out/Debug
+          cd tg_owt/out/Debug
+          cmake -G Ninja \
+          -DCMAKE_BUILD_TYPE=Debug \
+          -DTG_OWT_SPECIAL_TARGET=mac \
+          -DTG_OWT_BUILD_AUDIO_BACKENDS=OFF \
+          -DTG_OWT_LIBJPEG_INCLUDE_PATH=$PREFIX/include \
+          -DTG_OWT_OPENSSL_INCLUDE_PATH=`pwd`/../../../openssl_$OPENSSL_VER/include \
+          -DTG_OWT_OPUS_INCLUDE_PATH=$PREFIX/include/opus \
+          -DTG_OWT_FFMPEG_INCLUDE_PATH=$PREFIX/include \
+          ../..
+          ninja
+
+          # Cleanup.
+          cd $LibrariesPath/tg_owt
+          mv out/Debug/libtg_owt.a libtg_owt.a
+          rm -rf out
+          mkdir -p out/Debug
+          mv libtg_owt.a out/Debug/libtg_owt.a
+
       - name: Telegram Desktop build.
         if: env.ONLY_CACHE == 'false'
         run: |
@@ -455,12 +523,18 @@ jobs:
           if [ -n "${{ matrix.defines }}" ]; then
             DEFINE="-D ${{ matrix.defines }}=ON"
             echo Define from matrix: $DEFINE
-            echo ::set-env name=ARTIFACT_NAME::Telegram_${{ matrix.defines }}
+            echo "ARTIFACT_NAME=Telegram_${{ matrix.defines }}" >> $GITHUB_ENV
           else
-            echo ::set-env name=ARTIFACT_NAME::Telegram
+            echo "ARTIFACT_NAME=Telegram" >> $GITHUB_ENV
           fi
 
-          ./configure.sh -D TDESKTOP_API_TEST=ON -D DESKTOP_APP_USE_PACKAGED=OFF $DEFINE
+          ./configure.sh \
+          -D CMAKE_C_FLAGS="-Werror" \
+          -D CMAKE_CXX_FLAGS="-Werror" \
+          -D TDESKTOP_API_TEST=ON \
+          -D DESKTOP_APP_USE_PACKAGED=OFF \
+          -D DESKTOP_APP_DISABLE_CRASH_REPORTS=OFF \
+          $DEFINE
 
           cd ../out
 

.github/workflows/snap.yml

@@ -12,7 +12,6 @@ on:
       - '!.github/workflows/snap.yml'
       - 'Telegram/build/**'
       - 'Telegram/Patches/**'
-      - '!Telegram/Patches/ffmpeg.diff'
       - 'Telegram/Resources/uwp/**'
       - 'Telegram/Resources/winrc/**'
       - 'Telegram/SourceFiles/platform/win/**'
@@ -31,7 +30,6 @@ on:
       - '!.github/workflows/snap.yml'
       - 'Telegram/build/**'
       - 'Telegram/Patches/**'
-      - '!Telegram/Patches/ffmpeg.diff'
       - 'Telegram/Resources/uwp/**'
       - 'Telegram/Resources/winrc/**'
       - 'Telegram/SourceFiles/platform/win/**'
@@ -43,79 +41,43 @@ on:
 jobs:
 
   linux:
-    name: Ubuntu 18.04
-    runs-on: ubuntu-18.04
+    name: Ubuntu
+    runs-on: ubuntu-latest
 
     env:
       UPLOAD_ARTIFACT: "false"
-      ONLY_CACHE: "false"
-      MANUAL_CACHING: "5"
 
     steps:
       - name: Clone.
         uses: actions/checkout@v2
         with:
+          fetch-depth: 0
           submodules: recursive
 
       - name: First set up.
         run: |
-          sudo apt-get update
-          sudo apt-get install gcc-8 g++-8 -y
+          sudo apt-get purge --autoremove lxd
+
           sudo snap install --classic snapcraft
+          sudo snap install lxd
 
           # Workaround for snapcraft
           # See https://forum.snapcraft.io/t/13258
           sudo chown root:root /
 
-          md5() {
-            md5cache=$(md5sum $1.txt | cut -c -32)
-            echo ::set-env name=$1::$md5cache
-          }
-          keyFor() {
-            keyName="${1^^}_CACHE_KEY"
-            awk -v RS="" -v ORS="\n\n" '/^  '"$1"':/' snap/snapcraft.yaml > $keyName.txt
-            md5 $keyName
-          }
+          sudo usermod -aG lxd $USER
 
-          snap run snapcraft --version > CACHE_KEY.txt
-          gcc-8 --version >> CACHE_KEY.txt
-          echo $MANUAL_CACHING >> CACHE_KEY.txt
-          md5 CACHE_KEY
-
-          keyFor cmake
-          keyFor ffmpeg
-
-      - name: CMake cache.
-        id: cache-cmake
-        uses: actions/cache@v1
-        with:
-          path: parts/cmake
-          key: ${{ runner.OS }}-cmake-${{ env.CACHE_KEY }}-${{ env.CMAKE_CACHE_KEY }}
-
-      - name: CMake build.
-        if: steps.cache-cmake.outputs.cache-hit != 'true'
-        run: sudo snap run snapcraft build --destructive-mode cmake
-
-      - name: FFmpeg cache.
-        id: cache-ffmpeg
-        uses: actions/cache@v1
-        with:
-          path: parts/ffmpeg
-          key: ${{ runner.OS }}-ffmpeg-${{ env.CACHE_KEY }}-${{ env.FFMPEG_CACHE_KEY }}
-
-      - name: FFmpeg build.
-        if: steps.cache-ffmpeg.outputs.cache-hit != 'true'
-        run: sudo snap run snapcraft build --destructive-mode ffmpeg
+          sudo snap run lxd init --auto
+          sudo snap run lxd waitready
 
       - name: Telegram Desktop snap build.
-        if: env.ONLY_CACHE == 'false'
-        run: sudo snap run snapcraft --destructive-mode
+        run: sg lxd -c 'snap run snapcraft --use-lxd'
 
       - name: Move artifact.
         if: env.UPLOAD_ARTIFACT == 'true'
         run: |
           artifact_name=$(echo telegram-desktop_*.snap)
-          echo ::set-env name=ARTIFACT_NAME::$artifact_name
+          echo "ARTIFACT_NAME=$artifact_name" >> $GITHUB_ENV
 
           mkdir artifact
           mv $artifact_name artifact
@@ -126,8 +88,3 @@ jobs:
         with:
           name: ${{ env.ARTIFACT_NAME }}
           path: artifact
-
-      - name: Remove unneeded directories for cache.
-        run: |
-          sudo rm -rf parts/*/{build,src,ubuntu}
-          sudo rm -rf parts/*/state/{stage,prime}

.github/workflows/user_agent_updater.yml

@@ -0,0 +1,18 @@
+name: User-agent updater.
+
+on:
+  repository_dispatch:
+    types: ["Restart user_agent_updater workflow."]
+  schedule:
+    # At 00:00 on day-of-month 1.
+    - cron: "0 0 1 * *"
+  pull_request_target:
+    types: [closed]
+
+jobs:
+  User-agent:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: desktop-app/action_code_updater@master
+        with:
+          type: "user-agent"

.github/workflows/win.yml

@@ -59,7 +59,8 @@ jobs:
       SDK: "10.0.18362.0"
       VC: "call vcvars32.bat && cd Libraries"
       GIT: "https://github.com"
-      QT: "5_12_8"
+      QT: "5_15_2"
+      QT_VER: "5.15.2"
       OPENSSL_VER: "1_1_1"
       UPLOAD_ARTIFACT: "false"
       ONLY_CACHE: "false"
@@ -67,10 +68,31 @@ jobs:
       DOC_PATH: "docs/building-msvc.md"
       AUTO_CACHING: "1"
 
+    defaults:
+      run:
+        shell: cmd
+
     steps:
       - name: Get repository name.
         shell: bash
-        run: echo ::set-env name=REPO_NAME::${GITHUB_REPOSITORY##*/}
+        run: echo "REPO_NAME=${GITHUB_REPOSITORY##*/}" >> $GITHUB_ENV
+
+      - name: Set up environment paths.
+        shell: bash
+        run: |
+          echo "C:\\Strawberry\\perl\\bin\\" >> $GITHUB_PATH
+          echo "C:\\Program Files\\NASM\\" >> $GITHUB_PATH
+          echo "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\VC\\Auxiliary\\Build\\" >> $GITHUB_PATH
+
+          mkdir Libraries && cd Libraries
+          echo "Convert unix path to win path."
+          p=`pwd | sed 's#^/[d]#d:#g' |sed 's#/#\\\\#g'`
+          echo "LibrariesPath=$p" >> $GITHUB_ENV
+
+      - name: Save msbuild version.
+        run: |
+          call vcvars32.bat
+          msbuild -version > CACHE_KEY.txt
 
       - name: Clone.
         uses: actions/checkout@v2
@@ -78,38 +100,25 @@ jobs:
           submodules: recursive
           path: ${{ env.REPO_NAME }}
 
-      - name: Set up environment variables.
-        shell: cmd
-        run: |
-          echo ::add-path::C:\Strawberry\perl\bin\
-          echo ::add-path::"%programfiles%\NASM"
-
-          C:
-          cd "%programfiles(x86)%\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\"
-          echo ::add-path::%cd%
-
-          call vcvars32.bat
-          D:
-          cd %GITHUB_WORKSPACE%
-          msbuild -version > CACHE_KEY.txt
-          echo %MANUAL_CACHING% >> CACHE_KEY.txt
-
-          mkdir Libraries
-          cd Libraries
-          echo ::set-env name=LibrariesPath::%cd%
-
       - name: Generate cache key.
         shell: bash
         run: |
+          curl -o $LibrariesPath/tg_owt-version.json https://api.github.com/repos/desktop-app/tg_owt/git/refs/heads/master
+          curl -o $LibrariesPath/tg_angle-version.json https://api.github.com/repos/desktop-app/tg_angle/git/refs/heads/master
+          echo $MANUAL_CACHING >> CACHE_KEY.txt
           if [ "$AUTO_CACHING" == "1" ]; then
             thisFile=$REPO_NAME/.github/workflows/win.yml
             echo `md5sum $thisFile | awk '{ print $1 }'` >> CACHE_KEY.txt
           fi
-          echo ::set-env name=CACHE_KEY::`md5sum CACHE_KEY.txt | awk '{ print $1 }'`
+          echo "CACHE_KEY=`md5sum CACHE_KEY.txt | awk '{ print $1 }'`" >> $GITHUB_ENV
 
       - name: Choco installs.
+        run: choco install --no-progress -y nasm yasm jom ninja
+
+      - name: NuGet sources.
         run: |
-          choco install --no-progress -y nasm yasm jom ninja
+          nuget sources Disable -Name "Microsoft Visual Studio Offline Packages"
+          nuget sources Add -Source https://api.nuget.org/v3/index.json & exit 0
 
       - name: Patches.
         shell: bash
@@ -121,8 +130,19 @@ jobs:
           cd Patches
           eval $checkoutCommit
 
+      - name: Find any version of Python 2.
+        shell: bash
+        run: |
+          echo "Find any version of Python 2."
+          p=`ls /c/hostedtoolcache/windows/python | grep "^2" | tail -1`
+          if [ -z "$p" ]; then
+            echo "Python 2 is not found."
+            exit 1
+          fi
+          echo "PY2=C:\\hostedtoolcache\\windows\\Python\\$p\\x64" >> $GITHUB_ENV
+          echo "Found $p."
+
       - name: LZMA.
-        shell: cmd
         run: |
           %VC%
 
@@ -133,20 +153,19 @@ jobs:
 
       - name: OpenSSL cache.
         id: cache-openssl
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/openssl_${{ env.OPENSSL_VER }}
           key: ${{ runner.OS }}-${{ env.CACHE_KEY }}-${{ env.OPENSSL_VER }}
       - name: OpenSSL.
         if: steps.cache-openssl.outputs.cache-hit != 'true'
-        shell: cmd
         run: |
           %VC%
 
           git clone %GIT%/openssl/openssl.git openssl_%OPENSSL_VER%
           cd openssl_%OPENSSL_VER%
           git checkout OpenSSL_%OPENSSL_VER%-stable
-          perl Configure no-shared debug-VC-WIN32
+          perl Configure no-shared no-tests debug-VC-WIN32
           nmake
           mkdir out32.dbg
           move libcrypto.lib out32.dbg
@@ -154,7 +173,7 @@ jobs:
           move ossl_static.pdb out32.dbg\ossl_static
           nmake clean
           move out32.dbg\ossl_static out32.dbg\ossl_static.pdb
-          perl Configure no-shared VC-WIN32
+          perl Configure no-shared no-tests VC-WIN32
           nmake
           mkdir out32
           move libcrypto.lib out32
@@ -165,7 +184,6 @@ jobs:
           rmdir /S /Q .git
 
       - name: Zlib.
-        shell: cmd
         run: |
           %VC%
 
@@ -175,33 +193,45 @@ jobs:
           cd contrib\vstudio\vc14
           msbuild -m zlibstat.vcxproj /property:Configuration=Debug
 
+      - name: MozJPEG.
+        shell: cmd
+        run: |
+          %VC%
+
+          git clone -b v4.0.1-rc2 %GIT%/mozilla/mozjpeg.git
+          cd mozjpeg
+          cmake . ^
+          -G "Visual Studio 16 2019" ^
+          -A Win32 ^
+          -DWITH_JPEG8=ON ^
+          -DPNG_SUPPORTED=OFF
+          cmake --build . --config Debug
+
       - name: OpenAL Soft cache.
         id: cache-openal
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/openal-soft
           key: ${{ runner.OS }}-openal-soft-${{ env.CACHE_KEY }}
       - name: OpenAL Soft.
-        shell: cmd
         if: steps.cache-openal.outputs.cache-hit != 'true'
         run: |
           %VC%
 
-          git clone %GIT%/telegramdesktop/openal-soft.git
-          cd openal-soft
-          git checkout fix_capture
-          cd build
-          cmake ^
+          git clone -b openal-soft-1.21.0 --depth=1 %GIT%/kcat/openal-soft.git
+          cd openal-soft\build
+          cmake .. ^
           -G "Visual Studio 16 2019" ^
           -A Win32 ^
           -D LIBTYPE:STRING=STATIC ^
-          -D FORCE_STATIC_VCRT:STRING=ON ..
+          -D FORCE_STATIC_VCRT=ON ^
+          -D ALSOFT_BACKEND_DSOUND=OFF
 
           msbuild -m OpenAL.vcxproj /property:Configuration=Debug
 
       - name: Breakpad cache.
         id: cache-breakpad
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/breakpad
           key: ${{ runner.OS }}-breakpad-${{ env.CACHE_KEY }}-${{ hashFiles('**/breakpad.diff') }}
@@ -209,21 +239,10 @@ jobs:
         env:
           GYP_MSVS_OVERRIDE_PATH: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\'
           GYP_MSVS_VERSION: 2019
-        shell: cmd
         if: steps.cache-breakpad.outputs.cache-hit != 'true'
         run: |
           cd %LibrariesPath%
 
-          echo Find any version of Python 2.
-          for /D %%a in (C:\hostedtoolcache\windows\Python\2.*) do (
-            SET PY2=%%a\x64
-          )
-          IF [%PY2%] == [] (
-            echo Python 2 is not found.
-            exit 1
-          )
-          echo Found %PY2%.
-
           git clone %GIT%/telegramdesktop/gyp.git
           cd gyp
           SET PATH=%PY2%;%cd%;%PATH%
@@ -250,13 +269,12 @@ jobs:
 
       - name: Opus cache.
         id: cache-opus
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/opus
           key: ${{ runner.OS }}-opus-${{ env.CACHE_KEY }}
       - name: Opus.
         if: steps.cache-opus.outputs.cache-hit != 'true'
-        shell: cmd
         run: |
           %VC%
 
@@ -267,72 +285,126 @@ jobs:
           msbuild -m opus.sln /property:Configuration=Debug /property:Platform="Win32"
           msbuild -m opus.sln /property:Configuration=Release /property:Platform="Win32"
 
+      - name: Rnnoise.
+        shell: cmd
+        run: |
+          %VC%
+
+          git clone %GIT%/desktop-app/rnnoise.git
+          mkdir rnnoise\out
+          cd rnnoise\out
+          cmake -A Win32 ..
+          cmake --build . --config Debug
+
       - name: FFmpeg cache.
         id: cache-ffmpeg
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/ffmpeg
           key: ${{ runner.OS }}-ffmpeg-${{ env.CACHE_KEY }}-2-${{ hashFiles('**/build_ffmpeg_win.sh') }}
       - name: FFmpeg.
         if: steps.cache-ffmpeg.outputs.cache-hit != 'true'
-        shell: cmd
         run: |
           %VC%
           choco install --no-progress -y msys2
 
           git clone %GIT%/FFmpeg/FFmpeg.git ffmpeg
           cd ffmpeg
-          git checkout release/3.4
+          git checkout release/4.4
           set CHERE_INVOKING=enabled_from_arguments
           set MSYS2_PATH_TYPE=inherit
-          call c:\tools\msys64\usr\bin\bash --login ../../%REPO_NAME%/Telegram/Patches/build_ffmpeg_win.sh
+          call c:\tools\msys64\usr\bin\bash --login ../patches/build_ffmpeg_win.sh
 
           rmdir /S /Q .git
 
-      - name: Qt 5.12.8 cache.
-        id: cache-qt
-        uses: actions/cache@v1
+      - name: Angle cache.
+        id: cache-angle
+        uses: actions/cache@v2
         with:
-          path: ${{ env.LibrariesPath }}/Qt-5.12.8
-          key: ${{ runner.OS }}-qt-${{ env.CACHE_KEY }}-${{ hashFiles('**/qtbase_5_12_8.diff') }}
-      - name: Configure Qt 5.12.8.
+          path: ${{ env.LibrariesPath }}/tg_angle
+          key: ${{ runner.OS }}-angle-${{ env.CACHE_KEY }}-${{ hashFiles('**/tg_angle-version.json') }}
+      - name: Angle.
+        if: steps.cache-angle.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+
+          git clone --recursive %GIT%/desktop-app/tg_angle.git
+          mkdir tg_angle\out\Debug
+          cd tg_angle\out\Debug
+          cmake -G Ninja ^
+          -DCMAKE_BUILD_TYPE=Debug ^
+          -DTG_ANGLE_SPECIAL_TARGET=win64 ^
+          -DTG_ANGLE_ZLIB_INCLUDE_PATH=%cd%/../../../zlib ../..
+          ninja
+
+          :: Cleanup.
+          cd %LibrariesPath%\tg_angle
+          move out\Debug\tg_angle.lib tg_angle.lib
+          rmdir /S /Q out
+          mkdir out\Debug
+          move tg_angle.lib out\Debug\tg_angle.lib
+
+      - name: Qt 5.15.2 cache.
+        id: cache-qt
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/Qt-${{ env.QT_VER }}
+          key: ${{ runner.OS }}-qt-${{ env.CACHE_KEY }}-${{ hashFiles('**/qtbase_5_15_2/*') }}
+      - name: Configure Qt 5.15.2.
         if: steps.cache-qt.outputs.cache-hit != 'true'
-        shell: cmd
         run: |
           %VC%
 
           git clone git://code.qt.io/qt/qt5.git qt_%QT%
           cd qt_%QT%
           perl init-repository --module-subset=qtbase,qtimageformats
-          git checkout v5.12.8
+          git checkout v%QT_VER%
           git submodule update qtbase
           git submodule update qtimageformats
           cd qtbase
-          git apply ../../patches/qtbase_%QT%.diff
+          for /r %%i in (..\..\patches\qtbase_%QT%\*) do git apply %%i
           cd ..
 
-          SET SSL=%LibrariesPath%\openssl_1_1_1
-          SET LIBS=libcrypto.lib Ws2_32.lib Gdi32.lib Advapi32.lib Crypt32.lib User32.lib
+          SET SSL=%LibrariesPath%\openssl_%OPENSSL_VER%
+          SET SSL_LIBS=libcrypto.lib Ws2_32.lib Gdi32.lib Advapi32.lib Crypt32.lib User32.lib
+
+          SET ANGLE=%LibrariesPath%\tg_angle
+          SET ANGLE_LIBS=d3d9.lib dxgi.lib dxguid.lib
+
+          SET ZLIB=%LibrariesPath%\zlib\contrib\vstudio\vc14\x86
 
           configure ^
-          -prefix "%LibrariesPath%\Qt-5.12.8" ^
+          -prefix "%LibrariesPath%\Qt-%QT_VER%" ^
           -debug ^
           -force-debug-info ^
           -opensource ^
           -confirm-license ^
           -static ^
-          -static-runtime -I "%SSL%\include" ^
-          -no-opengl ^
+          -static-runtime ^
+          -opengl es2 -no-angle ^
+          -I "%ANGLE%\include" ^
+          -D "GL_APICALL=" ^
+          QMAKE_LIBS_OPENGL_ES2_DEBUG="%ANGLE%\out\Debug\tg_angle.lib %ZLIB%\ZlibStatDebug\zlibstat.lib %ANGLE_LIBS%" ^
+          QMAKE_LIBS_OPENGL_ES2_RELEASE="%ANGLE%\out\Release\tg_angle.lib %ZLIB%\ZlibStatReleaseWithoutAsm\zlibstat.lib %ANGLE_LIBS%" ^
+          -egl ^
+          -D "EGLAPI=" ^
+          -D "DESKTOP_APP_QT_STATIC_ANGLE=" ^
+          QMAKE_LIBS_EGL_DEBUG="%ANGLE%\out\Debug\tg_angle.lib %ZLIB%\ZlibStatDebug\zlibstat.lib %ANGLE_LIBS% Gdi32.lib User32.lib" ^
+          QMAKE_LIBS_EGL_RELEASE="%ANGLE%\out\Release\tg_angle.lib %ZLIB%\ZlibStatReleaseWithoutAsm\zlibstat.lib %ANGLE_LIBS% Gdi32.lib User32.lib" ^
           -openssl-linked ^
-          OPENSSL_LIBS_DEBUG="%SSL%\out32.dbg\libssl.lib %SSL%\out32.dbg\%LIBS%" ^
-          OPENSSL_LIBS_RELEASE="%SSL%\out32\libssl.lib %SSL%\out32\%LIBS%" ^
+          -I "%SSL%\include" ^
+          OPENSSL_LIBS_DEBUG="%SSL%\out32.dbg\libssl.lib %SSL%\out32.dbg\%SSL_LIBS%" ^
+          OPENSSL_LIBS_RELEASE="%SSL%\out32\libssl.lib %SSL%\out32\%SSL_LIBS%" ^
+          -I "%LibrariesPath%\mozjpeg" ^
+          LIBJPEG_LIBS_DEBUG="%LibrariesPath%\mozjpeg\Debug\jpeg-static.lib" ^
+          LIBJPEG_LIBS_RELEASE="%LibrariesPath%\mozjpeg\Release\jpeg-static.lib" ^
           -mp ^
           -nomake examples ^
           -nomake tests ^
           -platform win32-msvc
-      - name: Qt 5.12.8 build.
+
+      - name: Qt 5.15.2 build.
         if: steps.cache-qt.outputs.cache-hit != 'true'
-        shell: cmd
         run: |
           %VC%
           cd qt_%QT%
@@ -343,6 +415,39 @@ jobs:
           cd ..
           rmdir /S /Q qt_%QT%
 
+      - name: WebRTC cache.
+        id: cache-webrtc
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.LibrariesPath }}/tg_owt
+          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}-${{ hashFiles('**/tg_owt-version.json') }}
+      - name: WebRTC.
+        if: steps.cache-webrtc.outputs.cache-hit != 'true'
+        run: |
+          %VC%
+
+          git clone --recursive %GIT%/desktop-app/tg_owt.git
+          mkdir tg_owt\out\Debug
+          cd tg_owt\out\Debug
+          cmake -G Ninja ^
+          -DCMAKE_BUILD_TYPE=Debug ^
+          -DTG_OWT_SPECIAL_TARGET=win ^
+          -DTG_OWT_BUILD_AUDIO_BACKENDS=OFF ^
+          -DTG_OWT_LIBJPEG_INCLUDE_PATH=%cd%/../../../mozjpeg ^
+          -DTG_OWT_OPENSSL_INCLUDE_PATH=%cd%/../../../openssl_%OPENSSL_VER%/include ^
+          -DTG_OWT_OPUS_INCLUDE_PATH=%cd%/../../../opus/include ^
+          -DTG_OWT_FFMPEG_INCLUDE_PATH=%cd%/../../../ffmpeg ^
+          ../..
+
+          ninja
+
+          :: Cleanup.
+          cd %LibrariesPath%\tg_owt
+          move out\Debug\tg_owt.lib tg_owt.lib
+          rmdir /S /Q out
+          mkdir out\Debug
+          move tg_owt.lib out\Debug\tg_owt.lib
+
       - name: Read defines.
         shell: bash
         run: |
@@ -350,21 +455,25 @@ jobs:
           if [ -n "${{ matrix.defines }}" ]; then
             DEFINE="-D ${{ matrix.defines }}=ON"
             echo Define from matrix: $DEFINE
-            echo ::set-env name=ARTIFACT_NAME::Telegram_${{ matrix.defines }}
+            echo "ARTIFACT_NAME=Telegram_${{ matrix.defines }}" >> $GITHUB_ENV
           else
-            echo ::set-env name=ARTIFACT_NAME::Telegram
+            echo "ARTIFACT_NAME=Telegram" >> $GITHUB_ENV
           fi
-          echo "::set-env name=TDESKTOP_BUILD_DEFINE::$DEFINE"
+          echo "TDESKTOP_BUILD_DEFINE=$DEFINE" >> $GITHUB_ENV
+
+      - name: Free up some disk space.
+        run: del /S *.pdb
 
       - name: Telegram Desktop build.
         if: env.ONLY_CACHE == 'false'
-        shell: cmd
         run: |
           cd %REPO_NAME%\Telegram
 
           call configure.bat ^
           -D TDESKTOP_API_TEST=ON ^
           -D DESKTOP_APP_USE_PACKAGED=OFF ^
+          -D DESKTOP_APP_DISABLE_CRASH_REPORTS=OFF ^
+          -D DESKTOP_APP_NO_PDB=ON ^
           %TDESKTOP_BUILD_DEFINE% ^
           -DCMAKE_SYSTEM_VERSION=%SDK%
 
@@ -374,12 +483,10 @@ jobs:
 
       - name: Move artifact.
         if: env.UPLOAD_ARTIFACT == 'true'
-        shell: cmd
         run: |
           cd %REPO_NAME%\out\Debug
           mkdir artifact
           move Telegram.exe artifact/
-          move Updater.exe artifact/
       - uses: actions/upload-artifact@master
         name: Upload artifact.
         if: env.UPLOAD_ARTIFACT == 'true'

.gitignore

@@ -48,3 +48,5 @@ stage
 /Linux/
 /Telegram/Makefile
 *.*~
+.idea/
+cmake-build-debug/

.gitmodules

@@ -1,9 +1,6 @@
 [submodule "Telegram/ThirdParty/libtgvoip"]
 	path = Telegram/ThirdParty/libtgvoip
 	url = https://github.com/telegramdesktop/libtgvoip
-[submodule "Telegram/ThirdParty/variant"]
-	path = Telegram/ThirdParty/variant
-	url = https://github.com/mapbox/variant
 [submodule "Telegram/ThirdParty/GSL"]
 	path = Telegram/ThirdParty/GSL
 	url = https://github.com/Microsoft/GSL.git
@@ -67,9 +64,6 @@
 [submodule "Telegram/ThirdParty/hunspell"]
 	path = Telegram/ThirdParty/hunspell
 	url = https://github.com/hunspell/hunspell
-[submodule "Telegram/ThirdParty/materialdecoration"]
-	path = Telegram/ThirdParty/materialdecoration
-	url = https://github.com/desktop-app/materialdecoration.git
 [submodule "Telegram/ThirdParty/range-v3"]
 	path = Telegram/ThirdParty/range-v3
 	url = https://github.com/ericniebler/range-v3.git
@@ -82,15 +76,18 @@
 [submodule "Telegram/ThirdParty/hime"]
 	path = Telegram/ThirdParty/hime
 	url = https://github.com/hime-ime/hime.git
-[submodule "Telegram/ThirdParty/qt5ct"]
-	path = Telegram/ThirdParty/qt5ct
-	url = https://github.com/desktop-app/qt5ct.git
-[submodule "Telegram/ThirdParty/lxqt-qtplugin"]
-	path = Telegram/ThirdParty/lxqt-qtplugin
-	url = https://github.com/lxqt/lxqt-qtplugin.git
-[submodule "Telegram/ThirdParty/libqtxdg"]
-	path = Telegram/ThirdParty/libqtxdg
-	url = https://github.com/lxqt/libqtxdg.git
 [submodule "Telegram/ThirdParty/fcitx5-qt"]
 	path = Telegram/ThirdParty/fcitx5-qt
 	url = https://github.com/fcitx/fcitx5-qt.git
+[submodule "Telegram/lib_webrtc"]
+	path = Telegram/lib_webrtc
+	url = https://github.com/desktop-app/lib_webrtc.git
+[submodule "Telegram/ThirdParty/tgcalls"]
+	path = Telegram/ThirdParty/tgcalls
+	url = https://github.com/TelegramMessenger/tgcalls.git
+[submodule "Telegram/lib_webview"]
+	path = Telegram/lib_webview
+	url = https://github.com/desktop-app/lib_webview.git
+[submodule "Telegram/lib_waylandshells"]
+	path = Telegram/lib_waylandshells
+	url = https://github.com/desktop-app/lib_waylandshells.git

CMakeLists.txt

@@ -31,10 +31,15 @@ include(cmake/target_link_static_libraries.cmake)
 include(cmake/target_link_frameworks.cmake)
 include(cmake/init_target.cmake)
 include(cmake/generate_target.cmake)
+include(cmake/nuget.cmake)
 
 include(cmake/options.cmake)
 
 include(cmake/external/qt/package.cmake)
 
+set(desktop_app_skip_libs
+    variant
+)
+
 add_subdirectory(cmake)
 add_subdirectory(Telegram)

LEGAL

@@ -1,7 +1,7 @@
 This file is part of Telegram Desktop,
 the official desktop application for the Telegram messaging service.
 
-Copyright (c) 2014-2020 The Telegram Desktop Authors.
+Copyright (c) 2014-2021 The Telegram Desktop Authors.
 
 Telegram Desktop is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

README.md

@@ -15,15 +15,20 @@ The source code is published under GPLv3 with OpenSSL exception, the license is
 
 The latest version is available for
 
-* [Windows 7 and above](https://telegram.org/dl/desktop/win) ([portable](https://telegram.org/dl/desktop/win_portable))
+* [Windows 7 and above (64 bit)](https://telegram.org/dl/desktop/win64) ([portable](https://telegram.org/dl/desktop/win64_portable))
+* [Windows 7 and above (32 bit)](https://telegram.org/dl/desktop/win) ([portable](https://telegram.org/dl/desktop/win_portable))
 * [macOS 10.12 and above](https://telegram.org/dl/desktop/mac)
-* [OS X 10.10 and 10.11](https://telegram.org/dl/desktop/osx)
-* [Linux static build for 64 bit](https://telegram.org/dl/desktop/linux) ([32 bit](https://telegram.org/dl/desktop/linux32))
+* [Linux static build for 64 bit](https://telegram.org/dl/desktop/linux)
 * [Snap](https://snapcraft.io/telegram-desktop)
 * [Flatpak](https://flathub.org/apps/details/org.telegram.desktop)
 
 ## Old system versions
 
+Version **2.4.4** was the last that supports older systems
+
+* [OS X 10.10 and 10.11](https://updates.tdesktop.com/tosx/tsetup-osx.2.4.4.dmg)
+* [Linux static build for 32 bit](https://updates.tdesktop.com/tlinux32/tsetup32.2.4.4.tar.xz)
+
 Version **1.8.15** was the last that supports older systems
 
 * [Windows XP and Vista](https://updates.tdesktop.com/tsetup/tsetup.1.8.15.exe) ([portable](https://updates.tdesktop.com/tsetup/tportable.1.8.15.zip))
@@ -32,8 +37,9 @@ Version **1.8.15** was the last that supports older systems
 
 ## Third-party
 
-* Qt 5.12.8, 5.6.2 and 5.3.2 slightly patched ([LGPL](http://doc.qt.io/qt-5/lgpl.html))
+* Qt 5.15.2, 5.6.2 and 5.3.2 slightly patched ([LGPL](http://doc.qt.io/qt-5/lgpl.html))
 * OpenSSL 1.1.1 and 1.0.1 ([OpenSSL License](https://www.openssl.org/source/license.html))
+* WebRTC ([New BSD License](https://github.com/desktop-app/tg_owt/blob/master/LICENSE))
 * zlib 1.2.11 ([zlib License](http://www.zlib.net/zlib_license.html))
 * LZMA SDK 9.20 ([public domain](http://www.7-zip.org/sdk.html))
 * liblzma ([public domain](http://tukaani.org/xz/))
@@ -45,21 +51,20 @@ Version **1.8.15** was the last that supports older systems
 * Opus codec ([BSD License](http://www.opus-codec.org/license/))
 * FFmpeg ([LGPL](https://www.ffmpeg.org/legal.html))
 * Guideline Support Library ([MIT License](https://github.com/Microsoft/GSL/blob/master/LICENSE))
-* Mapbox Variant ([BSD License](https://github.com/mapbox/variant/blob/master/LICENSE))
 * Range-v3 ([Boost License](https://github.com/ericniebler/range-v3/blob/master/LICENSE.txt))
 * Open Sans font ([Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0.html))
-* Vazir font ([License](https://github.com/rastikerdar/vazir-font/blob/master/LICENSE))
+* Vazir font ([SIL Open Font License 1.1](https://github.com/rastikerdar/vazir-font/blob/master/OFL.txt))
 * Emoji alpha codes ([MIT License](https://github.com/emojione/emojione/blob/master/extras/alpha-codes/LICENSE.md))
 * Catch test framework ([Boost License](https://github.com/philsquared/Catch/blob/master/LICENSE.txt))
 * xxHash ([BSD License](https://github.com/Cyan4973/xxHash/blob/dev/LICENSE))
 * QR Code generator ([MIT License](https://github.com/nayuki/QR-Code-generator#license))
 * CMake ([New BSD License](https://github.com/Kitware/CMake/blob/master/Copyright.txt))
-* Hunspell ([GPL](https://github.com/hunspell/hunspell/blob/master/COPYING))
+* Hunspell ([LGPL](https://github.com/hunspell/hunspell/blob/master/COPYING.LESSER))
 
 ## Build instructions
 
-* [Visual Studio 2019][msvc]
-* [Xcode 11][xcode]
+* Visual Studio 2019 [(32 bits)][msvc32] [(64 bits)][msvc64]
+* [Xcode 12][xcode]
 * [CMake on GNU/Linux][cmake]
 
 [//]: # (LINKS)
@@ -68,7 +73,8 @@ Version **1.8.15** was the last that supports older systems
 [telegram_api]: https://core.telegram.org
 [telegram_proto]: https://core.telegram.org/mtproto
 [license]: LICENSE
-[msvc]: docs/building-msvc.md
+[msvc32]: docs/building-msvc.md
+[msvc64]: docs/building-msvc-x64.md
 [xcode]: docs/building-xcode.md
 [xcode_old]: docs/building-xcode-old.md
 [cmake]: docs/building-cmake.md

Telegram/Patches/build_ffmpeg_win.sh

@@ -13,6 +13,8 @@ pacman --noconfirm -S pkg-config
 PKG_CONFIG_PATH="/mingw64/lib/pkgconfig:$PKG_CONFIG_PATH"
 
 ./configure --toolchain=msvc \
+--extra-cflags="-DCONFIG_SAFE_BITSTREAM_READER=1" \
+--extra-cxxflags="-DCONFIG_SAFE_BITSTREAM_READER=1" \
 --extra-ldflags="-libpath:$FullExecPath/../opus/win32/VS2015/Win32/Release" \
 --disable-programs \
 --disable-doc \

Telegram/Patches/ffmpeg.diff

@@ -1,225 +0,0 @@
-diff --git a/libavcodec/aarch64/Makefile b/libavcodec/aarch64/Makefile
-index 00f93bf59f..52da7036f3 100644
---- a/libavcodec/aarch64/Makefile
-+++ b/libavcodec/aarch64/Makefile
-@@ -6,6 +6,7 @@ OBJS-$(CONFIG_H264DSP)                  += aarch64/h264dsp_init_aarch64.o
- OBJS-$(CONFIG_H264PRED)                 += aarch64/h264pred_init.o
- OBJS-$(CONFIG_H264QPEL)                 += aarch64/h264qpel_init_aarch64.o
- OBJS-$(CONFIG_HPELDSP)                  += aarch64/hpeldsp_init_aarch64.o
-+OBJS-$(CONFIG_IDCTDSP)                  += aarch64/idctdsp_init_aarch64.o
- OBJS-$(CONFIG_MPEGAUDIODSP)             += aarch64/mpegaudiodsp_init.o
- OBJS-$(CONFIG_NEON_CLOBBER_TEST)        += aarch64/neontest.o
- OBJS-$(CONFIG_VIDEODSP)                 += aarch64/videodsp_init.o
-@@ -21,6 +22,7 @@ OBJS-$(CONFIG_VC1DSP)                   += aarch64/vc1dsp_init_aarch64.o
- OBJS-$(CONFIG_VORBIS_DECODER)           += aarch64/vorbisdsp_init.o
- OBJS-$(CONFIG_VP9_DECODER)              += aarch64/vp9dsp_init_10bpp_aarch64.o \
-                                            aarch64/vp9dsp_init_12bpp_aarch64.o \
-+                                           aarch64/vp9mc_aarch64.o             \
-                                            aarch64/vp9dsp_init_aarch64.o
- 
- # ARMv8 optimizations
-@@ -41,8 +43,7 @@ NEON-OBJS-$(CONFIG_H264PRED)            += aarch64/h264pred_neon.o
- NEON-OBJS-$(CONFIG_H264QPEL)            += aarch64/h264qpel_neon.o             \
-                                            aarch64/hpeldsp_neon.o
- NEON-OBJS-$(CONFIG_HPELDSP)             += aarch64/hpeldsp_neon.o
--NEON-OBJS-$(CONFIG_IDCTDSP)             += aarch64/idctdsp_init_aarch64.o      \
--                                           aarch64/simple_idct_neon.o
-+NEON-OBJS-$(CONFIG_IDCTDSP)             += aarch64/simple_idct_neon.o
- NEON-OBJS-$(CONFIG_MDCT)                += aarch64/mdct_neon.o
- NEON-OBJS-$(CONFIG_MPEGAUDIODSP)        += aarch64/mpegaudiodsp_neon.o
- NEON-OBJS-$(CONFIG_VP8DSP)              += aarch64/vp8dsp_neon.o
-diff --git a/libavcodec/aarch64/idctdsp_init_aarch64.c b/libavcodec/aarch64/idctdsp_init_aarch64.c
-index 0406e60830..742a3372e3 100644
---- a/libavcodec/aarch64/idctdsp_init_aarch64.c
-+++ b/libavcodec/aarch64/idctdsp_init_aarch64.c
-@@ -21,6 +21,8 @@
-  */
- 
- #include "libavutil/attributes.h"
-+#include "libavutil/cpu.h"
-+#include "libavutil/arm/cpu.h"
- #include "libavcodec/avcodec.h"
- #include "libavcodec/idctdsp.h"
- #include "idct.h"
-@@ -28,7 +30,9 @@
- av_cold void ff_idctdsp_init_aarch64(IDCTDSPContext *c, AVCodecContext *avctx,
-                                      unsigned high_bit_depth)
- {
--    if (!avctx->lowres && !high_bit_depth) {
-+    int cpu_flags = av_get_cpu_flags();
-+
-+    if (have_neon(cpu_flags) && !avctx->lowres && !high_bit_depth) {
-         if (avctx->idct_algo == FF_IDCT_AUTO ||
-             avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
-             avctx->idct_algo == FF_IDCT_SIMPLENEON) {
-diff --git a/libavcodec/aarch64/vp9mc_16bpp_neon.S b/libavcodec/aarch64/vp9mc_16bpp_neon.S
-index cac6428709..53b372c262 100644
---- a/libavcodec/aarch64/vp9mc_16bpp_neon.S
-+++ b/libavcodec/aarch64/vp9mc_16bpp_neon.S
-@@ -25,31 +25,6 @@
- //                            const uint8_t *ref, ptrdiff_t ref_stride,
- //                            int h, int mx, int my);
- 
--function ff_vp9_copy128_aarch64, export=1
--1:
--        ldp             x5,  x6,  [x2]
--        ldp             x7,  x8,  [x2, #16]
--        stp             x5,  x6,  [x0]
--        ldp             x9,  x10, [x2, #32]
--        stp             x7,  x8,  [x0, #16]
--        subs            w4,  w4,  #1
--        ldp             x11, x12, [x2, #48]
--        stp             x9,  x10, [x0, #32]
--        stp             x11, x12, [x0, #48]
--        ldp             x5,  x6,  [x2, #64]
--        ldp             x7,  x8,  [x2, #80]
--        stp             x5,  x6,  [x0, #64]
--        ldp             x9,  x10, [x2, #96]
--        stp             x7,  x8,  [x0, #80]
--        ldp             x11, x12, [x2, #112]
--        stp             x9,  x10, [x0, #96]
--        stp             x11, x12, [x0, #112]
--        add             x2,  x2,  x3
--        add             x0,  x0,  x1
--        b.ne            1b
--        ret
--endfunc
--
- function ff_vp9_avg64_16_neon, export=1
-         mov             x5,  x0
-         sub             x1,  x1,  #64
-diff --git a/libavcodec/aarch64/vp9mc_aarch64.S b/libavcodec/aarch64/vp9mc_aarch64.S
-new file mode 100644
-index 0000000000..f17a8cf04a
---- /dev/null
-+++ b/libavcodec/aarch64/vp9mc_aarch64.S
-@@ -0,0 +1,81 @@
-+/*
-+ * Copyright (c) 2016 Google Inc.
-+ *
-+ * This file is part of FFmpeg.
-+ *
-+ * FFmpeg is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU Lesser General Public
-+ * License as published by the Free Software Foundation; either
-+ * version 2.1 of the License, or (at your option) any later version.
-+ *
-+ * FFmpeg is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * Lesser General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU Lesser General Public
-+ * License along with FFmpeg; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-+ */
-+
-+#include "libavutil/aarch64/asm.S"
-+
-+// All public functions in this file have the following signature:
-+// typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
-+//                            const uint8_t *ref, ptrdiff_t ref_stride,
-+//                            int h, int mx, int my);
-+
-+function ff_vp9_copy128_aarch64, export=1
-+1:
-+        ldp             x5,  x6,  [x2]
-+        ldp             x7,  x8,  [x2, #16]
-+        stp             x5,  x6,  [x0]
-+        ldp             x9,  x10, [x2, #32]
-+        stp             x7,  x8,  [x0, #16]
-+        subs            w4,  w4,  #1
-+        ldp             x11, x12, [x2, #48]
-+        stp             x9,  x10, [x0, #32]
-+        stp             x11, x12, [x0, #48]
-+        ldp             x5,  x6,  [x2, #64]
-+        ldp             x7,  x8,  [x2, #80]
-+        stp             x5,  x6,  [x0, #64]
-+        ldp             x9,  x10, [x2, #96]
-+        stp             x7,  x8,  [x0, #80]
-+        ldp             x11, x12, [x2, #112]
-+        stp             x9,  x10, [x0, #96]
-+        stp             x11, x12, [x0, #112]
-+        add             x2,  x2,  x3
-+        add             x0,  x0,  x1
-+        b.ne            1b
-+        ret
-+endfunc
-+
-+function ff_vp9_copy64_aarch64, export=1
-+1:
-+        ldp             x5,  x6,  [x2]
-+        ldp             x7,  x8,  [x2, #16]
-+        stp             x5,  x6,  [x0]
-+        ldp             x9,  x10, [x2, #32]
-+        stp             x7,  x8,  [x0, #16]
-+        subs            w4,  w4,  #1
-+        ldp             x11, x12, [x2, #48]
-+        stp             x9,  x10, [x0, #32]
-+        stp             x11, x12, [x0, #48]
-+        add             x2,  x2,  x3
-+        add             x0,  x0,  x1
-+        b.ne            1b
-+        ret
-+endfunc
-+
-+function ff_vp9_copy32_aarch64, export=1
-+1:
-+        ldp             x5,  x6,  [x2]
-+        ldp             x7,  x8,  [x2, #16]
-+        stp             x5,  x6,  [x0]
-+        subs            w4,  w4,  #1
-+        stp             x7,  x8,  [x0, #16]
-+        add             x2,  x2,  x3
-+        add             x0,  x0,  x1
-+        b.ne            1b
-+        ret
-+endfunc
-diff --git a/libavcodec/aarch64/vp9mc_neon.S b/libavcodec/aarch64/vp9mc_neon.S
-index f67624ca04..abf2bae9db 100644
---- a/libavcodec/aarch64/vp9mc_neon.S
-+++ b/libavcodec/aarch64/vp9mc_neon.S
-@@ -25,23 +25,6 @@
- //                            const uint8_t *ref, ptrdiff_t ref_stride,
- //                            int h, int mx, int my);
- 
--function ff_vp9_copy64_aarch64, export=1
--1:
--        ldp             x5,  x6,  [x2]
--        ldp             x7,  x8,  [x2, #16]
--        stp             x5,  x6,  [x0]
--        ldp             x9,  x10, [x2, #32]
--        stp             x7,  x8,  [x0, #16]
--        subs            w4,  w4,  #1
--        ldp             x11, x12, [x2, #48]
--        stp             x9,  x10, [x0, #32]
--        stp             x11, x12, [x0, #48]
--        add             x2,  x2,  x3
--        add             x0,  x0,  x1
--        b.ne            1b
--        ret
--endfunc
--
- function ff_vp9_avg64_neon, export=1
-         mov             x5,  x0
- 1:
-@@ -64,19 +47,6 @@ function ff_vp9_avg64_neon, export=1
-         ret
- endfunc
- 
--function ff_vp9_copy32_aarch64, export=1
--1:
--        ldp             x5,  x6,  [x2]
--        ldp             x7,  x8,  [x2, #16]
--        stp             x5,  x6,  [x0]
--        subs            w4,  w4,  #1
--        stp             x7,  x8,  [x0, #16]
--        add             x2,  x2,  x3
--        add             x0,  x0,  x1
--        b.ne            1b
--        ret
--endfunc
--
- function ff_vp9_avg32_neon, export=1
- 1:
-         ld1             {v2.16b, v3.16b},  [x2], x3