Require GTK 4.6.0 for new plugin

.gitattributes

@@ -0,0 +1,5 @@
+extras/**/* linguist-vendored
+lib/**/* linguist-vendored
+lib/**/**/* linguist-vendored
+lib/gst/clapper/gstclapper-mpris* linguist-vendored=false
+lib/gst/clapper/gtk4/* linguist-vendored=false

.github/workflows/flatpak-nightly.yml

@@ -1,5 +1,4 @@
 on:
-  workflow_dispatch:
   schedule:
     - cron: "0 0 * * *"
 name: "Flatpak Nightly"
@@ -7,7 +6,6 @@ jobs:
   flatpak:
     name: "Flatpak"
     runs-on: ubuntu-latest
-    timeout-minutes: 600
     container:
       image: bilelmoussaoui/flatpak-github-actions:gnome-nightly
       options: --privileged
@@ -16,8 +14,7 @@ jobs:
         arch: [x86_64, aarch64]
       fail-fast: false
     steps:
-    - name: Checkout
-      uses: actions/checkout@v4
+    - uses: actions/checkout@v2
       with:
         submodules: recursive
     - name: Install Docker
@@ -25,15 +22,11 @@ jobs:
         dnf -y install docker
     - name: Setup QEMU
       id: qemu
-      uses: docker/setup-qemu-action@v3
+      uses: docker/setup-qemu-action@v1
       with:
         platforms: arm64
-    - name: Prepare Runtime
-      run: |
-        flatpak --system install -y --noninteractive flathub org.freedesktop.Sdk.Extension.rust-nightly/${{ matrix.arch }}/23.08
-        flatpak --system install -y --noninteractive flathub org.freedesktop.Sdk.Extension.llvm16/${{ matrix.arch }}/23.08
-    - name: Build
-      uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v6
+    - uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v4
+      name: "Build"
       with:
         bundle: com.github.rafostar.Clapper.flatpak
         manifest-path: pkgs/flatpak/com.github.rafostar.Clapper-nightly.json

.github/workflows/flatpak.yml

@@ -1,5 +1,4 @@
 on:
-  workflow_dispatch:
   push:
     branches:
       - master
@@ -11,17 +10,15 @@ jobs:
   flatpak:
     name: "Flatpak"
     runs-on: ubuntu-latest
-    timeout-minutes: 600
     container:
-      image: bilelmoussaoui/flatpak-github-actions:gnome-45
+      image: bilelmoussaoui/flatpak-github-actions:gnome-41
       options: --privileged
     strategy:
       matrix:
         arch: [x86_64, aarch64]
       fail-fast: false
     steps:
-    - name: Checkout
-      uses: actions/checkout@v4
+    - uses: actions/checkout@v2
       with:
         submodules: recursive
     - name: Install Docker
@@ -29,11 +26,11 @@ jobs:
         dnf -y install docker
     - name: Setup QEMU
       id: qemu
-      uses: docker/setup-qemu-action@v3
+      uses: docker/setup-qemu-action@v1
       with:
         platforms: arm64
-    - name: Build
-      uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v6
+    - uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v4
+      name: "Build"
       with:
         bundle: com.github.rafostar.Clapper.flatpak
         manifest-path: pkgs/flatpak/com.github.rafostar.Clapper.json

.gitignore

@@ -2,6 +2,3 @@
 build/
 install/
 builddir/
-
-# flatpak
-.flatpak-builder/

.obs/workflows.yml

@@ -1,10 +0,0 @@
-rebuild_master:
-  steps:
-    - trigger_services:
-        project: home:Rafostar
-        package: clapper
-  filters:
-    event: push
-    branches:
-      only:
-        - master

README.md

@@ -2,56 +2,56 @@
 [![Flatpak](https://github.com/Rafostar/clapper/actions/workflows/flatpak.yml/badge.svg?event=push)](https://github.com/Rafostar/clapper/actions/workflows/flatpak.yml)
 [![Flatpak Nightly](https://github.com/Rafostar/clapper/actions/workflows/flatpak-nightly.yml/badge.svg?event=schedule)](https://github.com/Rafostar/clapper/actions/workflows/flatpak-nightly.yml)
 [![Crowdin](https://badges.crowdin.net/clapper/localized.svg)](https://crowdin.com/project/clapper)
-[![Matrix](https://img.shields.io/matrix/clapper-player:matrix.org?label=matrix)](https://matrix.to/#/#clapper-player:matrix.org)
-[![Donate](https://img.shields.io/liberapay/receives/Clapper.svg?logo=liberapay)](https://liberapay.com/Clapper)
 
-Clapper is a modern media player designed for simplicity and ease of use. Powered by [GStreamer](https://gstreamer.freedesktop.org/) and built for the GNOME
-desktop environment using [GTK4](https://www.gtk.org/) toolkit, it has a clean and stylish interface that lets you focus on enjoying your favorite videos.
-
-This application aim is to offer all the essentials features you'd expect from a video player in a simple form.
+A GNOME media player built using [GJS](https://gitlab.gnome.org/GNOME/gjs) with [GTK4](https://www.gtk.org) toolkit.
+The media player uses [GStreamer](https://gstreamer.freedesktop.org/) as a media backend and renders everything via [OpenGL](https://www.opengl.org).
 
 <p align="center">
-  <img src="https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot_01.png">
+<img src="https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot-windowed.png"><br>
+  <b>Windowed Mode</b>
 </p>
 
-Clapper uses a playback queue where you can add multiple media files. Think of it like a playlist that you can build.
-You can easily reorder items or remove them from the queue with a simple drag and drop operation.
-
 <p align="center">
-  <img src="https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot_03.png">
+<img src="https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot-fullscreen.png"><br>
+  <b>Fullscreen Mode</b>
 </p>
 
-### Components
-Clapper's codebase consists of 2 libraries using which main application is built:
-* [Clapper](https://rafostar.github.io/clapper/doc/clapper/) - a playback library
-* [ClapperGtk](https://rafostar.github.io/clapper/doc/clapper-gtk/) - a GTK integration library
+<p align="center">
+<img src="https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot-floating.png"><br>
+  <b>Floating Mode</b>
+</p>
 
-Both libraries support *GObject Introspection* bindings. A simple application example can be found [here](https://github.com/Rafostar/clapper-vala-test).
-
-Above libraries are licensed under `LGPL-2.1-or-later`. You are free to use them in your own projects as long as you comply with license terms.
-Please note that until version 1.0 they should be considered as an unstable API (some things may change without prior notice).
+### Features:
+* [Hardware acceleration](https://github.com/Rafostar/clapper/wiki/Hardware-acceleration)
+* [Floating mode](https://github.com/Rafostar/clapper/wiki/Floating-mode)
+* [Adaptive UI](https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot-mobile.png)
+* [Playlist from file](https://github.com/Rafostar/clapper/wiki/Playlists)
+* Chapters on progress bar
+* MPRIS support
 
 ## Installation from Flatpak
 The `Flatpak` package includes all required dependencies and codecs.
-Additionally it also has a few patches, thus some functionalities work better in `Flatpak` version (until my changes are accepted upstream).
+Additionally it also has a few patches, thus some functionalities work better (or are only available) in `Flatpak` version (until my changes are accepted upstream).
 List of patches used in this version can be found [here](https://github.com/Rafostar/clapper/issues/35).
 
 <a href='https://flathub.org/apps/details/com.github.rafostar.Clapper'>
   <img width='240' alt='Download on Flathub' src='https://flathub.org/assets/badges/flathub-badge-en.png'/>
 </a>
 
-## Packages in Linux Distributions
-[![Packaging status](https://repology.org/badge/vertical-allrepos/clapper.svg)](https://repology.org/project/clapper/versions)
+## Packages
+#### Fedora & openSUSE
+Pre-built packages are available in [my repo](https://software.opensuse.org//download.html?project=home%3ARafostar&package=clapper) ([see status](https://build.opensuse.org/package/show/home:Rafostar/clapper)).<br>
+Those are automatically built on each git commit, and are thus considered unstable.
 
-Pre-built RPM packages are also available in [my repo](https://software.opensuse.org//download.html?project=home%3ARafostar&package=clapper) ([see status](https://build.opensuse.org/package/show/home:Rafostar/clapper)).<br>
-Those are automatically built on each git commit, thus are considered unstable.
+#### Arch Linux
+You can get Clapper from the AUR:
+* [clapper](https://aur.archlinux.org/packages/clapper) (stable version)
+* [clapper-git](https://aur.archlinux.org/packages/clapper-git)
 
-## Installation from Source Code
+## Installation from source code
 ```sh
-meson setup builddir
-cd builddir
-meson compile
-sudo meson install
+meson builddir --prefix=/usr/local
+sudo meson install -C builddir
 ```
 
 ## Questions?

TODO.md

@@ -0,0 +1,46 @@
+- [X] Implement GstPlayer API
+  - [X] Update to custom GstClapper API
+- [X] Inhibit screen locking
+- [X] Hide cursor on video window
+- Adaptive GUI:
+  - [X] Darker and bigger in fullscreen
+  - [X] Mobile/narrow widths transitions
+  - [ ] Mobile friendly other windows e.g. prefs window (libadwaita)
+- [X] Dragging player by video (MPV)
+- [X] Switching video/audio/subtitles tracks from bottom bar (MPV)
+- [X] Over-amplification supported by default (VLC)
+- [X] Audio visualizations (VLC)
+- [X] Clock with current hour and "Ends at" time on top overlay (Kodi)
+- [ ] Auto select subtitles matching OS language (Totem)
+- [X] Picture-in-Picture mode window (floating window)
+- [ ] Touch gestures/swipes support
+- Media playlists:
+  - [X] Add more items to playlist via D&D
+  - [X] Select video from playlist
+  - [ ] Reorder playlist items via D&D
+  - [X] Load special playlist file (.claps)
+  - [X] Save to playlist file from GUI
+- Seeking:
+  - [X] Customizable seek time
+  - [X] Set seek mode (default, accurate, fast)
+- [ ] Statistics and codec info page (VLC)
+- [X] Resume playback from last position
+- [X] Chapters support
+- [ ] Set tracks time offset
+  - [ ] Subtitles offset
+  - [X] Audio offset
+- [ ] MDNS and UPNP (discovering media in local network)
+- [X] DND files from Nautilus to play (ignore incompatible ones)
+  - [X] Support dropping whole folders
+- [ ] Search for subtitles, download and activate (SMplayer)
+- [ ] Auto add subtitles from same folder
+  - [ ] Set global subtitles folders
+- [X] RSTP streaming
+- [X] Playback speed
+- [X] Remote playback controls via HTTP (VLC) + WebSockets
+  - [ ] Expand available API
+  - [ ] API documentation
+- [X] Integration with the top bar
+  - [X] MPRIS support
+  - [X] Controls in the notifications panel
+  - [ ] Progress bar in the notifications panel (maybe via extension)

_service

@@ -0,0 +1,14 @@
+<services>
+  <service name="obs_scm">
+    <param name="scm">git</param>
+    <param name="url">https://github.com/Rafostar/clapper.git</param>
+    <param name="extract">pkgs/rpm/clapper.spec</param>
+    <param name="extract">pkgs/rpm/clapper.rpmlintrc</param>
+  </service>
+  <service name="tar" mode="buildtime"/>
+  <service name="recompress" mode="buildtime">
+    <param name="compression">xz</param>
+    <param name="file">*.tar</param>
+  </service>
+  <service name="set_version" mode="buildtime"/>
+</services>

bin/com.github.rafostar.Clapper.in

@@ -0,0 +1,9 @@
+#!@GJS@
+
+imports.package.init({
+  name: '@PACKAGE_NAME@',
+  version: '@PACKAGE_VERSION@',
+  prefix: '@prefix@',
+  libdir: '@libdir@',
+});
+imports.package.run(imports.src.main);

bin/meson.build

@@ -0,0 +1,22 @@
+bin_conf = configuration_data()
+
+bin_conf.set('GJS', find_program('gjs').path())
+bin_conf.set('PACKAGE_NAME', meson.project_name())
+bin_conf.set('PACKAGE_VERSION', meson.project_version())
+bin_conf.set('prefix', get_option('prefix'))
+bin_conf.set('libdir', libdir)
+
+configure_file(
+  input: 'com.github.rafostar.Clapper.in',
+  output: 'com.github.rafostar.Clapper',
+  configuration: bin_conf,
+  install: true,
+  install_dir: bindir,
+  install_mode: 'rwxr-xr-x'
+)
+
+clapper_symlink_cmd = 'ln -fs @0@ $DESTDIR@1@'.format(
+  'com.github.rafostar.Clapper',
+  join_paths(bindir, 'clapper')
+)
+meson.add_install_script('sh', '-c', clapper_symlink_cmd)

build-aux/meson/postinstall.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+
+from os import environ, path
+from subprocess import call
+
+prefix = environ.get('MESON_INSTALL_PREFIX', '/usr/local')
+sharedir = path.join(prefix, 'share')
+destdir = environ.get('DESTDIR', '')
+
+# Package managers set this so we don't need to run
+if not destdir:
+    print('Updating icon cache...')
+    call(['gtk4-update-icon-cache', '-qtf', path.join(sharedir, 'icons', 'hicolor')])
+
+    print('Updating mime database...')
+    call(['update-mime-database', path.join(sharedir, 'mime')])
+
+    print('Updating desktop database...')
+    call(['update-desktop-database', '-q', path.join(sharedir, 'applications')])
+
+    print('Compiling GSettings schemas...')
+    call(['glib-compile-schemas', path.join(sharedir, 'glib-2.0', 'schemas')])

crowdin.yml

@@ -1,5 +1,3 @@
 files:
-  - source: /src/lib/clapper-gtk/po/clapper-gtk.pot
-    translation: /src/lib/clapper-gtk/po/%osx_locale%.po
-  - source: /src/bin/clapper-app/po/clapper-app.pot
-    translation: /src/bin/clapper-app/po/%osx_locale%.po
+  - source: /po/com.github.rafostar.Clapper.pot
+    translation: /po/%osx_locale%.po

css/styles.css

@@ -0,0 +1,387 @@
+/* Defaults */
+scale marks {
+  color: currentColor;
+}
+radio {
+  margin-left: -2px;
+}
+scrolledwindow scrollbar.vertical slider {
+  min-height: 16px;
+}
+
+/* Adwaita is missing osd ListBox */
+.clapperplaylist {
+  background: none;
+}
+.clapperplaylist row {
+  border-radius: 5px;
+}
+.clapperplaylist row {
+  color: @theme_fg_color;
+}
+.clapperplaylist row button {
+  margin: 0px;
+  padding: 0px;
+  min-width: 28px;
+  min-height: 28px;
+}
+.fullscreen.tvmode .clapperplaylist row button {
+  min-width: 36px;
+  min-height: 36px;
+  margin-left: 2px;
+  margin-right: 2px;
+}
+.osd .clapperplaylist row image {
+  -gtk-icon-shadow: none;
+}
+.osdheaderbar {
+  background: transparent;
+}
+.osdheaderbar button {
+  border: transparent;
+}
+.linkseparator {
+  background: rgba(24,24,24,0.72);
+  min-width: 1px;
+}
+.linkedleft image {
+  margin-left: 2px;
+}
+.linkedright image {
+  margin-right: 2px;
+}
+
+/* Flat popovers */
+popover arrow,
+popover contents {
+  border-color: transparent;
+  box-shadow: none;
+}
+.popoverseparator separator {
+  background-color: @insensitive_fg_color;
+}
+
+/* Rounded corners */
+.adwrounded.csd {
+  border-radius: 8px;
+}
+.adwrounded.fullscreen,
+.adwrounded.maximized,
+.adwrounded.tiled,
+.adwrounded.tiled-top,
+.adwrounded.tiled-left,
+.adwrounded.tiled-right,
+.adwrounded.tiled-bottom {
+  border-radius: 0px;
+}
+.roundedcorners {
+  border-radius: 8px;
+}
+
+/* Reduce sliders size */
+scale trough slider {
+  min-height: 18px;
+  min-width: 18px;
+}
+.fullscreen.tvmode scale trough slider {
+  min-height: 20px;
+  min-width: 20px;
+}
+
+.videowidget {
+  min-width: 320px;
+  min-height: 180px;
+}
+
+.fullscreen.tvmode popover box {
+  text-shadow: none;
+  font-size: 21px;
+  font-weight: 500;
+}
+.clappercontrols {
+  margin-left: 2px;
+  margin-right: 2px;
+}
+.fullscreen.tvmode .clappercontrols {
+  margin-left: 1px;
+  margin-right: 1px;
+}
+.clappercontrolsbutton {
+  margin: 3px;
+  margin-left: 1px;
+  margin-right: 1px;
+}
+.fullscreen.tvmode .clappercontrolsbutton {
+  min-width: 32px;
+  min-height: 32px;
+  margin: 5px;
+  margin-left: 4px;
+  margin-right: 4px;
+}
+.clappercontrolsbutton.text-button {
+  padding-left: 4px;
+  padding-right: 4px;
+}
+.fullscreen.tvmode button image {
+  -gtk-icon-shadow: none;
+}
+.fullscreen.tvmode radio {
+  margin-left: 0px;
+  margin-right: 4px;
+  border: 2px solid;
+  min-width: 17px;
+  min-height: 17px;
+}
+
+/* Also affects popover buttons */
+.fullscreen.tvmode .clappercontrols button image {
+  -gtk-icon-size: 26px;
+}
+.clappercontrolsbutton.text-button label {
+  font-family: 'Cantarell', sans-serif;
+  font-variant-numeric: tabular-nums;
+  font-weight: 600;
+}
+.fullscreen.tvmode .clappercontrolsbutton.text-button label {
+  font-size: 22px;
+  text-shadow: none;
+}
+
+/* Top Revealer */
+.fullscreen.tvmode .revealertopgrid {
+  font-family: 'Cantarell', sans-serif;
+}
+.fullscreen.tvmode .tvtitle {
+  font-size: 28px;
+  font-weight: 500;
+  text-shadow: none;
+}
+.fullscreen.tvmode .tvtime {
+  margin-top: -2px;
+  margin-bottom: -2px;
+  min-height: 4px;
+  font-size: 38px;
+  font-weight: 700;
+  font-variant-numeric: tabular-nums;
+}
+.fullscreen.tvmode .tvendtime {
+  margin-top: -4px;
+  margin-bottom: 2px;
+  min-height: 6px;
+  font-size: 24px;
+  font-weight: 600;
+  font-variant-numeric: tabular-nums;
+}
+
+/* Position Scale */
+.positionscale {
+  margin: -2px;
+}
+.positionscale trough highlight {
+  min-height: 6px;
+}
+.fullscreen.tvmode .positionscale {
+  padding-left: 12px;
+  padding-right: 12px;
+}
+.fullscreen.tvmode .positionscale.fine-tune {
+  padding-left: 12px;
+  padding-right: 12px;
+}
+.fullscreen.tvmode .positionscale trough slider {
+  color: transparent;
+  background: transparent;
+  border-color: transparent;
+  box-shadow: none;
+  outline: none;
+}
+.positionscale mark indicator {
+  min-height: 6px;
+}
+.positionscale.fine-tune mark indicator {
+  min-height: 6px;
+}
+.fullscreen.tvmode .positionscale mark indicator {
+  min-height: 7px;
+  min-width: 2px;
+}
+.fullscreen.tvmode .positionscale.fine-tune mark indicator {
+  min-height: 7px;
+  min-width: 2px;
+}
+.positionscale marks.top {
+  margin-top: -6px;
+  margin-bottom: 4px;
+}
+.positionscale marks.bottom {
+  margin-top: 4px;
+  margin-bottom: -6px;
+}
+.fullscreen.tvmode .positionscale marks.top {
+  margin-bottom: 2px;
+}
+.fullscreen.tvmode .positionscale marks.bottom {
+  margin-top: 2px;
+}
+.fullscreen.tvmode .positionscale trough {
+  border-radius: 3px;
+}
+.fullscreen.tvmode .positionscale trough highlight {
+  border-radius: 3px;
+  min-height: 20px;
+}
+.fullscreen.tvmode .positionscale.fine-tune trough highlight {
+  border-radius: 3px;
+  min-height: 20px;
+}
+
+/* Volume Scale */
+.volumescale {
+  margin: -2px;
+  margin-left: -8px;
+  margin-right: -6px;
+  min-height: 180px;
+}
+.fullscreen.tvmode .volumescale {
+  margin: 2px;
+  margin-left: -6px;
+  margin-right: -4px;
+  min-height: 260px;
+}
+.volumescale marks label {
+  margin-right: 4px;
+  margin-top: -4px;
+  margin-bottom: -6px;
+}
+.volumescale trough highlight {
+  min-width: 4px;
+}
+.fullscreen.tvmode .volumescale trough highlight {
+  min-width: 6px;
+}
+.overamp trough highlight {
+  background: @error_color;
+}
+
+/* Elapsed Popover */
+.elapsedpopover {
+  min-width: 326px;
+}
+.fullscreen.tvmode .elapsedpopover {
+  min-width: 448px;
+}
+.elapsedpopover contents {
+  padding-bottom: 0px;
+}
+.speedscale {
+  margin-left: 4px;
+  margin-right: 4px;
+}
+.speedscale trough highlight {
+  min-height: 4px;
+}
+.fullscreen.tvmode .speedscale trough highlight {
+  min-height: 6px;
+}
+
+.narrowbutton {
+  min-width: 8px;
+}
+@keyframes halfrotation {
+  to { transform: rotate(0.5turn); }
+}
+.halfrotate {
+  animation-name: halfrotation;
+  animation-duration: 200ms;
+  animation-delay: 280ms;
+  animation-timing-function: linear;
+  animation-fill-mode: forwards;
+  animation-iteration-count: 1;
+}
+
+/* Chapters */
+.chapterlabel {
+  min-width: 32px;
+}
+.fullscreen.tvmode .chapterlabel {
+  min-width: 40px;
+  text-shadow: none;
+  font-size: 22px;
+  font-weight: 600;
+}
+
+/* Open URI Dialog */
+.uridialogbox {
+  margin: 10px;
+}
+
+/* Tweaks */
+.nobackground {
+  background: none;
+}
+.noborder {
+  border: none;
+}
+.controlsbox {
+  background: @theme_bg_color;
+}
+.gpufriendly {
+  box-shadow: -8px -8px transparent, 8px 8px transparent;
+}
+.fullscreen.gpufriendlyfs {
+  box-shadow: none;
+}
+
+/* Error BG */
+.blackbackground {
+  background: black;
+}
+
+/** SCALING LOW-RES **/
+.fullscreen.tvmode.lowres .clappercontrols button image {
+  -gtk-icon-size: 22px;
+}
+.fullscreen.tvmode.lowres .clappercontrolsbutton {
+  min-width: 28px;
+  min-height: 28px;
+}
+.fullscreen.tvmode.lowres .clappercontrolsbutton.text-button label {
+  font-size: 21px;
+}
+.fullscreen.tvmode.lowres .positionscale trough highlight {
+  min-height: 18px;
+}
+.fullscreen.tvmode.lowres .positionscale.fine-tune trough highlight {
+  min-height: 18px;
+}
+.fullscreen.tvmode.lowres popover box {
+  font-size: 19px;
+}
+.fullscreen.tvmode.lowres radio {
+  min-width: 15px;
+  min-height: 15px;
+}
+.fullscreen.tvmode.lowres .clapperplaylist row button {
+  min-width: 32px;
+  min-height: 32px;
+}
+.fullscreen.tvmode.lowres .tvtitle {
+  font-size: 26px;
+}
+.fullscreen.tvmode.lowres .tvtime {
+  font-size: 34px;
+}
+.fullscreen.tvmode.lowres .tvendtime {
+  font-size: 21px;
+}
+.fullscreen.tvmode.lowres .elapsedpopover {
+  min-width: 410px;
+}
+.fullscreen.tvmode.lowres .chapterlabel {
+  font-size: 21px;
+}
+
+/** SCALING HI-RES **/
+.fullscreen.tvmode.hires .clappercontrols button image {
+  -gtk-icon-size: 24px; /* Sharpest on 2160p with scaling 2x */
+}

data/com.github.rafostar.Clapper.data.gresource.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/com/github/rafostar/Clapper">
+    <file preprocess="xml-stripblanks" alias="icons/scalable/actions/play-symbolic.svg">icons/play-symbolic.svg</file>
+    <file preprocess="xml-stripblanks" alias="icons/scalable/actions/pause-symbolic.svg">icons/pause-symbolic.svg</file>
+    <file preprocess="xml-stripblanks" alias="icons/scalable/actions/pip-in-symbolic.svg">icons/pip-in-symbolic.svg</file>
+    <file preprocess="xml-stripblanks" alias="icons/scalable/actions/pip-out-symbolic.svg">icons/pip-out-symbolic.svg</file>
+  </gresource>
+</gresources>

data/com.github.rafostar.Clapper.desktop

@@ -4,10 +4,8 @@ GenericName=Multimedia Player
 Comment=Play videos and music
 Categories=GTK;GNOME;AudioVideo;Player;Video;TV;
 MimeType=application/claps;application/mpeg4-iod;application/mpeg4-muxcodetable;application/mxf;application/ogg;application/ram;application/sdp;application/streamingmedia;application/vnd.apple.mpegurl;application/vnd.ms-asf;application/vnd.rn-realmedia;application/vnd.rn-realmedia-vbr;application/x-extension-m4a;application/x-extension-mp4;application/x-flac;application/x-flash-video;application/x-matroska;application/x-ogg;application/x-streamingmedia;audio/3gpp;audio/3gpp2;audio/aac;audio/ac3;audio/amr;audio/amr-wb;audio/basic;audio/dv;audio/eac3;audio/flac;audio/m4a;audio/midi;audio/mp1;audio/mp2;audio/mp3;audio/mp4;audio/mpeg;audio/mpegurl;audio/mpg;audio/ogg;audio/opus;audio/scpls;audio/vnd.dolby.heaac.1;audio/vnd.dolby.heaac.2;audio/vnd.dolby.mlp;audio/vnd.dts;audio/vnd.dts.hd;audio/vnd.rn-realaudio;audio/wav;audio/webm;audio/x-aac;audio/x-aiff;audio/x-ape;audio/x-flac;audio/x-gsm;audio/x-it;audio/x-m4a;audio/x-matroska;audio/x-mod;audio/x-mp1;audio/x-mp2;audio/x-mp3;audio/x-mpeg;audio/x-mpegurl;audio/x-mpg;audio/x-ms-asf;audio/x-ms-wma;audio/x-musepack;audio/x-pn-aiff;audio/x-pn-au;audio/x-pn-realaudio;audio/x-pn-wav;audio/x-real-audio;audio/x-realaudio;audio/x-s3m;audio/x-scpls;audio/x-shorten;audio/x-speex;audio/x-tta;audio/x-vorbis;audio/x-vorbis+ogg;audio/x-wav;audio/x-wavpack;audio/x-xm;video/3gp;video/3gpp;video/3gpp2;video/divx;video/dv;video/fli;video/flv;video/mp2t;video/mp4;video/mp4v-es;video/mpeg;video/mpeg-system;video/msvideo;video/ogg;video/quicktime;video/vnd.mpegurl;video/vnd.rn-realvideo;video/webm;video/x-avi;video/x-flc;video/x-fli;video/x-flv;video/x-m4v;video/x-matroska;video/x-mpeg;video/x-mpeg-system;video/x-mpeg2;video/x-ms-asf;video/x-ms-wm;video/x-ms-wmv;video/x-ms-wmx;video/x-msvideo;video/x-nsv;video/x-ogm+ogg;video/x-theora;video/x-theora+ogg;x-content/audio-cdda;x-content/audio-player;x-content/video-dvd;x-scheme-handler/mms;x-scheme-handler/mmsh;x-scheme-handler/rtmp;x-scheme-handler/rtp;x-scheme-handler/rtsp;
-Exec=clapper %U
+Exec=com.github.rafostar.Clapper %U
 Icon=com.github.rafostar.Clapper
-DBusActivatable=true
-StartupNotify=true
 Terminal=false
 Type=Application
 # Translators: Search terms to find this application. Do NOT translate the semicolons!

data/com.github.rafostar.Clapper.gschema.xml

@@ -0,0 +1,116 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<schemalist gettext-domain="com.github.rafostar.Clapper">
+  <schema id="com.github.rafostar.Clapper" path="/com/github/rafostar/Clapper/">
+    <!-- General -->
+    <key name="fullscreen-auto" type="b">
+      <default>false</default>
+      <summary>Automatically enter fullscreen when first file is loaded</summary>
+    </key>
+    <key name="volume-custom" type="b">
+      <default>false</default>
+      <summary>Set custom volume value at startup</summary>
+    </key>
+    <key name="volume-value" type="i">
+      <default>100</default>
+      <summary>Custom initial volume value in percentage after startup</summary>
+    </key>
+    <key name="after-playback" type="i">
+      <default>0</default>
+      <summary>What to do after playback finishes</summary>
+    </key>
+
+    <!-- Behavior -->
+    <key name="seeking-mode" type="i">
+      <default>0</default>
+      <summary>Mode used for seeking</summary>
+    </key>
+    <key name="seeking-value" type="i">
+      <default>10</default>
+      <summary>Time amount to seek with single press of arrow keys</summary>
+    </key>
+    <key name="seeking-unit" type="i">
+      <default>0</default>
+      <summary>Unit ID to use with seeking value</summary>
+    </key>
+    <key name="resume-enabled" type="b">
+      <default>true</default>
+      <summary>Ask to resume unfinished video</summary>
+    </key>
+    <key name="resume-database" type="s">
+      <default>'[]'</default>
+      <summary>Data storing unfinished videos resume info</summary>
+    </key>
+    <key name="floating-stick" type="b">
+      <default>false</default>
+      <summary>Auto stick floating window to all workspaces</summary>
+    </key>
+
+    <!-- Audio -->
+    <key name="audio-offset" type="i">
+      <default>0</default>
+      <summary>Offset time for audio tracks relative to video (milliseconds)</summary>
+    </key>
+
+    <!-- Subtitles -->
+    <key name="subtitle-font" type="s">
+      <default>"Sans 12"</default>
+      <summary>The subtitles font description</summary>
+    </key>
+
+    <!-- Network -->
+    <key name="webserver-enabled" type="b">
+      <default>false</default>
+      <summary>Enable WebSocket server for remote playback control</summary>
+    </key>
+    <key name="webserver-port" type="i">
+      <default>6446</default>
+      <summary>Listening port to use for incoming WebSocket connections</summary>
+    </key>
+    <key name="webapp-enabled" type="b">
+      <default>false</default>
+      <summary>Run built-in broadway based web application</summary>
+    </key>
+    <key name="webapp-port" type="i">
+      <default>8086</default>
+      <summary>Port for running broadwayd service</summary>
+    </key>
+
+    <!-- Tweaks -->
+    <key name="dark-theme" type="b">
+      <default>true</default>
+      <summary>Enable to force the app to use dark theme variant</summary>
+    </key>
+    <key name="render-shadows" type="b">
+      <default>true</default>
+      <summary>Enable rendering window shadows (only if theme has them)</summary>
+    </key>
+
+    <!-- GStreamer -->
+    <key name="plugin-ranking" type="s">
+      <default>'{}'</default>
+      <summary>Custom values for GStreamer plugin ranking</summary>
+    </key>
+    <key name="use-playbin3" type="b">
+      <default>false</default>
+      <summary>Use playbin3 element instead of playbin2</summary>
+    </key>
+    <key name="use-pipewire" type="b">
+      <default>false</default>
+      <summary>Use PipeWire for audio output</summary>
+    </key>
+    <key name="play-flags" type="i">
+      <default>1687</default>
+      <summary>Set PlayFlags for playbin</summary>
+    </key>
+
+    <!-- Other -->
+    <key name="window-size" type="s">
+      <default>'[800, 490]'</default>
+      <summary>Stores window size to restore on next launch</summary>
+    </key>
+    <key name="volume-last" type="d">
+      <default>1</default>
+      <summary>Stores last linear volume value to apply on startup</summary>
+    </key>
+  </schema>
+</schemalist>

data/com.github.rafostar.Clapper.metainfo.xml

@@ -1,139 +1,53 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Copyright 2024 Rafał Dzięgiel -->
 <component type="desktop-application">
   <id>com.github.rafostar.Clapper</id>
-  <name>Clapper</name>
-  <summary>Lean back and enjoy videos</summary>
   <metadata_license>CC0-1.0</metadata_license>
   <project_license>GPL-3.0-or-later</project_license>
-  <!-- Old AppStream compat -->
-  <developer_name>Rafał Dzięgiel</developer_name>
-  <developer id="com.github.rafostar">
-    <name>Rafał Dzięgiel</name>
-  </developer>
-  <translation type="gettext">clapper-app</translation>
+  <name>Clapper</name>
+  <summary>Simple and modern GNOME media player</summary>
+  <translation type="gettext">com.github.rafostar.Clapper</translation>
   <launchable type="desktop-id">com.github.rafostar.Clapper.desktop</launchable>
+  <description>
+    <p>
+      Clapper is a GNOME media player built using GJS with GTK4 toolkit.
+      The media player is using GStreamer as a media backend and renders
+      everything via OpenGL. Player works natively on both Xorg and Wayland.
+      It also supports hardware acceleration through VA-API on AMD/Intel GPUs,
+      NVDEC on Nvidia and V4L2 on mobile devices.
+    </p>
+    <p>
+      The media player has an adaptive GUI. When viewing videos in "Windowed Mode",
+      Clapper will use mostly unmodified GTK widgets to match your OS look nicely.
+      When player enters "Fullscreen Mode" all GUI elements will become darker, bigger
+      and semi-transparent for your viewing comfort. It also has a "Floating Mode" which
+      displays only video on top of all other windows for a PiP-like viewing experience.
+      Mobile friendly transitions are also supported.
+    </p>
+  </description>
+  <developer_name>Rafał Dzięgiel</developer_name>
   <url type="homepage">https://rafostar.github.io/clapper</url>
   <url type="bugtracker">https://github.com/Rafostar/clapper/issues</url>
   <url type="donation">https://liberapay.com/Clapper</url>
   <url type="help">https://github.com/Rafostar/clapper/wiki</url>
-  <url type="vcs-browser">https://github.com/Rafostar/clapper</url>
-  <description>
-    <p>
-      Clapper is a modern media player designed for simplicity and ease of use.
-      Powered by GStreamer and built for the GNOME desktop environment using
-      GTK4 toolkit, it has a clean and stylish interface that lets you focus
-      on enjoying your favorite videos.
-    </p>
-    <p>
-      Clapper uses a playback queue where you can add multiple media files.
-      Think of it like a playlist that you can build. You can easily reorder
-      items or remove them from the queue with a simple drag and drop operation.
-    </p>
-  </description>
-  <screenshots>
-    <screenshot type="default">
-      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot_01.png</image>
-      <caption>Modern player with minimalist look</caption>
-    </screenshot>
-    <screenshot>
-      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot_02.png</image>
-      <caption>See actual title of what you are watching</caption>
-    </screenshot>
-    <screenshot>
-      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot_03.png</image>
-      <caption>Queue multiple media in any order you like</caption>
-    </screenshot>
-    <screenshot>
-      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot_04.png</image>
-      <caption>Play either local or network content</caption>
-    </screenshot>
-    <screenshot>
-      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot_05.png</image>
-      <caption>Enjoy adaptive UI that fits any screen size</caption>
-    </screenshot>
-  </screenshots>
-  <!-- Linux Phone Apps parses categories from XML -->
   <categories>
     <category>AudioVideo</category>
     <category>Video</category>
   </categories>
+  <screenshots>
+    <screenshot type="default">
+      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot-windowed.png</image>
+    </screenshot>
+    <screenshot>
+      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot-fullscreen.png</image>
+    </screenshot>
+    <screenshot>
+      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot-floating.png</image>
+    </screenshot>
+    <screenshot>
+      <image type="source">https://raw.githubusercontent.com/wiki/Rafostar/clapper/media/screenshot-mobile.png</image>
+    </screenshot>
+  </screenshots>
   <releases>
-    <release version="0.6.1" date="2024-07-01">
-      <description>
-        <p>Bug fixes and translation updates</p>
-      </description>
-    </release>
-    <release version="0.6.0" date="2024-04-22">
-      <description>
-        <p>
-          In this release Clapper code was rewritten from scratch. Now split into
-          two libraries and an application built on top of them, with:
-        </p>
-        <ul>
-          <li>Brand new, simplified and consistent UI</li>
-          <li>Player now operates on playback queue model</li>
-          <li>Multiple queue progression modes to choose from (consecutive, repeat item, carousel, shuffle)</li>
-          <li>New media info window (shows media information and GStreamer elements used to play it)</li>
-          <li>More dialogs and windows use libadwaita</li>
-          <li>Multiple new status/info overlays showing what is going and other messages</li>
-          <li>Added video buffering animation</li>
-          <li>Clapper will now inform users about missing GStreamer plugins needed for playback</li>
-          <li>Video chapters now appear throughout the seek bar on hover and while dragging slider</li>
-          <li>Vastly expanded MPRIS implementation</li>
-          <li>Integrated media discovery (see titles of queued items instead of URIs)</li>
-          <li>Expanded WebSocket server functionality (for remote playback control)</li>
-          <li>Increased maximum volume amplification level to 200%</li>
-          <li>Added some new keyboard shortcuts</li>
-          <li>In addition to volume, now also speed and queue progression mode are restored on launch</li>
-          <li>Fixed keyboard shortcuts not being reversed (e.g. seek) in RTL languages</li>
-          <li>Toggle play moved to left mouse button, right one now opens context menu (which was previously hard to access)</li>
-          <li>Many bug fixes and QoL improvements</li>
-        </ul>
-      </description>
-    </release>
-    <release version="0.5.2" date="2022-06-24">
-      <description>
-        <p>Fixes:</p>
-        <ul>
-          <li>Fix time labels display on RTL languages</li>
-          <li>Improved GL/GLES context automatic selection</li>
-        </ul>
-        <p>New translations:</p>
-        <ul>
-          <li>Hebrew</li>
-        </ul>
-      </description>
-    </release>
-    <release version="0.5.1" date="2022-05-29">
-      <description>
-        <p>
-          A quick hotfix release. Fixes problems with new video sink on displays with non-100% scaling applied.
-          See 0.5.0 version release notes for full recent changelog.
-        </p>
-      </description>
-    </release>
-    <release version="0.5.0" date="2022-05-28">
-      <description>
-        <p>Changes:</p>
-        <ul>
-          <li>Includes and uses new, improved GStreamer video sink</li>
-          <li>All networking ported to libsoup3</li>
-          <li>A lot of cleanup, including removal of unfinished web application and old YT code</li>
-          <li>App now supports D-Bus launching (DBusActivatable)</li>
-          <li>Other small fixes</li>
-        </ul>
-        <p>New translations:</p>
-        <ul>
-          <li>Arabic</li>
-          <li>Basque</li>
-          <li>French</li>
-          <li>Japanese</li>
-          <li>Swedish</li>
-          <li>Turkish</li>
-        </ul>
-      </description>
-    </release>
     <release version="0.4.1" date="2021-12-20">
       <description>
         <p>Fixes:</p>
@@ -268,17 +182,17 @@
       </description>
     </release>
   </releases>
-  <content_rating type="oars-1.1"/>
-  <branding>
-    <color type="primary" scheme_preference="light">#8484ee</color>
-    <color type="primary" scheme_preference="dark">#1a1a74</color>
-  </branding>
+  <content_rating type="oars-1.1" />
   <recommends>
     <control>keyboard</control>
     <control>pointing</control>
     <control>touch</control>
   </recommends>
   <requires>
-    <display_length compare="ge">360</display_length>
+    <display_length compare="ge">small</display_length>
   </requires>
+  <custom>
+    <value key="Purism::form_factor">workstation</value>
+    <value key="Purism::form_factor">mobile</value>
+  </custom>
 </component>

data/gstclapper-mpris-gdbus.xml

@@ -31,7 +31,7 @@
       <arg name="Uri" type="s" direction="in"/>
     </method>
     <signal name="Seeked">
-      <arg name="Position" type="x"/>
+      <arg type="x" name="Position"/>
     </signal>
     <property name="PlaybackStatus" type="s" access="read"/>
     <property name="LoopStatus" type="s" access="readwrite"/>
@@ -49,38 +49,4 @@
     <property name="CanSeek" type="b" access="read"/>
     <property name="CanControl" type="b" access="read"/>
   </interface>
-  <interface name="org.mpris.MediaPlayer2.TrackList">
-    <method name="GetTracksMetadata">
-      <arg name="TrackIds" type="ao" direction="in"/>
-      <arg name="Metadata" type="aa{sv}" direction="out"/>
-    </method>
-    <method name="AddTrack">
-      <arg name="Uri" type="s" direction="in"/>
-      <arg name="AfterTrack" type="o" direction="in"/>
-      <arg name="SetAsCurrent" type="b" direction="in"/>
-    </method>
-    <method name="RemoveTrack">
-      <arg name="TrackId" type="o" direction="in"/>
-    </method>
-    <method name="GoTo">
-      <arg name="TrackId" type="o" direction="in"/>
-    </method>
-    <signal name="TrackListReplaced">
-      <arg name="Tracks" type="ao"/>
-      <arg name="CurrentTrack" type="o"/>
-    </signal>
-    <signal name="TrackAdded">
-      <arg name="Metadata" type="a{sv}"/>
-      <arg name="AfterTrack" type="o"/>
-    </signal>
-    <signal name="TrackRemoved">
-      <arg name="TrackId" type="o"/>
-    </signal>
-    <signal name="TrackMetadataChanged">
-      <arg name="TrackId" type="o"/>
-      <arg name="Metadata" type="a{sv}"/>
-    </signal>
-    <property name="Tracks" type="ao" access="read"/>
-    <property name="CanEditTracks" type="b" access="read"/>
-  </interface>
 </node>

data/icons/pause-symbolic.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg">
+    <g fill="#2e3436">
+        <path d="m 3 3 h 4 v 10 h -4 z m 0 0"/>
+        <path d="m 9 3 h 4 v 10 h -4 z m 0 0"/>
+    </g>
+</svg>

data/icons/pip-in-symbolic.svg

@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <filter id="a" height="100%" width="100%" x="0%" y="0%">
+        <feColorMatrix in="SourceGraphic" type="matrix" values="0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0"/>
+    </filter>
+    <mask id="b">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.3"/>
+        </g>
+    </mask>
+    <clipPath id="c">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="d">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="e">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="f">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="g">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="h">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="i">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="j">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="k">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="l">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="m">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="n">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="o">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="p">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.3"/>
+        </g>
+    </mask>
+    <clipPath id="q">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="r">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.5"/>
+        </g>
+    </mask>
+    <clipPath id="s">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <g fill="#2e3436">
+        <path d="m 1 2.007812 c -0.550781 0 -1 0.449219 -1 1 v 9 c 0 0.550782 0.449219 1 1 1 h 4 v -2 h -3 v -7 h 10 v 3 h 2 v -4 c 0 -0.550781 -0.449219 -1 -1 -1 z m 0 0" fill-opacity="0.35"/>
+        <path d="m 9 10 c -0.550781 0 -1 0.449219 -1 1 v 4.007812 c 0 0.550782 0.449219 1 1 1 h 6 c 0.550781 0 1 -0.449218 1 -1 v -4.007812 c 0 -0.550781 -0.449219 -1 -1 -1 z m 1 2 h 4 v 2.007812 h -4 z m 0 0"/>
+        <path d="m 3.132812 5.140625 c 0.171876 -0.164063 0.496094 -0.1875 0.757813 0.015625 l 3.109375 3.089844 v 0.753906 h -0.753906 l -3.109375 -3.089844 c -0.191407 -0.191406 -0.179688 -0.597656 -0.003907 -0.769531 z m 0 0"/>
+        <path d="m 4 9 h 4 v 1 h -4 z m 0 0"/>
+        <path d="m 7 6 h 1 v 4 h -1 z m 0 0"/>
+    </g>
+    <g clip-path="url(#c)" mask="url(#b)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 562.460938 212.058594 h 10.449218 c -1.183594 0.492187 -1.296875 2.460937 0 3 h -10.449218 z m 0 0" fill="#2e3436"/>
+    </g>
+    <g clip-path="url(#e)" mask="url(#d)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 16 632 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#g)" mask="url(#f)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 17 631 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#i)" mask="url(#h)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 18 634 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#k)" mask="url(#j)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 16 634 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#m)" mask="url(#l)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 17 635 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#o)" mask="url(#n)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 19 635 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#q)" mask="url(#p)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 136 660 v 7 h 7 v -7 z m 0 0" fill="#2e3436"/>
+    </g>
+    <g clip-path="url(#s)" mask="url(#r)" transform="matrix(1 0 0 1 -580 -764)">
+        <path d="m 219 642 h 3 v 12 h -3 z m 0 0" fill="#2e3436"/>
+    </g>
+</svg>

data/icons/pip-out-symbolic.svg

@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <filter id="a" height="100%" width="100%" x="0%" y="0%">
+        <feColorMatrix in="SourceGraphic" type="matrix" values="0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0"/>
+    </filter>
+    <mask id="b">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.3"/>
+        </g>
+    </mask>
+    <clipPath id="c">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="d">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="e">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="f">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="g">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="h">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="i">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="j">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="k">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="l">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="m">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="n">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
+        </g>
+    </mask>
+    <clipPath id="o">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="p">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.3"/>
+        </g>
+    </mask>
+    <clipPath id="q">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <mask id="r">
+        <g filter="url(#a)">
+            <path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.5"/>
+        </g>
+    </mask>
+    <clipPath id="s">
+        <path d="m 0 0 h 1024 v 800 h -1024 z"/>
+    </clipPath>
+    <g fill="#2e3436">
+        <path d="m 1 2.007812 c -0.550781 0 -1 0.449219 -1 1 v 9 c 0 0.550782 0.449219 1 1 1 h 4 v -2 h -3 v -7 h 10 v 3 h 2 v -4 c 0 -0.550781 -0.449219 -1 -1 -1 z m 0 0"/>
+        <path d="m 9 10 c -0.550781 0 -1 0.449219 -1 1 v 4.007812 c 0 0.550782 0.449219 1 1 1 h 6 c 0.550781 0 1 -0.449218 1 -1 v -4.007812 c 0 -0.550781 -0.449219 -1 -1 -1 z m 1 2 h 4 v 2.007812 h -4 z m 0 0" fill-opacity="0.35"/>
+        <path d="m 7.863281 9.871094 c -0.167969 0.164062 -0.492187 0.1875 -0.753906 -0.019532 l -3.113281 -3.085937 v -0.753906 h 0.753906 l 3.109375 3.085937 c 0.191406 0.191406 0.179687 0.601563 0.003906 0.773438 z m 0 0"/>
+        <path d="m 6.996094 6.011719 h -4 v -1 h 4 z m 0 0"/>
+        <path d="m 3.996094 9.011719 h -1 v -4 h 1 z m 0 0"/>
+    </g>
+    <g clip-path="url(#c)" mask="url(#b)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 562.460938 212.058594 h 10.449218 c -1.183594 0.492187 -1.296875 2.460937 0 3 h -10.449218 z m 0 0" fill="#2e3436"/>
+    </g>
+    <g clip-path="url(#e)" mask="url(#d)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 16 632 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#g)" mask="url(#f)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 17 631 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#i)" mask="url(#h)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 18 634 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#k)" mask="url(#j)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 16 634 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#m)" mask="url(#l)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 17 635 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#o)" mask="url(#n)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 19 635 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
+    </g>
+    <g clip-path="url(#q)" mask="url(#p)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 136 660 v 7 h 7 v -7 z m 0 0" fill="#2e3436"/>
+    </g>
+    <g clip-path="url(#s)" mask="url(#r)" transform="matrix(1 0 0 1 -600 -764)">
+        <path d="m 219 642 h 3 v 12 h -3 z m 0 0" fill="#2e3436"/>
+    </g>
+</svg>

data/icons/play-symbolic.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg height="16px" viewBox="2 2 16 16" width="16px" xmlns="http://www.w3.org/2000/svg">
+    <path d="M 5 3.746094 L 5 16.246094 L 6.25 16.246094 C 6.46875 16.246094 6.683594 16.195312 6.875 16.089844 L 15.625 11.089844 C 16.015625 10.875 16.210938 10.433594 16.210938 9.996094 C 16.210938 9.554688 16.015625 9.117188 15.625 8.902344 L 6.875 3.902344 C 6.683594 3.792969 6.46875 3.746094 6.25 3.746094 Z M 5 3.746094" fill="#2e3436"/>
+</svg>

data/meson.build

@@ -0,0 +1,34 @@
+iconsdir = join_paths(datadir, 'icons', 'hicolor')
+
+appstream_util = find_program('appstream-util', required: false)
+if appstream_util.found()
+  test('Validate appstream file', appstream_util, args: [
+    'validate-relax',
+    join_paths(meson.current_source_dir(), 'com.github.rafostar.Clapper.metainfo.xml')
+  ])
+endif
+
+install_data('com.github.rafostar.Clapper.svg',
+  install_dir: join_paths(iconsdir, 'scalable', 'apps')
+)
+install_data('com.github.rafostar.Clapper-symbolic.svg',
+  install_dir: join_paths(iconsdir, 'symbolic', 'apps')
+)
+install_data('com.github.rafostar.Clapper.gschema.xml',
+  install_dir: join_paths(datadir, 'glib-2.0', 'schemas')
+)
+install_data('com.github.rafostar.Clapper.xml',
+  install_dir: join_paths(datadir, 'mime', 'packages')
+)
+install_data('com.github.rafostar.Clapper.desktop',
+  install_dir: join_paths(datadir, 'applications')
+)
+install_data('com.github.rafostar.Clapper.metainfo.xml',
+  install_dir: join_paths(datadir, 'metainfo')
+)
+gnome.compile_resources('com.github.rafostar.Clapper.data',
+  'com.github.rafostar.Clapper.data.gresource.xml',
+  gresource_bundle: true,
+  install: true,
+  install_dir: pkgdatadir,
+)

doc/meson.build

@@ -1,10 +0,0 @@
-gi_docgen = find_program('gi-docgen', required: get_option('doc'))
-dot = find_program('dot', required: get_option('doc')) # Class hierarchy generation
-build_doc = (gi_docgen.found() and dot.found() and get_option('doc'))
-
-if build_doc
-  if not build_gir
-    error('Building documentation requires introspection to be compiled')
-  endif
-  subdir('reference')
-endif

doc/reference/clapper-gtk/clapper-gtk.toml.in

@@ -1,63 +0,0 @@
-[library]
-version = "@CLAPPER_VERSION@"
-browse_url = "https://github.com/Rafostar/clapper/"
-repository_url = "https://github.com/Rafostar/clapper.git"
-website_url = "https://rafostar.github.io/clapper/"
-docs_url = "https://rafostar.github.io/clapper/doc/clapper-gtk/"
-authors = "Rafał Dzięgiel"
-logo_url = "clapper-logo.svg"
-license = "LGPL-2.1-or-later"
-description = "Clapper GTK integration library"
-devhelp = true
-search_index = true
-
-dependencies = ["Clapper@CLAPPER_VERSION_SUFFIX@", "Gtk-4.0"]
-
-  [dependencies."Clapper@CLAPPER_VERSION_SUFFIX@"]
-  name = "Clapper"
-  description = "Clapper playback library"
-  docs_url = "https://rafostar.github.io/clapper/doc/clapper/"
-
-  [dependencies."Gtk-4.0"]
-  name = "Gtk"
-  description = "The GTK toolkit"
-  docs_url = "https://docs.gtk.org/gtk4/"
-
-related = ["GLib-2.0", "GObject-2.0", "Gio-2.0", "Gst-1.0"]
-
-  [related."GLib-2.0"]
-  name = "GLib"
-  description = "A general-purpose, portable utility library"
-  docs_url = "https://docs.gtk.org/glib/"
-
-  [related."GObject-2.0"]
-  name = "GObject"
-  description = "The base type system library"
-  docs_url = "https://docs.gtk.org/gobject/"
-
-  [related."Gio-2.0"]
-  name = "Gio"
-  description = "GObject Interfaces and Objects, Networking, IPC, and I/O"
-  docs_url = "https://docs.gtk.org/gio/"
-
-  [related."Gst-1.0"]
-  name = "Gst"
-  description = "GStreamer core library"
-  docs_url = "https://gstreamer.freedesktop.org/documentation/gstreamer/gi-index.html"
-
-[theme]
-name = "basic"
-show_index_summary = true
-show_class_hierarchy = true
-
-[source-location]
-base_url = "https://github.com/Rafostar/clapper/tree/master/"
-
-[extra]
-# The same order will be used when generating the index
-content_files = [
-]
-content_images = [
-  "images/clapper-logo.svg",
-]
-urlmap_file = "urlmap.js"

doc/reference/clapper-gtk/images/clapper-logo.svg

@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 256 256" width="256" height="256">
-  <defs>
-    <path id="b1nGq5BrLC" d="M27.2 243.52C27.2 236.16 27.2 199.83 27.2 134.22C47.64 134.22 211.12 134.22 231.56 134.22C231.56 199.83 231.56 236.16 231.56 243.52C231.56 250.4 225.96 256 218.92 256C183.07 256 57.77 256 39.84 256C32.8 256 27.2 250.4 27.2 243.52Z"></path>
-    <path id="a3jkaoNn4k" d="M24.32 103.65C24.32 106.22 24.32 127.02 24.32 129.58C24.32 132.78 26.72 135.18 29.92 135.18C50.41 135.18 215.08 135.18 235.72 135.18C238.76 135.18 241.32 132.78 241.32 129.58C241.32 127.02 241.32 106.22 241.32 103.65C241.32 100.45 238.76 98.05 235.72 98.05C194.59 98.05 50.41 98.05 29.92 98.05C26.72 98.05 24.32 100.45 24.32 103.65Z"></path>
-    <path id="atpVQ8mnd" d="M174.59 135.18L211.87 98.05L171.07 98.05L133.78 135.18L174.59 135.18Z"></path>
-    <path id="bMtYoNHu0" d="M76.81 135.18L114.1 98.05L73.13 98.05L35.84 135.18L76.81 135.18Z"></path>
-    <path id="b5oP0Glp4" d="M19.04 69.41C19.84 71.97 25.92 91.97 26.72 94.37C27.68 97.41 30.72 99.01 33.76 98.05C54.09 91.81 216.68 42.04 237 35.8C240.04 35 241.64 31.8 240.84 28.92C240.04 26.36 233.96 6.36 233.16 3.96C232.2 0.92 229.16 -0.68 226.12 0.28C185.47 12.6 43.21 56.29 22.88 62.53C19.84 63.33 18.24 66.53 19.04 69.41Z"></path>
-    <path id="lwBgev6DR" d="M176.51 54.37L129.94 29.4L169.15 17.56L215.72 42.52L176.51 54.37Z"></path>
-    <path id="cUsjEMRUu" d="M81.61 83.49L35.04 58.69L74.25 46.69L120.82 71.49L81.61 83.49Z"></path>
-    <path id="c1bcHZGXe" d="M14.72 66.69C14.72 72.93 14.72 123.02 14.72 129.26C14.72 132.62 17.44 135.18 20.64 135.18C26.56 135.18 74.09 135.18 80.01 135.18C84.33 135.18 87.21 130.86 85.61 127.02C82.89 120.78 61.45 70.53 58.73 64.29C57.77 62.05 55.69 60.77 53.29 60.77C46.73 60.77 24 60.77 20.64 60.77C17.44 60.77 14.72 63.33 14.72 66.69Z"></path>
-    <path id="f2PtH0V1vC" d="M32.64 60.61C31.52 60.61 21.92 60.61 20.64 60.61C17.44 60.61 14.72 63.33 14.72 66.53C14.72 72.77 14.72 123.02 14.72 129.26C14.72 132.46 17.44 135.18 20.64 135.18C21.92 135.18 31.52 135.18 32.64 135.18C29.44 135.18 26.72 132.46 26.72 129.26C26.72 116.62 26.72 72.77 26.72 66.53C26.72 63.33 29.44 60.61 32.64 60.61Z"></path>
-    <path id="a1SvrrkqVm" d="M231.56 135.18C231.56 143.82 231.56 148.46 231.56 149.42C231.56 149.42 231.56 149.42 231.56 149.42C108.98 149.42 40.8 149.42 27.2 149.42C27.2 149.42 27.2 149.42 27.2 149.42C27.2 140.94 27.2 136.14 27.2 135.18C27.2 135.18 27.2 135.18 27.2 135.18C149.78 135.18 217.96 135.18 231.56 135.18C231.56 135.18 231.56 135.18 231.56 135.18Z"></path>
-    <path id="agXcvKqh8" d="M104.22 162.46L104.22 234.46L163.22 198.54L104.22 162.46Z"></path>
-  </defs>
-  <g>
-    <g><use xlink:href="#b1nGq5BrLC" fill="#4747d1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#a3jkaoNn4k" fill="#4747d1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#atpVQ8mnd" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#bMtYoNHu0" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#b5oP0Glp4" fill="#4747d1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#lwBgev6DR" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#cUsjEMRUu" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#c1bcHZGXe" fill="#a9a9a9" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#f2PtH0V1vC" opacity="0.2" fill="#000000" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#a1SvrrkqVm" opacity="0.2" fill="#000000" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#agXcvKqh8" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-  </g>
-</svg>

doc/reference/clapper-gtk/meson.build

@@ -1,30 +0,0 @@
-clappergtk_toml = configure_file(
-  input: 'clapper-gtk.toml.in',
-  output: 'clapper-gtk.toml',
-  configuration: doc_version_conf,
-  install: true,
-  install_dir: join_paths(datadir, 'doc', 'clapper-gtk'),
-)
-
-custom_target('clapper-gtk-doc',
-  input: [
-    clappergtk_toml,
-    clappergtk_gir[0],
-  ],
-  output: 'clapper-gtk',
-  command: [
-    gi_docgen,
-    'generate',
-    gi_docgen_common_args,
-    '--add-include-path=@0@'.format(join_paths(meson.project_build_root(), 'src', 'lib', 'clapper')),
-    '--add-include-path=@0@'.format(join_paths(meson.project_build_root(), 'src', 'lib', 'clapper-gtk')),
-    '--config=@INPUT0@',
-    '--output-dir=@OUTPUT@',
-    '--content-dir=@0@'.format(meson.current_build_dir()),
-    '--content-dir=@0@'.format(meson.current_source_dir()),
-    '@INPUT1@',
-  ],
-  build_by_default: true,
-  install: true,
-  install_dir: join_paths(datadir, 'doc'),
-)

doc/reference/clapper-gtk/urlmap.js

@@ -1,8 +0,0 @@
-baseURLs = [
-  ['GLib', 'https://docs.gtk.org/glib/'],
-  ['GObject', 'https://docs.gtk.org/gobject/'],
-  ['Gio', 'https://docs.gtk.org/gio/'],
-  ['Gtk', 'https://docs.gtk.org/gtk4/'],
-  ['Gst', 'https://gstreamer.freedesktop.org/documentation/gstreamer/gi-index.html?'],
-  ['Clapper', 'https://rafostar.github.io/clapper/doc/clapper/'],
-]

doc/reference/clapper/clapper.toml.in

@@ -1,73 +0,0 @@
-[library]
-version = "@CLAPPER_VERSION@"
-browse_url = "https://github.com/Rafostar/clapper/"
-repository_url = "https://github.com/Rafostar/clapper.git"
-website_url = "https://rafostar.github.io/clapper/"
-docs_url = "https://rafostar.github.io/clapper/doc/clapper/"
-authors = "Rafał Dzięgiel"
-logo_url = "clapper-logo.svg"
-license = "LGPL-2.1-or-later"
-description = "Clapper playback library"
-devhelp = true
-search_index = true
-
-dependencies = ["GLib-2.0", "GObject-2.0", "Gio-2.0", "Gst-1.0", "GstBase-1.0", "GstAudio-1.0", "GstTag-1.0", "GstPbutils-1.0"]
-
-  [dependencies."GLib-2.0"]
-  name = "GLib"
-  description = "A general-purpose, portable utility library"
-  docs_url = "https://docs.gtk.org/glib/"
-
-  [dependencies."GObject-2.0"]
-  name = "GObject"
-  description = "The base type system library"
-  docs_url = "https://docs.gtk.org/gobject/"
-
-  [dependencies."Gio-2.0"]
-  name = "Gio"
-  description = "GObject Interfaces and Objects, Networking, IPC, and I/O"
-  docs_url = "https://docs.gtk.org/gio/"
-
-  [dependencies."Gst-1.0"]
-  name = "Gst"
-  description = "GStreamer core library"
-  docs_url = "https://gstreamer.freedesktop.org/documentation/gstreamer/gi-index.html"
-
-  [dependencies."GstBase-1.0"]
-  name = "GstBase"
-  description = "GStreamer base and utility classes"
-  docs_url = "https://gstreamer.freedesktop.org/documentation/base/"
-
-  [dependencies."GstAudio-1.0"]
-  name = "GstAudio"
-  description = "GStreamer audio library"
-  docs_url = "https://gstreamer.freedesktop.org/documentation/audio/"
-
-  [dependencies."GstTag-1.0"]
-  name = "GstTag"
-  description = "GStreamer tag support library"
-  docs_url = "https://gstreamer.freedesktop.org/documentation/tag/"
-
-  [dependencies."GstPbutils-1.0"]
-  name = "GstPbutils"
-  description = "GStreamer base utils library"
-  docs_url = "https://gstreamer.freedesktop.org/documentation/pbutils/"
-
-related = []
-
-[theme]
-name = "basic"
-show_index_summary = true
-show_class_hierarchy = true
-
-[source-location]
-base_url = "https://github.com/Rafostar/clapper/tree/master/"
-
-[extra]
-# The same order will be used when generating the index
-content_files = [
-]
-content_images = [
-  "images/clapper-logo.svg",
-]
-urlmap_file = "urlmap.js"

doc/reference/clapper/images/clapper-logo.svg

@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 256 256" width="256" height="256">
-  <defs>
-    <path id="b1nGq5BrLC" d="M27.2 243.52C27.2 236.16 27.2 199.83 27.2 134.22C47.64 134.22 211.12 134.22 231.56 134.22C231.56 199.83 231.56 236.16 231.56 243.52C231.56 250.4 225.96 256 218.92 256C183.07 256 57.77 256 39.84 256C32.8 256 27.2 250.4 27.2 243.52Z"></path>
-    <path id="a3jkaoNn4k" d="M24.32 103.65C24.32 106.22 24.32 127.02 24.32 129.58C24.32 132.78 26.72 135.18 29.92 135.18C50.41 135.18 215.08 135.18 235.72 135.18C238.76 135.18 241.32 132.78 241.32 129.58C241.32 127.02 241.32 106.22 241.32 103.65C241.32 100.45 238.76 98.05 235.72 98.05C194.59 98.05 50.41 98.05 29.92 98.05C26.72 98.05 24.32 100.45 24.32 103.65Z"></path>
-    <path id="atpVQ8mnd" d="M174.59 135.18L211.87 98.05L171.07 98.05L133.78 135.18L174.59 135.18Z"></path>
-    <path id="bMtYoNHu0" d="M76.81 135.18L114.1 98.05L73.13 98.05L35.84 135.18L76.81 135.18Z"></path>
-    <path id="b5oP0Glp4" d="M19.04 69.41C19.84 71.97 25.92 91.97 26.72 94.37C27.68 97.41 30.72 99.01 33.76 98.05C54.09 91.81 216.68 42.04 237 35.8C240.04 35 241.64 31.8 240.84 28.92C240.04 26.36 233.96 6.36 233.16 3.96C232.2 0.92 229.16 -0.68 226.12 0.28C185.47 12.6 43.21 56.29 22.88 62.53C19.84 63.33 18.24 66.53 19.04 69.41Z"></path>
-    <path id="lwBgev6DR" d="M176.51 54.37L129.94 29.4L169.15 17.56L215.72 42.52L176.51 54.37Z"></path>
-    <path id="cUsjEMRUu" d="M81.61 83.49L35.04 58.69L74.25 46.69L120.82 71.49L81.61 83.49Z"></path>
-    <path id="c1bcHZGXe" d="M14.72 66.69C14.72 72.93 14.72 123.02 14.72 129.26C14.72 132.62 17.44 135.18 20.64 135.18C26.56 135.18 74.09 135.18 80.01 135.18C84.33 135.18 87.21 130.86 85.61 127.02C82.89 120.78 61.45 70.53 58.73 64.29C57.77 62.05 55.69 60.77 53.29 60.77C46.73 60.77 24 60.77 20.64 60.77C17.44 60.77 14.72 63.33 14.72 66.69Z"></path>
-    <path id="f2PtH0V1vC" d="M32.64 60.61C31.52 60.61 21.92 60.61 20.64 60.61C17.44 60.61 14.72 63.33 14.72 66.53C14.72 72.77 14.72 123.02 14.72 129.26C14.72 132.46 17.44 135.18 20.64 135.18C21.92 135.18 31.52 135.18 32.64 135.18C29.44 135.18 26.72 132.46 26.72 129.26C26.72 116.62 26.72 72.77 26.72 66.53C26.72 63.33 29.44 60.61 32.64 60.61Z"></path>
-    <path id="a1SvrrkqVm" d="M231.56 135.18C231.56 143.82 231.56 148.46 231.56 149.42C231.56 149.42 231.56 149.42 231.56 149.42C108.98 149.42 40.8 149.42 27.2 149.42C27.2 149.42 27.2 149.42 27.2 149.42C27.2 140.94 27.2 136.14 27.2 135.18C27.2 135.18 27.2 135.18 27.2 135.18C149.78 135.18 217.96 135.18 231.56 135.18C231.56 135.18 231.56 135.18 231.56 135.18Z"></path>
-    <path id="agXcvKqh8" d="M104.22 162.46L104.22 234.46L163.22 198.54L104.22 162.46Z"></path>
-  </defs>
-  <g>
-    <g><use xlink:href="#b1nGq5BrLC" fill="#4747d1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#a3jkaoNn4k" fill="#4747d1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#atpVQ8mnd" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#bMtYoNHu0" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#b5oP0Glp4" fill="#4747d1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#lwBgev6DR" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#cUsjEMRUu" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#c1bcHZGXe" fill="#a9a9a9" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#f2PtH0V1vC" opacity="0.2" fill="#000000" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#a1SvrrkqVm" opacity="0.2" fill="#000000" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-    <g><use xlink:href="#agXcvKqh8" fill="#f1f1f1" transform="matrix(1, 0, 0, 0.97, 0, 0)"></use></g>
-  </g>
-</svg>

doc/reference/clapper/meson.build

@@ -1,29 +0,0 @@
-clapper_toml = configure_file(
-  input: 'clapper.toml.in',
-  output: 'clapper.toml',
-  configuration: doc_version_conf,
-  install: true,
-  install_dir: join_paths(datadir, 'doc', 'clapper'),
-)
-
-custom_target('clapper-doc',
-  input: [
-    clapper_toml,
-    clapper_gir[0],
-  ],
-  output: 'clapper',
-  command: [
-    gi_docgen,
-    'generate',
-    gi_docgen_common_args,
-    '--add-include-path=@0@'.format(join_paths(meson.project_build_root(), 'src', 'lib', 'clapper')),
-    '--config=@INPUT0@',
-    '--output-dir=@OUTPUT@',
-    '--content-dir=@0@'.format(meson.current_build_dir()),
-    '--content-dir=@0@'.format(meson.current_source_dir()),
-    '@INPUT1@',
-  ],
-  build_by_default: true,
-  install: true,
-  install_dir: join_paths(datadir, 'doc'),
-)

doc/reference/clapper/urlmap.js

@@ -1,10 +0,0 @@
-baseURLs = [
-  ['GLib', 'https://docs.gtk.org/glib/'],
-  ['GObject', 'https://docs.gtk.org/gobject/'],
-  ['Gio', 'https://docs.gtk.org/gio/'],
-  ['Gst', 'https://gstreamer.freedesktop.org/documentation/gstreamer/gi-index.html?'],
-  ['GstBase', 'https://gstreamer.freedesktop.org/documentation/base/?'],
-  ['GstAudio', 'https://gstreamer.freedesktop.org/documentation/audio/?'],
-  ['GstTag', 'https://gstreamer.freedesktop.org/documentation/tag/?'],
-  ['GstPbutils', 'https://gstreamer.freedesktop.org/documentation/pbutils/?'],
-]

doc/reference/meson.build

@@ -1,18 +0,0 @@
-doc_version_conf = configuration_data()
-doc_version_conf.set('CLAPPER_VERSION', meson.project_version())
-doc_version_conf.set('CLAPPER_VERSION_SUFFIX', clapper_version_suffix)
-
-gi_docgen_common_args = [
-  '--quiet',
-  '--no-namespace-dir',
-]
-if get_option('werror')
-  gi_docgen_common_args += ['--fatal-warnings']
-endif
-
-if build_clapper
-  subdir('clapper')
-endif
-if build_clappergtk
-  subdir('clapper-gtk')
-endif

extras/debug/Debug.js

@@ -0,0 +1,183 @@
+const { GLib } = imports.gi;
+
+let ink = { Ink: null };
+try {
+    ink = imports.ink;
+} catch(e) {}
+const { Ink } = ink;
+
+const DEBUG_ENV = GLib.getenv('DEBUG');
+
+var Debugger = class
+{
+    constructor(name, opts)
+    {
+        opts = (opts && typeof opts === 'object')
+            ? opts : {};
+
+        this.name = (name && typeof name === 'string')
+            ? name : 'GJS';
+
+        this.print_state = (opts.print_state)
+            ? true : false;
+
+        this.json_space = (typeof opts.json_space === 'number')
+            ? opts.json_space : 2;
+
+        this.name_printer    = opts.name_printer    || this._getInkPrinter(true);
+        this.message_printer = opts.message_printer || this._getDefaultPrinter();
+        this.time_printer    = opts.time_printer    || this._getInkPrinter();
+        this.high_precision  = opts.high_precision  || false;
+
+        if(typeof opts.color !== 'undefined')
+            this.color = opts.color;
+
+        this._isEnabled = false;
+        this._lastDebug = GLib.get_monotonic_time();
+
+        this.enabled = (typeof opts.enabled !== 'undefined')
+            ? opts.enabled : this._enabledAtStart;
+    }
+
+    get enabled()
+    {
+        return this._isEnabled;
+    }
+
+    set enabled(value)
+    {
+        if(this._isEnabled === value)
+            return;
+
+        this._isEnabled = (value) ? true : false;
+
+        if(!this.print_state)
+            return;
+
+        let state = (this.enabled) ? 'en' : 'dis';
+        this._runDebug(`debug ${state}abled`);
+    }
+
+    get color()
+    {
+        return this.name_printer.color;
+    }
+
+    set color(value)
+    {
+        this.name_printer.color = value;
+        this.time_printer.color = this.name_printer.color;
+    }
+
+    get debug()
+    {
+        return message => this._debug(message);
+    }
+
+    get _enabledAtStart()
+    {
+        if(!DEBUG_ENV)
+            return false;
+
+        let envArr = DEBUG_ENV.split(',');
+
+        return envArr.some(el => {
+            if(el === this.name || el === '*')
+                return true;
+
+            let searchType;
+            let offset = 0;
+
+            if(el.startsWith('*')) {
+                searchType = 'ends';
+            } else if(el.endsWith('*')) {
+                searchType = 'starts';
+                offset = 1;
+            }
+
+            if(!searchType)
+                return false;
+
+            return this.name[searchType + 'With'](
+                el.substring(1 - offset, el.length - offset)
+            );
+        });
+    }
+
+    _getInkPrinter(isBold)
+    {
+        if(!Ink)
+            return this._getDefaultPrinter();
+
+        let printer = new Ink.Printer({
+            color: Ink.colorFromText(this.name)
+        });
+
+        if(isBold)
+            printer.font = Ink.Font.BOLD;
+
+        return printer;
+    }
+
+    _getDefaultPrinter()
+    {
+        return {
+            getPainted: function() {
+                return Object.values(arguments);
+            }
+        };
+    }
+
+    _debug(message)
+    {
+        if(!this.enabled)
+            return;
+
+        this._runDebug(message);
+    }
+
+    _runDebug(message)
+    {
+        switch(typeof message) {
+            case 'string':
+                break;
+            case 'object':
+                if(
+                    message !== null
+                    && (message.constructor === Object
+                    || message.constructor === Array)
+                ) {
+                    message = JSON.stringify(message, null, this.json_space);
+                    break;
+                }
+            default:
+                message = String(message);
+                break;
+        }
+
+        let time = GLib.get_monotonic_time() - this._lastDebug;
+
+        if(!this.high_precision) {
+            time = (time < 1000)
+                ? '+0ms'
+                : (time < 1000000)
+                ? '+' + Math.floor(time / 1000) + 'ms'
+                : '+' + Math.floor(time / 1000000) + 's';
+        }
+        else {
+            time = (time < 1000)
+                ? '+' + time + 'µs'
+                : (time < 1000000)
+                ? '+' + (time / 1000).toFixed(3) + 'ms'
+                : '+' + (time / 1000000).toFixed(3) + 's';
+        }
+
+        printerr(
+            this.name_printer.getPainted(this.name),
+            this.message_printer.getPainted(message),
+            this.time_printer.getPainted(time)
+        );
+
+        this._lastDebug = GLib.get_monotonic_time();
+    }
+}

extras/ink/Ink.js

@@ -0,0 +1,322 @@
+const TERM_ESC = '\x1B[';
+const TERM_RESET = '0m';
+
+var maxTransparency = 128;
+
+var Font = {
+    VARIOUS: null,
+    REGULAR: 0,
+    BOLD: 1,
+    DIM: 2,
+    ITALIC: 3,
+    UNDERLINE: 4,
+    BLINK: 5,
+    REVERSE: 7,
+    HIDDEN: 8,
+    STRIKEOUT: 9,
+};
+
+var Color = {
+    VARIOUS: null,
+    DEFAULT: 39,
+    BLACK: 30,
+    RED: 31,
+    GREEN: 32,
+    YELLOW: 33,
+    BLUE: 34,
+    MAGENTA: 35,
+    CYAN: 36,
+    LIGHT_GRAY: 37,
+    DARK_GRAY: 90,
+    LIGHT_RED: 91,
+    LIGHT_GREEN: 92,
+    LIGHT_YELLOW: 93,
+    LIGHT_BLUE: 94,
+    LIGHT_MAGENTA: 95,
+    LIGHT_CYAN: 96,
+    WHITE: 97,
+    BROWN: colorFrom256(52),
+    LIGHT_BROWN: colorFrom256(130),
+    PINK: colorFrom256(205),
+    LIGHT_PINK: colorFrom256(211),
+    ORANGE: colorFrom256(208),
+    LIGHT_ORANGE: colorFrom256(214),
+    SALMON: colorFrom256(209),
+    LIGHT_SALMON: colorFrom256(216),
+};
+
+function colorFrom256(number)
+{
+    if(typeof number === 'undefined')
+        number = Math.floor(Math.random() * 256) + 1;
+
+    return `38;5;${number || 0}`;
+}
+
+function colorFromRGB(R, G, B, A)
+{
+    if(typeof R === 'undefined') {
+        R = Math.floor(Math.random() * 256);
+        G = Math.floor(Math.random() * 256);
+        B = Math.floor(Math.random() * 256);
+    }
+    else if(typeof G === 'undefined' && Array.isArray(R)) {
+        A = (R.length > 3) ? R[3] : 255;
+        B = (R.length > 2) ? R[2] : 0;
+        G = (R.length > 1) ? R[1] : 0;
+        R = (R.length > 0) ? R[0] : 0;
+    }
+
+    if(_getIsTransparent(A))
+        return Color.DEFAULT;
+
+    R = R || 0;
+    G = G || 0;
+    B = B || 0;
+
+    return `38;2;${R};${G};${B}`;
+}
+
+function colorFromHex(R, G, B, A)
+{
+    if((Array.isArray(R)))
+        R = R.join('');
+
+    let str = (typeof G === 'undefined')
+        ? String(R)
+        : (typeof A !== 'undefined')
+        ? String(R) + String(G) + String(B) + String(A)
+        : (typeof B !== 'undefined')
+        ? String(R) + String(G) + String(B)
+        : String(R) + String(G);
+
+    let offset = (str[0] === '#') ? 1 : 0;
+    let alphaIndex = 6 + offset;
+
+    while(str.length < alphaIndex)
+        str += '0';
+
+    A = (str.length > alphaIndex)
+        ? parseInt(str.substring(alphaIndex, alphaIndex + 2), 16)
+        : 255;
+    str = str.substring(offset, alphaIndex);
+
+    let colorInt = parseInt(str, 16);
+    let u8arr = new Uint8Array(3);
+
+    u8arr[2] = colorInt;
+    u8arr[1] = colorInt >> 8;
+    u8arr[0] = colorInt >> 16;
+
+    return colorFromRGB(u8arr[0], u8arr[1], u8arr[2], A);
+}
+
+function colorFromText(text)
+{
+    let value = _stringToDec(text);
+
+    /* Returns color from 1 to 221 every 10 */
+    return colorFrom256((value % 23) * 10 + 1);
+}
+
+function fontFromText(text)
+{
+    let arr = Object.keys(Font);
+    let value = _stringToDec(text);
+
+    /* Return a font excluding first (null) */
+    return Font[arr[value % (arr.length - 1) + 1]];
+}
+
+function _getIsImage(args)
+{
+    if(args.length !== 1)
+        return false;
+
+    let arg = args[0];
+    let argType = (typeof arg);
+
+    if(argType === 'string' || argType === 'number')
+        return false;
+
+    if(!Array.isArray(arg))
+        return false;
+
+    let depth = 2;
+    while(depth--) {
+        arg = arg[0];
+        if(!Array.isArray(arg))
+            return false;
+    }
+
+    return arg.some(val => val !== 'number');
+}
+
+function _getIsTransparent(A)
+{
+    return (typeof A !== 'undefined' && A <= maxTransparency);
+}
+
+function _stringToDec(str)
+{
+    str = str || '';
+
+    let len = str.length;
+    let total = 0;
+
+    while(len--)
+        total += Number(str.charCodeAt(len).toString(10));
+
+    return total;
+}
+
+var Printer = class
+{
+    constructor(opts)
+    {
+        opts = opts || {};
+
+        const defaults = {
+            font: Font.REGULAR,
+            color: Color.DEFAULT,
+            background: Color.DEFAULT
+        };
+
+        for(let def in defaults) {
+            this[def] = (typeof opts[def] !== 'undefined')
+                ? opts[def] : defaults[def];
+        }
+    }
+
+    print()
+    {
+        (_getIsImage(arguments))
+            ? this._printImage(arguments[0], 'stdout')
+            : print(this._getPaintedArgs(arguments));
+    }
+
+    printerr()
+    {
+        (_getIsImage(arguments))
+            ? this._printImage(arguments[0], 'stderr')
+            : printerr(this._getPaintedArgs(arguments));
+    }
+
+    getPainted()
+    {
+        return (_getIsImage(arguments))
+            ? this._printImage(arguments[0], 'return')
+            : this._getPaintedArgs(arguments);
+    }
+
+    get background()
+    {
+        return this._background;
+    }
+
+    set background(value)
+    {
+        let valueType = (typeof value);
+
+        if(valueType === 'string') {
+            value = (value[2] === ';')
+                ? '4' + value.substring(1)
+                : Number(value);
+        }
+        this._background = (valueType === 'object')
+            ? null
+            : (value < 40 || value >= 90 && value < 100)
+            ? value + 10
+            : value;
+    }
+
+    _getPaintedArgs(args)
+    {
+        let str = '';
+
+        for(let arg of args) {
+            if(Array.isArray(arg))
+                arg = arg.join(',');
+
+            let painted = this._getPaintedString(arg);
+            str += (str.length) ? ' ' + painted : painted;
+        }
+
+        return str;
+    }
+
+    _getPaintedString(text, noReset)
+    {
+        let str = TERM_ESC;
+
+        for(let option of ['font', 'color', '_background']) {
+            let optionType = (typeof this[option]);
+            str += (optionType === 'number' || optionType === 'string')
+                ? this[option]
+                : (option === 'font' && Array.isArray(this[option]))
+                ? this[option].join(';')
+                : (option === 'font')
+                ? fontFromText(text)
+                : colorFromText(text);
+
+            str += (option !== '_background') ? ';' : 'm';
+        }
+        str += text;
+
+        return (noReset)
+            ? str
+            : (str + TERM_ESC + TERM_RESET);
+    }
+
+    _printImage(pixelsArr, output)
+    {
+        let total = '';
+        let prevColor = this.color;
+        let prevBackground = this._background;
+
+        for(let row of pixelsArr) {
+            let paintedLine = '';
+            let block = '  ';
+
+            for(let i = 0; i < row.length; i++) {
+                let pixel = row[i];
+                let nextPixel = (i < row.length - 1) ? row[i + 1] : null;
+
+                if(nextPixel && pixel.every((value, index) =>
+                    value === nextPixel[index]
+                )) {
+                    block += '  ';
+                    continue;
+                }
+                /* Do not use predefined functions here (it would impact performance) */
+                let isTransparent = (pixel.length >= 3) ? _getIsTransparent(pixel[3]) : false;
+                this.color = (isTransparent)
+                    ? Color.DEFAULT
+                    : `38;2;${pixel[0]};${pixel[1]};${pixel[2]}`;
+                this._background = (isTransparent)
+                    ? Color.DEFAULT
+                    : `48;2;${pixel[0]};${pixel[1]};${pixel[2]}`;
+                paintedLine += `${TERM_ESC}0;${this.color};${this._background}m${block}`;
+                block = '  ';
+            }
+            paintedLine += TERM_ESC + TERM_RESET;
+
+            switch(output) {
+                case 'stderr':
+                    printerr(paintedLine);
+                    break;
+                case 'return':
+                    total += paintedLine + '\n';
+                    break;
+                default:
+                    print(paintedLine);
+                    break;
+            }
+        }
+
+        this.color = prevColor;
+        this._background = prevBackground;
+
+        return total;
+    }
+}

lib/gst/COPYING

@@ -55,7 +55,7 @@ modified by someone else and passed on, the recipients should know
 that what they have is not the original version, so that the original
 author's reputation will not be affected by problems that might be
 introduced by others.
-
+
   Finally, software patents pose a constant threat to the existence of
 any free program.  We wish to make sure that a company cannot
 effectively restrict the users of a free program by obtaining a
@@ -111,7 +111,7 @@ modification follow.  Pay close attention to the difference between a
 "work based on the library" and a "work that uses the library".  The
 former contains code derived from the library, whereas the latter must
 be combined with the library in order to run.
-
+
                   GNU LESSER GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
@@ -158,7 +158,7 @@ Library.
   You may charge a fee for the physical act of transferring a copy,
 and you may at your option offer warranty protection in exchange for a
 fee.
-
+
   2. You may modify your copy or copies of the Library or any portion
 of it, thus forming a work based on the Library, and copy and
 distribute such modifications or work under the terms of Section 1
@@ -216,7 +216,7 @@ instead of to this License.  (If a newer version than version 2 of the
 ordinary GNU General Public License has appeared, then you can specify
 that version instead if you wish.)  Do not make any other change in
 these notices.
-
+
   Once this change is made in a given copy, it is irreversible for
 that copy, so the ordinary GNU General Public License applies to all
 subsequent copies and derivative works made from that copy.
@@ -267,7 +267,7 @@ Library will still fall under Section 6.)
 distribute the object code for the work under the terms of Section 6.
 Any executables containing that work also fall under Section 6,
 whether or not they are linked directly with the Library itself.
-
+
   6. As an exception to the Sections above, you may also combine or
 link a "work that uses the Library" with the Library to produce a
 work containing portions of the Library, and distribute that work
@@ -329,7 +329,7 @@ restrictions of other proprietary libraries that do not normally
 accompany the operating system.  Such a contradiction means you cannot
 use both them and the Library together in an executable that you
 distribute.
-
+
   7. You may place library facilities that are a work based on the
 Library side-by-side in a single library together with other library
 facilities not covered by this License, and distribute such a combined
@@ -370,7 +370,7 @@ subject to these terms and conditions.  You may not impose any further
 restrictions on the recipients' exercise of the rights granted herein.
 You are not responsible for enforcing compliance by third parties with
 this License.
-
+
   11. If, as a consequence of a court judgment or allegation of patent
 infringement or for any other reason (not limited to patent issues),
 conditions are imposed on you (whether by court order, agreement or
@@ -422,7 +422,7 @@ conditions either of that version or of any later version published by
 the Free Software Foundation.  If the Library does not specify a
 license version number, you may choose any version ever published by
 the Free Software Foundation.
-
+
   14. If you wish to incorporate parts of the Library into other free
 programs whose distribution conditions are incompatible with these,
 write to the author to ask for permission.  For software which is
@@ -456,7 +456,7 @@ SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
 DAMAGES.
 
                      END OF TERMS AND CONDITIONS
-
+
            How to Apply These Terms to Your New Libraries
 
   If you develop a new library, and you want it to be of the greatest
@@ -485,8 +485,7 @@ convey the exclusion of warranty; and each file should have at least the
 
     You should have received a copy of the GNU Lesser General Public
     License along with this library; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
-    USA
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -495,8 +494,7 @@ school, if any, to sign a "copyright disclaimer" for the library, if
 necessary.  Here is a sample; alter the names:
 
   Yoyodyne, Inc., hereby disclaims all copyright interest in the
-  library `Frob' (a library for tweaking knobs) written by James Random
-  Hacker.
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
 
   <signature of Ty Coon>, 1 April 1990
   Ty Coon, President of Vice

lib/gst/clapper/clapper-prelude.h

@@ -0,0 +1,42 @@
+/* GStreamer
+ * Copyright (C) 2018 GStreamer developers
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_PRELUDE_H__
+#define __GST_CLAPPER_PRELUDE_H__
+
+#include <gst/gst.h>
+
+#ifndef GST_CLAPPER_API
+# ifdef BUILDING_GST_CLAPPER
+#  define GST_CLAPPER_API GST_API_EXPORT         /* from config.h */
+# else
+#  define GST_CLAPPER_API GST_API_IMPORT
+# endif
+#endif
+
+#ifndef GST_DISABLE_DEPRECATED
+#define GST_CLAPPER_DEPRECATED GST_CLAPPER_API
+#define GST_CLAPPER_DEPRECATED_FOR(f) GST_CLAPPER_API
+#else
+#define GST_CLAPPER_DEPRECATED G_DEPRECATED GST_CLAPPER_API
+#define GST_CLAPPER_DEPRECATED_FOR(f) G_DEPRECATED_FOR(f) GST_CLAPPER_API
+#endif
+
+#endif /* __GST_CLAPPER_PRELUDE_H__ */

lib/gst/clapper/clapper.h

@@ -0,0 +1,34 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __CLAPPER_H__
+#define __CLAPPER_H__
+
+#include <gst/clapper/clapper-prelude.h>
+#include <gst/clapper/gstclapper.h>
+#include <gst/clapper/gstclapper-media-info.h>
+#include <gst/clapper/gstclapper-g-main-context-signal-dispatcher.h>
+#include <gst/clapper/gstclapper-video-overlay-video-renderer.h>
+#include <gst/clapper/gstclapper-visualization.h>
+#include <gst/clapper/gstclapper-mpris.h>
+#include <gst/clapper/gstclapper-gtk4-plugin.h>
+
+#endif /* __CLAPPER_H__ */

lib/gst/clapper/gstclapper-g-main-context-signal-dispatcher.c

@@ -0,0 +1,214 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:gstclapper-gmaincontextsignaldispatcher
+ * @title: GstClapperGMainContextSignalDispatcher
+ * @short_description: Clapper GLib MainContext dispatcher
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-g-main-context-signal-dispatcher.h"
+
+struct _GstClapperGMainContextSignalDispatcher
+{
+  GObject parent;
+  GMainContext *application_context;
+};
+
+struct _GstClapperGMainContextSignalDispatcherClass
+{
+  GObjectClass parent_class;
+};
+
+static void
+    gst_clapper_g_main_context_signal_dispatcher_interface_init
+    (GstClapperSignalDispatcherInterface * iface);
+
+enum
+{
+  G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_0,
+  G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_APPLICATION_CONTEXT,
+  G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_LAST
+};
+
+G_DEFINE_TYPE_WITH_CODE (GstClapperGMainContextSignalDispatcher,
+    gst_clapper_g_main_context_signal_dispatcher, G_TYPE_OBJECT,
+    G_IMPLEMENT_INTERFACE (GST_TYPE_CLAPPER_SIGNAL_DISPATCHER,
+        gst_clapper_g_main_context_signal_dispatcher_interface_init));
+
+static GParamSpec
+    * g_main_context_signal_dispatcher_param_specs
+    [G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_LAST] = { NULL, };
+
+static void
+gst_clapper_g_main_context_signal_dispatcher_finalize (GObject * object)
+{
+  GstClapperGMainContextSignalDispatcher *self =
+      GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER (object);
+
+  if (self->application_context)
+    g_main_context_unref (self->application_context);
+
+  G_OBJECT_CLASS
+      (gst_clapper_g_main_context_signal_dispatcher_parent_class)->finalize
+      (object);
+}
+
+static void
+gst_clapper_g_main_context_signal_dispatcher_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+  GstClapperGMainContextSignalDispatcher *self =
+      GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER (object);
+
+  switch (prop_id) {
+    case G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_APPLICATION_CONTEXT:
+      self->application_context = g_value_dup_boxed (value);
+      if (!self->application_context)
+        self->application_context = g_main_context_ref_thread_default ();
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_g_main_context_signal_dispatcher_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec)
+{
+  GstClapperGMainContextSignalDispatcher *self =
+      GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER (object);
+
+  switch (prop_id) {
+    case G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_APPLICATION_CONTEXT:
+      g_value_set_boxed (value, self->application_context);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+    gst_clapper_g_main_context_signal_dispatcher_class_init
+    (GstClapperGMainContextSignalDispatcherClass * klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  gobject_class->finalize =
+      gst_clapper_g_main_context_signal_dispatcher_finalize;
+  gobject_class->set_property =
+      gst_clapper_g_main_context_signal_dispatcher_set_property;
+  gobject_class->get_property =
+      gst_clapper_g_main_context_signal_dispatcher_get_property;
+
+  g_main_context_signal_dispatcher_param_specs
+      [G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_APPLICATION_CONTEXT] =
+      g_param_spec_boxed ("application-context", "Application Context",
+      "Application GMainContext to dispatch signals to", G_TYPE_MAIN_CONTEXT,
+      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (gobject_class,
+      G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_LAST,
+      g_main_context_signal_dispatcher_param_specs);
+}
+
+static void
+    gst_clapper_g_main_context_signal_dispatcher_init
+    (G_GNUC_UNUSED GstClapperGMainContextSignalDispatcher * self)
+{
+}
+
+typedef struct
+{
+  void (*emitter) (gpointer data);
+  gpointer data;
+  GDestroyNotify destroy;
+} GMainContextSignalDispatcherData;
+
+static gboolean
+g_main_context_signal_dispatcher_dispatch_gsourcefunc (gpointer user_data)
+{
+  GMainContextSignalDispatcherData *data = user_data;
+
+  data->emitter (data->data);
+
+  return G_SOURCE_REMOVE;
+}
+
+static void
+g_main_context_signal_dispatcher_dispatch_destroy (gpointer user_data)
+{
+  GMainContextSignalDispatcherData *data = user_data;
+
+  if (data->destroy)
+    data->destroy (data->data);
+  g_free (data);
+}
+
+static void
+gst_clapper_g_main_context_signal_dispatcher_dispatch (GstClapperSignalDispatcher
+    * iface, G_GNUC_UNUSED GstClapper * clapper, void (*emitter) (gpointer data),
+    gpointer data, GDestroyNotify destroy)
+{
+  GstClapperGMainContextSignalDispatcher *self =
+      GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER (iface);
+  GMainContextSignalDispatcherData *gsourcefunc_data =
+      g_new (GMainContextSignalDispatcherData, 1);
+
+  gsourcefunc_data->emitter = emitter;
+  gsourcefunc_data->data = data;
+  gsourcefunc_data->destroy = destroy;
+
+  g_main_context_invoke_full (self->application_context,
+      G_PRIORITY_DEFAULT, g_main_context_signal_dispatcher_dispatch_gsourcefunc,
+      gsourcefunc_data, g_main_context_signal_dispatcher_dispatch_destroy);
+}
+
+static void
+    gst_clapper_g_main_context_signal_dispatcher_interface_init
+    (GstClapperSignalDispatcherInterface * iface)
+{
+  iface->dispatch = gst_clapper_g_main_context_signal_dispatcher_dispatch;
+}
+
+/**
+ * gst_clapper_g_main_context_signal_dispatcher_new:
+ * @application_context: (allow-none): GMainContext to use or %NULL
+ *
+ * Creates a new GstClapperSignalDispatcher that uses @application_context,
+ * or the thread default one if %NULL is used. See gst_clapper_new().
+ *
+ * Returns: (transfer full): the new GstClapperSignalDispatcher
+ */
+GstClapperSignalDispatcher *
+gst_clapper_g_main_context_signal_dispatcher_new (GMainContext *
+    application_context)
+{
+  return g_object_new (GST_TYPE_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER,
+      "application-context", application_context, NULL);
+}

lib/gst/clapper/gstclapper-g-main-context-signal-dispatcher.h

@@ -0,0 +1,51 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER_H__
+#define __GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER_H__
+
+#include <gst/clapper/gstclapper-types.h>
+#include <gst/clapper/gstclapper-signal-dispatcher.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstClapperGMainContextSignalDispatcher
+    GstClapperGMainContextSignalDispatcher;
+typedef struct _GstClapperGMainContextSignalDispatcherClass
+    GstClapperGMainContextSignalDispatcherClass;
+
+#define GST_TYPE_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER             (gst_clapper_g_main_context_signal_dispatcher_get_type ())
+#define GST_IS_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER))
+#define GST_IS_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER))
+#define GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER, GstClapperGMainContextSignalDispatcherClass))
+#define GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER, GstClapperGMainContextSignalDispatcher))
+#define GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER, GstClapperGMainContextSignalDispatcherClass))
+#define GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER_CAST(obj)        ((GstClapperGMainContextSignalDispatcher*)(obj))
+
+GST_CLAPPER_API
+GType gst_clapper_g_main_context_signal_dispatcher_get_type (void);
+
+GST_CLAPPER_API
+GstClapperSignalDispatcher * gst_clapper_g_main_context_signal_dispatcher_new (GMainContext * application_context);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER_H__ */

lib/gst/clapper/gstclapper-gtk4-plugin.c

@@ -0,0 +1,123 @@
+/* GStreamer
+ *
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:gstclapper-gtk4plugin
+ * @title: GstClapperGtk4Plugin
+ * @short_description: Clapper GTK4 plugin
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-gtk4-plugin.h"
+#include "gtk4/gstclapperglsink.h"
+
+enum
+{
+  PROP_0,
+  PROP_VIDEO_SINK,
+  PROP_LAST
+};
+
+#define parent_class gst_clapper_gtk4_plugin_parent_class
+G_DEFINE_TYPE_WITH_CODE (GstClapperGtk4Plugin, gst_clapper_gtk4_plugin,
+    G_TYPE_OBJECT, NULL);
+
+static GParamSpec *param_specs[PROP_LAST] = { NULL, };
+
+static void gst_clapper_gtk4_plugin_constructed (GObject * object);
+static void gst_clapper_gtk4_plugin_finalize (GObject * object);
+static void gst_clapper_gtk4_plugin_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static void gst_clapper_gtk4_plugin_init
+    (G_GNUC_UNUSED GstClapperGtk4Plugin * self)
+{
+}
+
+static void gst_clapper_gtk4_plugin_class_init
+    (G_GNUC_UNUSED GstClapperGtk4PluginClass * klass)
+{
+  GObjectClass *gobject_class = (GObjectClass *) klass;
+
+  gobject_class->constructed = gst_clapper_gtk4_plugin_constructed;
+  gobject_class->get_property = gst_clapper_gtk4_plugin_get_property;
+  gobject_class->finalize = gst_clapper_gtk4_plugin_finalize;
+
+  param_specs[PROP_VIDEO_SINK] =
+      g_param_spec_object ("video-sink",
+      "Video Sink", "Video sink to use with video renderer",
+      GST_TYPE_ELEMENT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (gobject_class, PROP_LAST, param_specs);
+}
+
+static void
+gst_clapper_gtk4_plugin_constructed (GObject * object)
+{
+  GstClapperGtk4Plugin *self = GST_CLAPPER_GTK4_PLUGIN (object);
+
+  self->video_sink = g_object_new (GST_TYPE_CLAPPER_GL_SINK, NULL);
+  gst_object_ref_sink (self->video_sink);
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+}
+
+static void
+gst_clapper_gtk4_plugin_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstClapperGtk4Plugin *self = GST_CLAPPER_GTK4_PLUGIN (object);
+
+  switch (prop_id) {
+    case PROP_VIDEO_SINK:
+      g_value_set_object (value, self->video_sink);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_gtk4_plugin_finalize (GObject * object)
+{
+  GstClapperGtk4Plugin *self = GST_CLAPPER_GTK4_PLUGIN (object);
+
+  gst_object_unref (self->video_sink);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+/**
+ * gst_clapper_gtk4_plugin_new:
+ *
+ * Creates a new GTK4 plugin.
+ *
+ * Returns: (transfer full): the new GstClapperGtk4Plugin
+ */
+GstClapperGtk4Plugin *
+gst_clapper_gtk4_plugin_new (void)
+{
+  return g_object_new (GST_TYPE_CLAPPER_GTK4_PLUGIN, NULL);
+}

lib/gst/clapper/gstclapper-gtk4-plugin.h

@@ -0,0 +1,72 @@
+/* GStreamer
+ *
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_GTK4_PLUGIN_H__
+#define __GST_CLAPPER_GTK4_PLUGIN_H__
+
+#include <gst/gst.h>
+#include <gst/clapper/clapper-prelude.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CLAPPER_GTK4_PLUGIN             (gst_clapper_gtk4_plugin_get_type ())
+#define GST_IS_CLAPPER_GTK4_PLUGIN(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CLAPPER_GTK4_PLUGIN))
+#define GST_IS_CLAPPER_GTK4_PLUGIN_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_CLAPPER_GTK4_PLUGIN))
+#define GST_CLAPPER_GTK4_PLUGIN_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CLAPPER_GTK4_PLUGIN, GstClapperGtk4PluginClass))
+#define GST_CLAPPER_GTK4_PLUGIN(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CLAPPER_GTK4_PLUGIN, GstClapperGtk4Plugin))
+#define GST_CLAPPER_GTK4_PLUGIN_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_CLAPPER_GTK4_PLUGIN, GstClapperGtk4PluginClass))
+#define GST_CLAPPER_GTK4_PLUGIN_CAST(obj)        ((GstClapperGtk4Plugin*)(obj))
+
+typedef struct _GstClapperGtk4Plugin GstClapperGtk4Plugin;
+typedef struct _GstClapperGtk4PluginClass GstClapperGtk4PluginClass;
+
+/**
+ * GstClapperGtk4Plugin:
+ *
+ * Opaque #GstClapperGtk4Plugin object
+ */
+struct _GstClapperGtk4Plugin
+{
+  /* <private> */
+  GObject parent;
+
+  GstElement *video_sink;
+};
+
+/**
+ * GstClapperGtk4PluginClass:
+ *
+ * The #GstClapperGtk4PluginClass struct only contains private data
+ */
+struct _GstClapperGtk4PluginClass
+{
+  /* <private> */
+  GstElementClass parent_class;
+};
+
+GST_CLAPPER_API
+GType gst_clapper_gtk4_plugin_get_type             (void);
+
+GST_CLAPPER_API
+GstClapperGtk4Plugin * gst_clapper_gtk4_plugin_new (void);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_GTK4_PLUGIN__ */

lib/gst/clapper/gstclapper-media-info-private.h

@@ -0,0 +1,125 @@
+/* GStreamer
+ *
+ * Copyright (C) 2015 Brijesh Singh <brijesh.ksingh@gmail.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "gstclapper-media-info.h"
+
+#ifndef __GST_CLAPPER_MEDIA_INFO_PRIVATE_H__
+#define __GST_CLAPPER_MEDIA_INFO_PRIVATE_H__
+
+struct _GstClapperStreamInfo
+{
+  GObject parent;
+
+  gchar *codec;
+
+  GstCaps *caps;
+  gint stream_index;
+  GstTagList  *tags;
+  gchar *stream_id;
+};
+
+struct _GstClapperStreamInfoClass
+{
+  GObjectClass parent_class;
+};
+
+struct _GstClapperSubtitleInfo
+{
+  GstClapperStreamInfo  parent;
+
+  gchar *title;
+  gchar *language;
+};
+
+struct _GstClapperSubtitleInfoClass
+{
+  GstClapperStreamInfoClass parent_class;
+};
+
+struct _GstClapperAudioInfo
+{
+  GstClapperStreamInfo  parent;
+
+  gint channels;
+  gint sample_rate;
+
+  guint bitrate;
+  guint max_bitrate;
+
+  gchar *language;
+};
+
+struct _GstClapperAudioInfoClass
+{
+  GstClapperStreamInfoClass parent_class;
+};
+
+struct _GstClapperVideoInfo
+{
+  GstClapperStreamInfo  parent;
+
+  gint width;
+  gint height;
+  gint framerate_num;
+  gint framerate_denom;
+  gint par_num;
+  gint par_denom;
+
+  guint bitrate;
+  guint max_bitrate;
+};
+
+struct _GstClapperVideoInfoClass
+{
+  GstClapperStreamInfoClass parent_class;
+};
+
+struct _GstClapperMediaInfo
+{
+  GObject parent;
+
+  gchar *uri;
+  gchar *title;
+  gchar *container;
+  gboolean seekable, is_live;
+  GstTagList *tags;
+  GstToc *toc;
+  GstSample *image_sample;
+
+  GList *stream_list;
+  GList *audio_stream_list;
+  GList *video_stream_list;
+  GList *subtitle_stream_list;
+
+  GstClockTime duration;
+};
+
+struct _GstClapperMediaInfoClass
+{
+  GObjectClass parent_class;
+};
+
+G_GNUC_INTERNAL GstClapperMediaInfo *   gst_clapper_media_info_new  (const gchar *uri);
+G_GNUC_INTERNAL GstClapperMediaInfo *   gst_clapper_media_info_copy  (GstClapperMediaInfo *ref);
+G_GNUC_INTERNAL GstClapperStreamInfo *  gst_clapper_stream_info_new  (gint stream_index, GType type);
+G_GNUC_INTERNAL GstClapperStreamInfo *  gst_clapper_stream_info_copy (GstClapperStreamInfo *ref);
+
+#endif /* __GST_CLAPPER_MEDIA_INFO_PRIVATE_H__ */

lib/gst/clapper/gstclapper-media-info.c

@@ -0,0 +1,885 @@
+/* GStreamer
+ *
+ * Copyright (C) 2015 Brijesh Singh <brijesh.ksingh@gmail.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:gstclapper-mediainfo
+ * @title: GstClapperMediaInfo
+ * @short_description: Clapper Media Information
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-media-info.h"
+#include "gstclapper-media-info-private.h"
+
+/* Per-stream information */
+G_DEFINE_ABSTRACT_TYPE (GstClapperStreamInfo, gst_clapper_stream_info,
+    G_TYPE_OBJECT);
+
+static void
+gst_clapper_stream_info_init (GstClapperStreamInfo * sinfo)
+{
+  sinfo->stream_index = -1;
+}
+
+static void
+gst_clapper_stream_info_finalize (GObject * object)
+{
+  GstClapperStreamInfo *sinfo = GST_CLAPPER_STREAM_INFO (object);
+
+  g_free (sinfo->codec);
+  g_free (sinfo->stream_id);
+
+  if (sinfo->caps)
+    gst_caps_unref (sinfo->caps);
+
+  if (sinfo->tags)
+    gst_tag_list_unref (sinfo->tags);
+
+  G_OBJECT_CLASS (gst_clapper_stream_info_parent_class)->finalize (object);
+}
+
+static void
+gst_clapper_stream_info_class_init (GstClapperStreamInfoClass * klass)
+{
+  GObjectClass *gobject_class = (GObjectClass *) klass;
+
+  gobject_class->finalize = gst_clapper_stream_info_finalize;
+}
+
+/**
+ * gst_clapper_stream_info_get_index:
+ * @info: a #GstClapperStreamInfo
+ *
+ * Function to get stream index from #GstClapperStreamInfo instance.
+ *
+ * Returns: the stream index of this stream.
+ */
+gint
+gst_clapper_stream_info_get_index (const GstClapperStreamInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_STREAM_INFO (info), -1);
+
+  return info->stream_index;
+}
+
+/**
+ * gst_clapper_stream_info_get_stream_type:
+ * @info: a #GstClapperStreamInfo
+ *
+ * Function to return human readable name for the stream type
+ * of the given @info (ex: "audio", "video", "subtitle")
+ *
+ * Returns: a human readable name
+ */
+const gchar *
+gst_clapper_stream_info_get_stream_type (const GstClapperStreamInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_STREAM_INFO (info), NULL);
+
+  if (GST_IS_CLAPPER_VIDEO_INFO (info))
+    return "video";
+  else if (GST_IS_CLAPPER_AUDIO_INFO (info))
+    return "audio";
+  else
+    return "subtitle";
+}
+
+/**
+ * gst_clapper_stream_info_get_tags:
+ * @info: a #GstClapperStreamInfo
+ *
+ * Returns: (transfer none): the tags contained in this stream.
+ */
+GstTagList *
+gst_clapper_stream_info_get_tags (const GstClapperStreamInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_STREAM_INFO (info), NULL);
+
+  return info->tags;
+}
+
+/**
+ * gst_clapper_stream_info_get_codec:
+ * @info: a #GstClapperStreamInfo
+ *
+ * A string describing codec used in #GstClapperStreamInfo.
+ *
+ * Returns: codec string or NULL on unknown.
+ */
+const gchar *
+gst_clapper_stream_info_get_codec (const GstClapperStreamInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_STREAM_INFO (info), NULL);
+
+  return info->codec;
+}
+
+/**
+ * gst_clapper_stream_info_get_caps:
+ * @info: a #GstClapperStreamInfo
+ *
+ * Returns: (transfer none): the #GstCaps of the stream.
+ */
+GstCaps *
+gst_clapper_stream_info_get_caps (const GstClapperStreamInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_STREAM_INFO (info), NULL);
+
+  return info->caps;
+}
+
+/* Video information */
+G_DEFINE_TYPE (GstClapperVideoInfo, gst_clapper_video_info,
+    GST_TYPE_CLAPPER_STREAM_INFO);
+
+static void
+gst_clapper_video_info_init (GstClapperVideoInfo * info)
+{
+  info->width = -1;
+  info->height = -1;
+  info->framerate_num = 0;
+  info->framerate_denom = 1;
+  info->par_num = 1;
+  info->par_denom = 1;
+}
+
+static void
+gst_clapper_video_info_class_init (G_GNUC_UNUSED GstClapperVideoInfoClass * klass)
+{
+  /* nothing to do here */
+}
+
+/**
+ * gst_clapper_video_info_get_width:
+ * @info: a #GstClapperVideoInfo
+ *
+ * Returns: the width of video in #GstClapperVideoInfo.
+ */
+gint
+gst_clapper_video_info_get_width (const GstClapperVideoInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_VIDEO_INFO (info), -1);
+
+  return info->width;
+}
+
+/**
+ * gst_clapper_video_info_get_height:
+ * @info: a #GstClapperVideoInfo
+ *
+ * Returns: the height of video in #GstClapperVideoInfo.
+ */
+gint
+gst_clapper_video_info_get_height (const GstClapperVideoInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_VIDEO_INFO (info), -1);
+
+  return info->height;
+}
+
+/**
+ * gst_clapper_video_info_get_framerate:
+ * @info: a #GstClapperVideoInfo
+ * @fps_n: (out): Numerator of frame rate
+ * @fps_d: (out): Denominator of frame rate
+ *
+ */
+void
+gst_clapper_video_info_get_framerate (const GstClapperVideoInfo * info,
+    gint * fps_n, gint * fps_d)
+{
+  g_return_if_fail (GST_IS_CLAPPER_VIDEO_INFO (info));
+
+  *fps_n = info->framerate_num;
+  *fps_d = info->framerate_denom;
+}
+
+/**
+ * gst_clapper_video_info_get_pixel_aspect_ratio:
+ * @info: a #GstClapperVideoInfo
+ * @par_n: (out): numerator
+ * @par_d: (out): denominator
+ *
+ * Returns the pixel aspect ratio in @par_n and @par_d
+ *
+ */
+void
+gst_clapper_video_info_get_pixel_aspect_ratio (const GstClapperVideoInfo * info,
+    guint * par_n, guint * par_d)
+{
+  g_return_if_fail (GST_IS_CLAPPER_VIDEO_INFO (info));
+
+  *par_n = info->par_num;
+  *par_d = info->par_denom;
+}
+
+/**
+ * gst_clapper_video_info_get_bitrate:
+ * @info: a #GstClapperVideoInfo
+ *
+ * Returns: the current bitrate of video in #GstClapperVideoInfo.
+ */
+gint
+gst_clapper_video_info_get_bitrate (const GstClapperVideoInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_VIDEO_INFO (info), -1);
+
+  return info->bitrate;
+}
+
+/**
+ * gst_clapper_video_info_get_max_bitrate:
+ * @info: a #GstClapperVideoInfo
+ *
+ * Returns: the maximum bitrate of video in #GstClapperVideoInfo.
+ */
+gint
+gst_clapper_video_info_get_max_bitrate (const GstClapperVideoInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_VIDEO_INFO (info), -1);
+
+  return info->max_bitrate;
+}
+
+/* Audio information */
+G_DEFINE_TYPE (GstClapperAudioInfo, gst_clapper_audio_info,
+    GST_TYPE_CLAPPER_STREAM_INFO);
+
+static void
+gst_clapper_audio_info_init (GstClapperAudioInfo * info)
+{
+  info->channels = 0;
+  info->sample_rate = 0;
+  info->bitrate = -1;
+  info->max_bitrate = -1;
+}
+
+static void
+gst_clapper_audio_info_finalize (GObject * object)
+{
+  GstClapperAudioInfo *info = GST_CLAPPER_AUDIO_INFO (object);
+
+  g_free (info->language);
+
+  G_OBJECT_CLASS (gst_clapper_audio_info_parent_class)->finalize (object);
+}
+
+static void
+gst_clapper_audio_info_class_init (GstClapperAudioInfoClass * klass)
+{
+  GObjectClass *gobject_class = (GObjectClass *) klass;
+
+  gobject_class->finalize = gst_clapper_audio_info_finalize;
+}
+
+/**
+ * gst_clapper_audio_info_get_language:
+ * @info: a #GstClapperAudioInfo
+ *
+ * Returns: the language of the stream, or NULL if unknown.
+ */
+const gchar *
+gst_clapper_audio_info_get_language (const GstClapperAudioInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_AUDIO_INFO (info), NULL);
+
+  return info->language;
+}
+
+/**
+ * gst_clapper_audio_info_get_channels:
+ * @info: a #GstClapperAudioInfo
+ *
+ * Returns: the number of audio channels in #GstClapperAudioInfo.
+ */
+gint
+gst_clapper_audio_info_get_channels (const GstClapperAudioInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_AUDIO_INFO (info), 0);
+
+  return info->channels;
+}
+
+/**
+ * gst_clapper_audio_info_get_sample_rate:
+ * @info: a #GstClapperAudioInfo
+ *
+ * Returns: the audio sample rate in #GstClapperAudioInfo.
+ */
+gint
+gst_clapper_audio_info_get_sample_rate (const GstClapperAudioInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_AUDIO_INFO (info), 0);
+
+  return info->sample_rate;
+}
+
+/**
+ * gst_clapper_audio_info_get_bitrate:
+ * @info: a #GstClapperAudioInfo
+ *
+ * Returns: the audio bitrate in #GstClapperAudioInfo.
+ */
+gint
+gst_clapper_audio_info_get_bitrate (const GstClapperAudioInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_AUDIO_INFO (info), -1);
+
+  return info->bitrate;
+}
+
+/**
+ * gst_clapper_audio_info_get_max_bitrate:
+ * @info: a #GstClapperAudioInfo
+ *
+ * Returns: the audio maximum bitrate in #GstClapperAudioInfo.
+ */
+gint
+gst_clapper_audio_info_get_max_bitrate (const GstClapperAudioInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_AUDIO_INFO (info), -1);
+
+  return info->max_bitrate;
+}
+
+/* Subtitle information */
+G_DEFINE_TYPE (GstClapperSubtitleInfo, gst_clapper_subtitle_info,
+    GST_TYPE_CLAPPER_STREAM_INFO);
+
+static void
+gst_clapper_subtitle_info_init (G_GNUC_UNUSED GstClapperSubtitleInfo * info)
+{
+  /* nothing to do */
+}
+
+static void
+gst_clapper_subtitle_info_finalize (GObject * object)
+{
+  GstClapperSubtitleInfo *info = GST_CLAPPER_SUBTITLE_INFO (object);
+
+  g_free (info->title);
+  g_free (info->language);
+
+  G_OBJECT_CLASS (gst_clapper_subtitle_info_parent_class)->finalize (object);
+}
+
+static void
+gst_clapper_subtitle_info_class_init (GstClapperSubtitleInfoClass * klass)
+{
+  GObjectClass *gobject_class = (GObjectClass *) klass;
+
+  gobject_class->finalize = gst_clapper_subtitle_info_finalize;
+}
+
+/**
+ * gst_clapper_subtitle_info_get_title:
+ * @info: a #GstClapperSubtitleInfo
+ *
+ * Returns: the title of the stream, or NULL if unknown.
+ */
+const gchar *
+gst_clapper_subtitle_info_get_title (const GstClapperSubtitleInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_SUBTITLE_INFO (info), NULL);
+
+  return info->title;
+}
+
+/**
+ * gst_clapper_subtitle_info_get_language:
+ * @info: a #GstClapperSubtitleInfo
+ *
+ * Returns: the language of the stream, or NULL if unknown.
+ */
+const gchar *
+gst_clapper_subtitle_info_get_language (const GstClapperSubtitleInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_SUBTITLE_INFO (info), NULL);
+
+  return info->language;
+}
+
+/* Global media information */
+G_DEFINE_TYPE (GstClapperMediaInfo, gst_clapper_media_info, G_TYPE_OBJECT);
+
+static void
+gst_clapper_media_info_init (GstClapperMediaInfo * info)
+{
+  info->duration = -1;
+  info->is_live = FALSE;
+  info->seekable = FALSE;
+}
+
+static void
+gst_clapper_media_info_finalize (GObject * object)
+{
+  GstClapperMediaInfo *info = GST_CLAPPER_MEDIA_INFO (object);
+
+  g_free (info->uri);
+  g_free (info->title);
+  g_free (info->container);
+
+  if (info->tags)
+    gst_tag_list_unref (info->tags);
+  if (info->toc)
+    gst_toc_unref (info->toc);
+  if (info->image_sample)
+    gst_sample_unref (info->image_sample);
+  if (info->audio_stream_list)
+    g_list_free (info->audio_stream_list);
+  if (info->video_stream_list)
+    g_list_free (info->video_stream_list);
+  if (info->subtitle_stream_list)
+    g_list_free (info->subtitle_stream_list);
+  if (info->stream_list)
+    g_list_free_full (info->stream_list, g_object_unref);
+
+  G_OBJECT_CLASS (gst_clapper_media_info_parent_class)->finalize (object);
+}
+
+static void
+gst_clapper_media_info_class_init (GstClapperMediaInfoClass * klass)
+{
+  GObjectClass *oclass = (GObjectClass *) klass;
+
+  oclass->finalize = gst_clapper_media_info_finalize;
+}
+
+static GstClapperVideoInfo *
+gst_clapper_video_info_new (void)
+{
+  return g_object_new (GST_TYPE_CLAPPER_VIDEO_INFO, NULL);
+}
+
+static GstClapperAudioInfo *
+gst_clapper_audio_info_new (void)
+{
+  return g_object_new (GST_TYPE_CLAPPER_AUDIO_INFO, NULL);
+}
+
+static GstClapperSubtitleInfo *
+gst_clapper_subtitle_info_new (void)
+{
+  return g_object_new (GST_TYPE_CLAPPER_SUBTITLE_INFO, NULL);
+}
+
+static GstClapperStreamInfo *
+gst_clapper_video_info_copy (GstClapperVideoInfo * ref)
+{
+  GstClapperVideoInfo *ret;
+
+  ret = gst_clapper_video_info_new ();
+
+  ret->width = ref->width;
+  ret->height = ref->height;
+  ret->framerate_num = ref->framerate_num;
+  ret->framerate_denom = ref->framerate_denom;
+  ret->par_num = ref->par_num;
+  ret->par_denom = ref->par_denom;
+  ret->bitrate = ref->bitrate;
+  ret->max_bitrate = ref->max_bitrate;
+
+  return (GstClapperStreamInfo *) ret;
+}
+
+static GstClapperStreamInfo *
+gst_clapper_audio_info_copy (GstClapperAudioInfo * ref)
+{
+  GstClapperAudioInfo *ret;
+
+  ret = gst_clapper_audio_info_new ();
+
+  ret->sample_rate = ref->sample_rate;
+  ret->channels = ref->channels;
+  ret->bitrate = ref->bitrate;
+  ret->max_bitrate = ref->max_bitrate;
+
+  if (ref->language)
+    ret->language = g_strdup (ref->language);
+
+  return (GstClapperStreamInfo *) ret;
+}
+
+static GstClapperStreamInfo *
+gst_clapper_subtitle_info_copy (GstClapperSubtitleInfo * ref)
+{
+  GstClapperSubtitleInfo *ret;
+
+  ret = gst_clapper_subtitle_info_new ();
+  if (ref->title)
+    ret->title = g_strdup (ref->title);
+  if (ref->language)
+    ret->language = g_strdup (ref->language);
+
+  return (GstClapperStreamInfo *) ret;
+}
+
+GstClapperStreamInfo *
+gst_clapper_stream_info_copy (GstClapperStreamInfo * ref)
+{
+  GstClapperStreamInfo *info = NULL;
+
+  if (!ref)
+    return NULL;
+
+  if (GST_IS_CLAPPER_VIDEO_INFO (ref))
+    info = gst_clapper_video_info_copy ((GstClapperVideoInfo *) ref);
+  else if (GST_IS_CLAPPER_AUDIO_INFO (ref))
+    info = gst_clapper_audio_info_copy ((GstClapperAudioInfo *) ref);
+  else
+    info = gst_clapper_subtitle_info_copy ((GstClapperSubtitleInfo *) ref);
+
+  info->stream_index = ref->stream_index;
+  if (ref->tags)
+    info->tags = gst_tag_list_ref (ref->tags);
+  if (ref->caps)
+    info->caps = gst_caps_copy (ref->caps);
+  if (ref->codec)
+    info->codec = g_strdup (ref->codec);
+  if (ref->stream_id)
+    info->stream_id = g_strdup (ref->stream_id);
+
+  return info;
+}
+
+GstClapperMediaInfo *
+gst_clapper_media_info_copy (GstClapperMediaInfo * ref)
+{
+  GList *l;
+  GstClapperMediaInfo *info;
+
+  if (!ref)
+    return NULL;
+
+  info = gst_clapper_media_info_new (ref->uri);
+  info->duration = ref->duration;
+  info->seekable = ref->seekable;
+  info->is_live = ref->is_live;
+  if (ref->tags)
+    info->tags = gst_tag_list_ref (ref->tags);
+  if (ref->toc)
+    info->toc = gst_toc_ref (ref->toc);
+  if (ref->title)
+    info->title = g_strdup (ref->title);
+  if (ref->container)
+    info->container = g_strdup (ref->container);
+  if (ref->image_sample)
+    info->image_sample = gst_sample_ref (ref->image_sample);
+
+  for (l = ref->stream_list; l != NULL; l = l->next) {
+    GstClapperStreamInfo *s;
+
+    s = gst_clapper_stream_info_copy ((GstClapperStreamInfo *) l->data);
+    info->stream_list = g_list_append (info->stream_list, s);
+
+    if (GST_IS_CLAPPER_AUDIO_INFO (s))
+      info->audio_stream_list = g_list_append (info->audio_stream_list, s);
+    else if (GST_IS_CLAPPER_VIDEO_INFO (s))
+      info->video_stream_list = g_list_append (info->video_stream_list, s);
+    else
+      info->subtitle_stream_list =
+          g_list_append (info->subtitle_stream_list, s);
+  }
+
+  return info;
+}
+
+GstClapperStreamInfo *
+gst_clapper_stream_info_new (gint stream_index, GType type)
+{
+  GstClapperStreamInfo *info = NULL;
+
+  if (type == GST_TYPE_CLAPPER_AUDIO_INFO)
+    info = (GstClapperStreamInfo *) gst_clapper_audio_info_new ();
+  else if (type == GST_TYPE_CLAPPER_VIDEO_INFO)
+    info = (GstClapperStreamInfo *) gst_clapper_video_info_new ();
+  else
+    info = (GstClapperStreamInfo *) gst_clapper_subtitle_info_new ();
+
+  info->stream_index = stream_index;
+
+  return info;
+}
+
+GstClapperMediaInfo *
+gst_clapper_media_info_new (const gchar * uri)
+{
+  GstClapperMediaInfo *info;
+
+  g_return_val_if_fail (uri != NULL, NULL);
+
+  info = g_object_new (GST_TYPE_CLAPPER_MEDIA_INFO, NULL);
+  info->uri = g_strdup (uri);
+
+  return info;
+}
+
+/**
+ * gst_clapper_media_info_get_uri:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: the URI associated with #GstClapperMediaInfo.
+ */
+const gchar *
+gst_clapper_media_info_get_uri (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->uri;
+}
+
+/**
+ * gst_clapper_media_info_is_seekable:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: %TRUE if the media is seekable.
+ */
+gboolean
+gst_clapper_media_info_is_seekable (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), FALSE);
+
+  return info->seekable;
+}
+
+/**
+ * gst_clapper_media_info_is_live:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: %TRUE if the media is live.
+ */
+gboolean
+gst_clapper_media_info_is_live (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), FALSE);
+
+  return info->is_live;
+}
+
+/**
+ * gst_clapper_media_info_get_stream_list:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: (transfer none) (element-type GstClapperStreamInfo): A #GList of
+ * matching #GstClapperStreamInfo.
+ */
+GList *
+gst_clapper_media_info_get_stream_list (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->stream_list;
+}
+
+/**
+ * gst_clapper_media_info_get_video_streams:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: (transfer none) (element-type GstClapperVideoInfo): A #GList of
+ * matching #GstClapperVideoInfo.
+ */
+GList *
+gst_clapper_media_info_get_video_streams (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->video_stream_list;
+}
+
+/**
+ * gst_clapper_media_info_get_subtitle_streams:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: (transfer none) (element-type GstClapperSubtitleInfo): A #GList of
+ * matching #GstClapperSubtitleInfo.
+ */
+GList *
+gst_clapper_media_info_get_subtitle_streams (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->subtitle_stream_list;
+}
+
+/**
+ * gst_clapper_media_info_get_audio_streams:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: (transfer none) (element-type GstClapperAudioInfo): A #GList of
+ * matching #GstClapperAudioInfo.
+ */
+GList *
+gst_clapper_media_info_get_audio_streams (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->audio_stream_list;
+}
+
+/**
+ * gst_clapper_media_info_get_duration:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: duration of the media.
+ */
+GstClockTime
+gst_clapper_media_info_get_duration (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), -1);
+
+  return info->duration;
+}
+
+/**
+ * gst_clapper_media_info_get_tags:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: (transfer none): the tags contained in media info.
+ */
+GstTagList *
+gst_clapper_media_info_get_tags (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->tags;
+}
+
+/**
+ * gst_clapper_media_info_get_toc:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: (transfer none): the toc contained in media info.
+ */
+GstToc *
+gst_clapper_media_info_get_toc (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->toc;
+}
+
+/**
+ * gst_clapper_media_info_get_title:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: the media title. When metadata does not contain title,
+ * returns title parsed from URI.
+ */
+const gchar *
+gst_clapper_media_info_get_title (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->title;
+}
+
+/**
+ * gst_clapper_media_info_get_container_format:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: the container format.
+ */
+const gchar *
+gst_clapper_media_info_get_container_format (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->container;
+}
+
+/**
+ * gst_clapper_media_info_get_image_sample:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Function to get the image (or preview-image) stored in taglist.
+ * Application can use `gst_sample_*_()` API's to get caps, buffer etc.
+ *
+ * Returns: (transfer none): GstSample or NULL.
+ */
+GstSample *
+gst_clapper_media_info_get_image_sample (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), NULL);
+
+  return info->image_sample;
+}
+
+/**
+ * gst_clapper_media_info_get_number_of_streams:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: number of total streams.
+ */
+guint
+gst_clapper_media_info_get_number_of_streams (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), 0);
+
+  return g_list_length (info->stream_list);
+}
+
+/**
+ * gst_clapper_media_info_get_number_of_video_streams:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: number of video streams.
+ */
+guint
+gst_clapper_media_info_get_number_of_video_streams (const GstClapperMediaInfo *
+    info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), 0);
+
+  return g_list_length (info->video_stream_list);
+}
+
+/**
+ * gst_clapper_media_info_get_number_of_audio_streams:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: number of audio streams.
+ */
+guint
+gst_clapper_media_info_get_number_of_audio_streams (const GstClapperMediaInfo *
+    info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), 0);
+
+  return g_list_length (info->audio_stream_list);
+}
+
+/**
+ * gst_clapper_media_info_get_number_of_subtitle_streams:
+ * @info: a #GstClapperMediaInfo
+ *
+ * Returns: number of subtitle streams.
+ */
+guint gst_clapper_media_info_get_number_of_subtitle_streams
+    (const GstClapperMediaInfo * info)
+{
+  g_return_val_if_fail (GST_IS_CLAPPER_MEDIA_INFO (info), 0);
+
+  return g_list_length (info->subtitle_stream_list);
+}

lib/gst/clapper/gstclapper-media-info.h

@@ -0,0 +1,253 @@
+/* GStreamer
+ *
+ * Copyright (C) 2015 Brijesh Singh <brijesh.ksingh@gmail.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_MEDIA_INFO_H__
+#define __GST_CLAPPER_MEDIA_INFO_H__
+
+#include <gst/gst.h>
+#include <gst/clapper/clapper-prelude.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CLAPPER_STREAM_INFO \
+  (gst_clapper_stream_info_get_type ())
+#define GST_CLAPPER_STREAM_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CLAPPER_STREAM_INFO,GstClapperStreamInfo))
+#define GST_CLAPPER_STREAM_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CLAPPER_STREAM_INFO,GstClapperStreamInfo))
+#define GST_IS_CLAPPER_STREAM_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CLAPPER_STREAM_INFO))
+#define GST_IS_CLAPPER_STREAM_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CLAPPER_STREAM_INFO))
+
+/**
+ * GstClapperStreamInfo:
+ *
+ * Base structure for information concerning a media stream. Depending on
+ * the stream type, one can find more media-specific information in
+ * #GstClapperVideoInfo, #GstClapperAudioInfo, #GstClapperSubtitleInfo.
+ */
+typedef struct _GstClapperStreamInfo GstClapperStreamInfo;
+typedef struct _GstClapperStreamInfoClass GstClapperStreamInfoClass;
+
+GST_CLAPPER_API
+GType         gst_clapper_stream_info_get_type (void);
+
+GST_CLAPPER_API
+gint          gst_clapper_stream_info_get_index (const GstClapperStreamInfo *info);
+
+GST_CLAPPER_API
+const gchar*  gst_clapper_stream_info_get_stream_type (const GstClapperStreamInfo *info);
+
+GST_CLAPPER_API
+GstTagList*   gst_clapper_stream_info_get_tags  (const GstClapperStreamInfo *info);
+
+GST_CLAPPER_API
+GstCaps*      gst_clapper_stream_info_get_caps  (const GstClapperStreamInfo *info);
+
+GST_CLAPPER_API
+const gchar*  gst_clapper_stream_info_get_codec (const GstClapperStreamInfo *info);
+
+#define GST_TYPE_CLAPPER_VIDEO_INFO \
+  (gst_clapper_video_info_get_type ())
+#define GST_CLAPPER_VIDEO_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CLAPPER_VIDEO_INFO, GstClapperVideoInfo))
+#define GST_CLAPPER_VIDEO_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((obj),GST_TYPE_CLAPPER_VIDEO_INFO, GstClapperVideoInfoClass))
+#define GST_IS_CLAPPER_VIDEO_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CLAPPER_VIDEO_INFO))
+#define GST_IS_CLAPPER_VIDEO_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((obj),GST_TYPE_CLAPPER_VIDEO_INFO))
+
+/**
+ * GstClapperVideoInfo:
+ *
+ * #GstClapperStreamInfo specific to video streams.
+ */
+typedef struct _GstClapperVideoInfo GstClapperVideoInfo;
+typedef struct _GstClapperVideoInfoClass GstClapperVideoInfoClass;
+
+GST_CLAPPER_API
+GType         gst_clapper_video_info_get_type (void);
+
+GST_CLAPPER_API
+gint          gst_clapper_video_info_get_bitrate     (const GstClapperVideoInfo * info);
+
+GST_CLAPPER_API
+gint          gst_clapper_video_info_get_max_bitrate (const GstClapperVideoInfo * info);
+
+GST_CLAPPER_API
+gint          gst_clapper_video_info_get_width       (const GstClapperVideoInfo * info);
+
+GST_CLAPPER_API
+gint          gst_clapper_video_info_get_height      (const GstClapperVideoInfo * info);
+
+GST_CLAPPER_API
+void          gst_clapper_video_info_get_framerate   (const GstClapperVideoInfo * info,
+                                                     gint * fps_n,
+                                                     gint * fps_d);
+
+GST_CLAPPER_API
+void          gst_clapper_video_info_get_pixel_aspect_ratio (const GstClapperVideoInfo * info,
+                                                            guint * par_n,
+                                                            guint * par_d);
+
+#define GST_TYPE_CLAPPER_AUDIO_INFO \
+  (gst_clapper_audio_info_get_type ())
+#define GST_CLAPPER_AUDIO_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CLAPPER_AUDIO_INFO, GstClapperAudioInfo))
+#define GST_CLAPPER_AUDIO_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CLAPPER_AUDIO_INFO, GstClapperAudioInfoClass))
+#define GST_IS_CLAPPER_AUDIO_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CLAPPER_AUDIO_INFO))
+#define GST_IS_CLAPPER_AUDIO_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CLAPPER_AUDIO_INFO))
+
+/**
+ * GstClapperAudioInfo:
+ *
+ * #GstClapperStreamInfo specific to audio streams.
+ */
+typedef struct _GstClapperAudioInfo GstClapperAudioInfo;
+typedef struct _GstClapperAudioInfoClass GstClapperAudioInfoClass;
+
+GST_CLAPPER_API
+GType         gst_clapper_audio_info_get_type (void);
+
+GST_CLAPPER_API
+gint          gst_clapper_audio_info_get_channels    (const GstClapperAudioInfo* info);
+
+GST_CLAPPER_API
+gint          gst_clapper_audio_info_get_sample_rate (const GstClapperAudioInfo* info);
+
+GST_CLAPPER_API
+gint          gst_clapper_audio_info_get_bitrate     (const GstClapperAudioInfo* info);
+
+GST_CLAPPER_API
+gint          gst_clapper_audio_info_get_max_bitrate (const GstClapperAudioInfo* info);
+
+GST_CLAPPER_API
+const gchar*  gst_clapper_audio_info_get_language    (const GstClapperAudioInfo* info);
+
+#define GST_TYPE_CLAPPER_SUBTITLE_INFO \
+  (gst_clapper_subtitle_info_get_type ())
+#define GST_CLAPPER_SUBTITLE_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CLAPPER_SUBTITLE_INFO, GstClapperSubtitleInfo))
+#define GST_CLAPPER_SUBTITLE_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CLAPPER_SUBTITLE_INFO,GstClapperSubtitleInfoClass))
+#define GST_IS_CLAPPER_SUBTITLE_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CLAPPER_SUBTITLE_INFO))
+#define GST_IS_CLAPPER_SUBTITLE_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CLAPPER_SUBTITLE_INFO))
+
+/**
+ * GstClapperSubtitleInfo:
+ *
+ * #GstClapperStreamInfo specific to subtitle streams.
+ */
+typedef struct _GstClapperSubtitleInfo GstClapperSubtitleInfo;
+typedef struct _GstClapperSubtitleInfoClass GstClapperSubtitleInfoClass;
+
+GST_CLAPPER_API
+GType         gst_clapper_subtitle_info_get_type (void);
+
+GST_CLAPPER_API
+const gchar * gst_clapper_subtitle_info_get_title    (const GstClapperSubtitleInfo *info);
+
+GST_CLAPPER_API
+const gchar * gst_clapper_subtitle_info_get_language (const GstClapperSubtitleInfo *info);
+
+#define GST_TYPE_CLAPPER_MEDIA_INFO \
+  (gst_clapper_media_info_get_type())
+#define GST_CLAPPER_MEDIA_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CLAPPER_MEDIA_INFO,GstClapperMediaInfo))
+#define GST_CLAPPER_MEDIA_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CLAPPER_MEDIA_INFO,GstClapperMediaInfoClass))
+#define GST_IS_CLAPPER_MEDIA_INFO(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CLAPPER_MEDIA_INFO))
+#define GST_IS_CLAPPER_MEDIA_INFO_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CLAPPER_MEDIA_INFO))
+
+/**
+ * GstClapperMediaInfo:
+ *
+ * Structure containing the media information of a URI.
+ */
+typedef struct _GstClapperMediaInfo GstClapperMediaInfo;
+typedef struct _GstClapperMediaInfoClass GstClapperMediaInfoClass;
+
+GST_CLAPPER_API
+GType         gst_clapper_media_info_get_type                       (void);
+
+GST_CLAPPER_API
+const gchar * gst_clapper_media_info_get_uri                        (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+gboolean      gst_clapper_media_info_is_seekable                    (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+gboolean      gst_clapper_media_info_is_live                        (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+GstClockTime  gst_clapper_media_info_get_duration                   (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+GList *       gst_clapper_media_info_get_stream_list                (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+guint         gst_clapper_media_info_get_number_of_streams          (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+GList *       gst_clapper_media_info_get_video_streams              (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+guint         gst_clapper_media_info_get_number_of_video_streams    (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+GList *       gst_clapper_media_info_get_audio_streams              (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+guint         gst_clapper_media_info_get_number_of_audio_streams    (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+GList *       gst_clapper_media_info_get_subtitle_streams           (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+guint         gst_clapper_media_info_get_number_of_subtitle_streams (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+GstTagList *  gst_clapper_media_info_get_tags                       (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+GstToc *      gst_clapper_media_info_get_toc                        (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+const gchar * gst_clapper_media_info_get_title                      (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+const gchar * gst_clapper_media_info_get_container_format           (const GstClapperMediaInfo *info);
+
+GST_CLAPPER_API
+GstSample *   gst_clapper_media_info_get_image_sample               (const GstClapperMediaInfo *info);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_MEDIA_INFO_H */

lib/gst/clapper/gstclapper-mpris-private.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_MPRIS_PRIVATE_H__
+#define __GST_CLAPPER_MPRIS_PRIVATE_H__
+
+#include <gst/clapper/gstclapper-mpris.h>
+#include <gst/clapper/gstclapper.h>
+
+G_BEGIN_DECLS
+
+G_GNUC_INTERNAL
+void gst_clapper_mpris_set_clapper                  (GstClapperMpris *self, GstClapper *clapper,
+                                                        GstClapperSignalDispatcher *signal_dispatcher);
+
+G_GNUC_INTERNAL
+void gst_clapper_mpris_set_media_info               (GstClapperMpris *self, GstClapperMediaInfo *info);
+
+G_GNUC_INTERNAL
+void gst_clapper_mpris_set_playback_status          (GstClapperMpris *self, const gchar *status);
+
+G_GNUC_INTERNAL
+void gst_clapper_mpris_set_position                 (GstClapperMpris *self, gint64 position);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_MPRIS_PRIVATE_H__ */

lib/gst/clapper/gstclapper-mpris.c

@@ -0,0 +1,793 @@
+/*
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-mpris-gdbus.h"
+#include "gstclapper-mpris.h"
+#include "gstclapper-mpris-private.h"
+#include "gstclapper-signal-dispatcher-private.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_clapper_mpris_debug);
+#define GST_CAT_DEFAULT gst_clapper_mpris_debug
+
+#define MPRIS_DEFAULT_VOLUME 1.0
+
+enum
+{
+  PROP_0,
+  PROP_OWN_NAME,
+  PROP_ID_PATH,
+  PROP_IDENTITY,
+  PROP_DESKTOP_ENTRY,
+  PROP_DEFAULT_ART_URL,
+  PROP_VOLUME,
+  PROP_LAST
+};
+
+struct _GstClapperMpris
+{
+  GObject parent;
+
+  GstClapperMprisMediaPlayer2 *base_skeleton;
+  GstClapperMprisMediaPlayer2Player *player_skeleton;
+
+  GstClapperSignalDispatcher *signal_dispatcher;
+  GstClapperMediaInfo *media_info;
+
+  guint name_id;
+
+  /* Properties */
+  gchar *own_name;
+  gchar *id_path;
+  gchar *identity;
+  gchar *desktop_entry;
+  gchar *default_art_url;
+
+  gboolean parse_media_info;
+
+  /* Current status */
+  gchar *playback_status;
+  gboolean can_play;
+  guint64 position;
+
+  GThread *thread;
+  GMutex lock;
+  GCond cond;
+  GMainContext *context;
+  GMainLoop *loop;
+};
+
+struct _GstClapperMprisClass
+{
+  GObjectClass parent_class;
+};
+
+#define parent_class gst_clapper_mpris_parent_class
+G_DEFINE_TYPE (GstClapperMpris, gst_clapper_mpris, G_TYPE_OBJECT);
+
+static GParamSpec *param_specs[PROP_LAST] = { NULL, };
+
+static void gst_clapper_mpris_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_clapper_mpris_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+static void gst_clapper_mpris_dispose (GObject * object);
+static void gst_clapper_mpris_finalize (GObject * object);
+static void gst_clapper_mpris_constructed (GObject * object);
+static gpointer gst_clapper_mpris_main (gpointer data);
+
+static void unregister (GstClapperMpris * self);
+
+static void
+gst_clapper_mpris_init (GstClapperMpris * self)
+{
+  GST_DEBUG_CATEGORY_INIT (gst_clapper_mpris_debug, "ClapperMpris", 0,
+      "GstClapperMpris");
+  GST_TRACE_OBJECT (self, "Initializing");
+
+  self = gst_clapper_mpris_get_instance_private (self);
+
+  g_mutex_init (&self->lock);
+  g_cond_init (&self->cond);
+
+  self->context = g_main_context_new ();
+  self->loop = g_main_loop_new (self->context, FALSE);
+
+  self->base_skeleton = gst_clapper_mpris_media_player2_skeleton_new ();
+  self->player_skeleton = gst_clapper_mpris_media_player2_player_skeleton_new ();
+
+  self->name_id = 0;
+  self->own_name = NULL;
+  self->id_path = NULL;
+  self->identity = NULL;
+  self->desktop_entry = NULL;
+  self->default_art_url = NULL;
+
+  self->signal_dispatcher = NULL;
+  self->media_info = NULL;
+  self->parse_media_info = FALSE;
+
+  self->playback_status = g_strdup ("Stopped");
+  self->can_play = FALSE;
+  self->position = 0;
+
+  GST_TRACE_OBJECT (self, "Initialized");
+}
+
+static void
+gst_clapper_mpris_class_init (GstClapperMprisClass * klass)
+{
+  GObjectClass *gobject_class = (GObjectClass *) klass;
+
+  gobject_class->set_property = gst_clapper_mpris_set_property;
+  gobject_class->get_property = gst_clapper_mpris_get_property;
+  gobject_class->dispose = gst_clapper_mpris_dispose;
+  gobject_class->finalize = gst_clapper_mpris_finalize;
+  gobject_class->constructed = gst_clapper_mpris_constructed;
+
+  param_specs[PROP_OWN_NAME] =
+      g_param_spec_string ("own-name", "DBus own name",
+      "DBus name to own on connection",
+      NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  param_specs[PROP_ID_PATH] =
+      g_param_spec_string ("id-path", "DBus id path",
+      "A valid D-Bus path describing this player",
+      NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  param_specs[PROP_IDENTITY] =
+      g_param_spec_string ("identity", "Player name",
+      "A friendly name to identify the media player",
+      NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  param_specs[PROP_DESKTOP_ENTRY] =
+      g_param_spec_string ("desktop-entry", "Desktop entry filename",
+      "The basename of an installed .desktop file",
+      NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  param_specs[PROP_DEFAULT_ART_URL] =
+      g_param_spec_string ("default-art-url", "Default Art URL",
+      "Default art to show when media does not provide one",
+      NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  param_specs[PROP_VOLUME] =
+      g_param_spec_double ("volume", "Volume", "Volume",
+      0, 1.5, MPRIS_DEFAULT_VOLUME, G_PARAM_READWRITE |
+      G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (gobject_class, PROP_LAST, param_specs);
+}
+
+static void
+gst_clapper_mpris_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (object);
+
+  switch (prop_id) {
+    case PROP_OWN_NAME:
+      self->own_name = g_value_dup_string (value);
+      break;
+    case PROP_ID_PATH:
+      self->id_path = g_value_dup_string (value);
+      break;
+    case PROP_IDENTITY:
+      self->identity = g_value_dup_string (value);
+      break;
+    case PROP_DESKTOP_ENTRY:
+      self->desktop_entry = g_value_dup_string (value);
+      break;
+    case PROP_DEFAULT_ART_URL:
+      self->default_art_url = g_value_dup_string (value);
+      break;
+    case PROP_VOLUME:
+      g_object_set_property (G_OBJECT (self->player_skeleton), "volume", value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_mpris_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (object);
+
+  switch (prop_id) {
+    case PROP_OWN_NAME:
+      g_value_set_string (value, self->own_name);
+      break;
+    case PROP_ID_PATH:
+      g_value_set_string (value, self->id_path);
+      break;
+    case PROP_IDENTITY:
+      g_value_set_string (value, self->identity);
+      break;
+    case PROP_DESKTOP_ENTRY:
+      g_value_set_string (value, self->desktop_entry);
+      break;
+    case PROP_DEFAULT_ART_URL:
+      g_value_set_string (value, self->default_art_url);
+      break;
+    case PROP_VOLUME:
+      g_object_get_property (G_OBJECT (self->player_skeleton), "volume", value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_mpris_dispose (GObject * object)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (object);
+
+  GST_TRACE_OBJECT (self, "Stopping main thread");
+
+  if (self->loop) {
+    g_main_loop_quit (self->loop);
+
+    if (self->thread != g_thread_self ())
+      g_thread_join (self->thread);
+    else
+      g_thread_unref (self->thread);
+    self->thread = NULL;
+
+    g_main_loop_unref (self->loop);
+    self->loop = NULL;
+
+    g_main_context_unref (self->context);
+    self->context = NULL;
+  }
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_clapper_mpris_finalize (GObject * object)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (object);
+
+  GST_TRACE_OBJECT (self, "Finalize");
+
+  g_free (self->own_name);
+  g_free (self->id_path);
+  g_free (self->identity);
+  g_free (self->desktop_entry);
+  g_free (self->default_art_url);
+  g_free (self->playback_status);
+
+  if (self->base_skeleton)
+    g_object_unref (self->base_skeleton);
+  if (self->player_skeleton)
+    g_object_unref (self->player_skeleton);
+  if (self->signal_dispatcher)
+    g_object_unref (self->signal_dispatcher);
+  if (self->media_info)
+    g_object_unref (self->media_info);
+
+  g_mutex_clear (&self->lock);
+  g_cond_clear (&self->cond);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_clapper_mpris_constructed (GObject * object)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (object);
+
+  GST_TRACE_OBJECT (self, "Constructed");
+
+  g_mutex_lock (&self->lock);
+  self->thread = g_thread_new ("GstClapperMpris",
+      gst_clapper_mpris_main, self);
+  while (!self->loop || !g_main_loop_is_running (self->loop))
+    g_cond_wait (&self->cond, &self->lock);
+  g_mutex_unlock (&self->lock);
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+}
+
+static gboolean
+main_loop_running_cb (gpointer user_data)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (user_data);
+
+  GST_TRACE_OBJECT (self, "Main loop running now");
+
+  g_mutex_lock (&self->lock);
+  g_cond_signal (&self->cond);
+  g_mutex_unlock (&self->lock);
+
+  return G_SOURCE_REMOVE;
+}
+
+static gboolean
+handle_play_cb (GstClapperMprisMediaPlayer2Player * player_skeleton,
+    GDBusMethodInvocation * invocation, gpointer user_data)
+{
+  GstClapper *clapper = GST_CLAPPER (user_data);
+
+  GST_DEBUG ("Handle Play");
+
+  gst_clapper_play (clapper);
+  gst_clapper_mpris_media_player2_player_complete_play (player_skeleton, invocation);
+
+  return TRUE;
+}
+
+static gboolean
+handle_pause_cb (GstClapperMprisMediaPlayer2Player * player_skeleton,
+    GDBusMethodInvocation * invocation, gpointer user_data)
+{
+  GstClapper *clapper = GST_CLAPPER (user_data);
+
+  GST_DEBUG ("Handle Pause");
+
+  gst_clapper_pause (clapper);
+  gst_clapper_mpris_media_player2_player_complete_pause (player_skeleton, invocation);
+
+  return TRUE;
+}
+
+static gboolean
+handle_play_pause_cb (GstClapperMprisMediaPlayer2Player * player_skeleton,
+    GDBusMethodInvocation * invocation, gpointer user_data)
+{
+  GstClapper *clapper = GST_CLAPPER (user_data);
+
+  GST_DEBUG ("Handle PlayPause");
+
+  gst_clapper_toggle_play (clapper);
+  gst_clapper_mpris_media_player2_player_complete_play_pause (player_skeleton, invocation);
+
+  return TRUE;
+}
+
+static gboolean
+handle_seek_cb (GstClapperMprisMediaPlayer2Player * player_skeleton,
+    GDBusMethodInvocation * invocation, gint64 offset, gpointer user_data)
+{
+  GstClapper *clapper = GST_CLAPPER (user_data);
+
+  GST_DEBUG ("Handle Seek");
+
+  gst_clapper_seek_offset (clapper, offset * GST_USECOND);
+  gst_clapper_mpris_media_player2_player_complete_seek (player_skeleton, invocation);
+
+  return TRUE;
+}
+
+static gboolean
+handle_set_position_cb (GstClapperMprisMediaPlayer2Player * player_skeleton,
+    GDBusMethodInvocation * invocation, const gchar * track_id,
+    gint64 position, gpointer user_data)
+{
+  GstClapper *clapper = GST_CLAPPER (user_data);
+
+  GST_DEBUG ("Handle SetPosition");
+
+  gst_clapper_seek (clapper, position * GST_USECOND);
+  gst_clapper_mpris_media_player2_player_complete_set_position (player_skeleton, invocation);
+
+  return TRUE;
+}
+
+static gboolean
+handle_open_uri_cb (GstClapperMprisMediaPlayer2Player * player_skeleton,
+    GDBusMethodInvocation * invocation, const gchar * uri,
+    gpointer user_data)
+{
+  GstClapper *clapper = GST_CLAPPER (user_data);
+
+  GST_DEBUG ("Handle OpenUri");
+
+  /* FIXME: set one item playlist instead */
+  gst_clapper_set_uri (clapper, uri);
+  gst_clapper_mpris_media_player2_player_complete_open_uri (player_skeleton, invocation);
+
+  return TRUE;
+}
+
+static void
+volume_notify_dispatch (gpointer user_data)
+{
+  GstClapperMpris *self = user_data;
+
+  g_object_notify_by_pspec (G_OBJECT (self), param_specs[PROP_VOLUME]);
+}
+
+static void
+handle_volume_notify_cb (G_GNUC_UNUSED GObject * obj,
+    G_GNUC_UNUSED GParamSpec * pspec, GstClapperMpris * self)
+{
+  gst_clapper_signal_dispatcher_dispatch (self->signal_dispatcher, NULL,
+      volume_notify_dispatch, g_object_ref (self),
+      (GDestroyNotify) g_object_unref);
+}
+
+static void
+unregister (GstClapperMpris * self)
+{
+  if (!self->name_id)
+    return;
+
+  GST_DEBUG_OBJECT (self, "Unregister");
+  g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (self->base_skeleton));
+  g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (self->player_skeleton));
+  g_bus_unown_name (self->name_id);
+  self->name_id = 0;
+}
+
+static const gchar *
+_get_mpris_trackid (GstClapperMpris * self)
+{
+  /* TODO: Support more tracks */
+  return g_strdup_printf ("%s%s%i", self->id_path, "/Track/", 0);
+}
+
+static void
+_set_supported_uri_schemes (GstClapperMpris * self)
+{
+  const gchar *uri_schemes[96] = {};
+  GList *elements, *el;
+  guint index = 0;
+
+  elements = gst_element_factory_list_get_elements (
+      GST_ELEMENT_FACTORY_TYPE_SRC, GST_RANK_NONE);
+
+  for (el = elements; el != NULL; el = el->next) {
+    const gchar *const *protocols;
+    GstElementFactory *factory = GST_ELEMENT_FACTORY (el->data);
+
+    if (gst_element_factory_get_uri_type (factory) != GST_URI_SRC)
+      continue;
+
+    protocols = gst_element_factory_get_uri_protocols (factory);
+    if (protocols == NULL || *protocols == NULL)
+      continue;
+
+    while (*protocols != NULL) {
+      guint j = index;
+
+      while (j--) {
+        if (strcmp (uri_schemes[j], *protocols) == 0)
+          goto next;
+      }
+      uri_schemes[index] = *protocols;
+      GST_DEBUG_OBJECT (self, "Added supported URI scheme: %s", *protocols);
+      ++index;
+next:
+      ++protocols;
+    }
+  }
+  gst_plugin_feature_list_free (elements);
+
+  gst_clapper_mpris_media_player2_set_supported_uri_schemes (
+      self->base_skeleton, uri_schemes);
+}
+
+static void
+name_acquired_cb (GDBusConnection * connection,
+    const gchar *name, gpointer user_data)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (user_data);
+  GVariantBuilder builder;
+
+  g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (self->base_skeleton),
+      connection, "/org/mpris/MediaPlayer2", NULL);
+  g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (self->player_skeleton),
+      connection, "/org/mpris/MediaPlayer2", NULL);
+
+  if (self->identity)
+    gst_clapper_mpris_media_player2_set_identity (self->base_skeleton, self->identity);
+  if (self->desktop_entry)
+    gst_clapper_mpris_media_player2_set_desktop_entry (self->base_skeleton, self->desktop_entry);
+
+  _set_supported_uri_schemes (self);
+
+  gst_clapper_mpris_media_player2_player_set_playback_status (self->player_skeleton, "Stopped");
+  gst_clapper_mpris_media_player2_player_set_minimum_rate (self->player_skeleton, 0.01);
+  gst_clapper_mpris_media_player2_player_set_maximum_rate (self->player_skeleton, 2.0);
+  gst_clapper_mpris_media_player2_player_set_can_seek (self->player_skeleton, TRUE);
+  gst_clapper_mpris_media_player2_player_set_can_control (self->player_skeleton, TRUE);
+
+  g_object_bind_property (self->player_skeleton, "can-play",
+      self->player_skeleton, "can-pause", G_BINDING_DEFAULT);
+
+  g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);
+  g_variant_builder_add (&builder, "{sv}", "mpris:trackid", g_variant_new_string (_get_mpris_trackid (self)));
+  g_variant_builder_add (&builder, "{sv}", "mpris:length", g_variant_new_uint64 (0));
+  if (self->default_art_url)
+    g_variant_builder_add (&builder, "{sv}", "mpris:artUrl", g_variant_new_string (self->default_art_url));
+  gst_clapper_mpris_media_player2_player_set_metadata (self->player_skeleton, g_variant_builder_end (&builder));
+
+  GST_DEBUG_OBJECT (self, "Ready");
+}
+
+static void
+name_lost_cb (GDBusConnection * connection,
+    const gchar * name, gpointer user_data)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (user_data);
+
+  unregister (self);
+}
+
+static gboolean
+mpris_update_props_dispatch (gpointer user_data)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (user_data);
+
+  GST_DEBUG_OBJECT (self, "Updating MPRIS props");
+  g_mutex_lock (&self->lock);
+
+  if (self->parse_media_info) {
+    GVariantBuilder builder;
+    guint64 duration;
+    const gchar *track_id, *uri, *title;
+
+    GST_DEBUG_OBJECT (self, "Parsing media info");
+    g_variant_builder_init (&builder, G_VARIANT_TYPE_ARRAY);
+
+    track_id = _get_mpris_trackid (self);
+    uri = gst_clapper_media_info_get_uri (self->media_info);
+    title = gst_clapper_media_info_get_title (self->media_info);
+
+    if (track_id) {
+      g_variant_builder_add (&builder, "{sv}", "mpris:trackid",
+          g_variant_new_string (track_id));
+      GST_DEBUG_OBJECT (self, "mpris:trackid: %s", track_id);
+    }
+    if (uri) {
+      g_variant_builder_add (&builder, "{sv}", "xesam:url",
+          g_variant_new_string (uri));
+      GST_DEBUG_OBJECT (self, "xesam:url: %s", uri);
+    }
+    if (title) {
+      g_variant_builder_add (&builder, "{sv}", "xesam:title",
+          g_variant_new_string (title));
+      GST_DEBUG_OBJECT (self, "xesam:title: %s", title);
+    }
+
+    duration = gst_clapper_media_info_get_duration (self->media_info);
+    duration = (duration != GST_CLOCK_TIME_NONE) ? duration / GST_USECOND : 0;
+    g_variant_builder_add (&builder, "{sv}", "mpris:length", g_variant_new_uint64 (duration));
+    GST_DEBUG_OBJECT (self, "mpris:length: %ld", duration);
+
+    /* TODO: Check for image sample */
+    if (self->default_art_url) {
+      g_variant_builder_add (&builder, "{sv}", "mpris:artUrl", g_variant_new_string (self->default_art_url));
+      GST_DEBUG_OBJECT (self, "mpris:artUrl: %s", self->default_art_url);
+    }
+
+    GST_DEBUG_OBJECT (self, "Media info parsed");
+    self->parse_media_info = FALSE;
+
+    gst_clapper_mpris_media_player2_player_set_metadata (
+        self->player_skeleton, g_variant_builder_end (&builder));
+  }
+  if (gst_clapper_mpris_media_player2_player_get_can_play (
+          self->player_skeleton) != self->can_play) {
+    /* "can-play" is bound with "can-pause" */
+    gst_clapper_mpris_media_player2_player_set_can_play (
+        self->player_skeleton, self->can_play);
+    GST_DEBUG_OBJECT (self, "CanPlay/CanPause: %s", self->can_play ? "yes" : "no");
+  }
+  if (strcmp (gst_clapper_mpris_media_player2_player_get_playback_status (
+          self->player_skeleton), self->playback_status) != 0) {
+    gst_clapper_mpris_media_player2_player_set_playback_status (
+        self->player_skeleton, self->playback_status);
+    GST_DEBUG_OBJECT (self, "PlaybackStatus: %s", self->playback_status);
+  }
+  if (gst_clapper_mpris_media_player2_player_get_position (
+          self->player_skeleton) != self->position) {
+    gst_clapper_mpris_media_player2_player_set_position (
+        self->player_skeleton, self->position);
+    GST_DEBUG_OBJECT (self, "Position: %ld", self->position);
+  }
+
+  g_mutex_unlock (&self->lock);
+  GST_DEBUG_OBJECT (self, "MPRIS props updated");
+
+  return G_SOURCE_REMOVE;
+}
+
+static void
+mpris_dispatcher_update_dispatch (GstClapperMpris * self)
+{
+  if (!self->name_id)
+    return;
+
+  GST_DEBUG_OBJECT (self, "Queued update props dispatch");
+
+  g_main_context_invoke_full (self->context,
+      G_PRIORITY_DEFAULT, mpris_update_props_dispatch,
+      g_object_ref (self), g_object_unref);
+}
+
+static gpointer
+gst_clapper_mpris_main (gpointer data)
+{
+  GstClapperMpris *self = GST_CLAPPER_MPRIS (data);
+
+  GDBusConnectionFlags flags;
+  GDBusConnection *connection;
+  GSource *source;
+  gchar *address;
+
+  GST_TRACE_OBJECT (self, "Starting main thread");
+
+  g_main_context_push_thread_default (self->context);
+
+  source = g_idle_source_new ();
+  g_source_set_callback (source, (GSourceFunc) main_loop_running_cb, self,
+      NULL);
+  g_source_attach (source, self->context);
+  g_source_unref (source);
+
+  address = g_dbus_address_get_for_bus_sync (G_BUS_TYPE_SESSION, NULL, NULL);
+  if (!address) {
+    GST_WARNING_OBJECT (self, "No MPRIS bus address");
+    goto no_mpris;
+  }
+
+  GST_DEBUG_OBJECT (self, "Obtained MPRIS DBus address");
+
+  flags = G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT |
+      G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION;
+  connection = g_dbus_connection_new_for_address_sync (address,
+      flags, NULL, NULL, NULL);
+  g_free (address);
+
+  if (!connection) {
+    GST_WARNING_OBJECT (self, "No MPRIS bus connection");
+    goto no_mpris;
+  }
+
+  GST_DEBUG_OBJECT (self, "Obtained MPRIS DBus connection");
+
+  self->name_id = g_bus_own_name_on_connection (connection, self->own_name,
+      G_BUS_NAME_OWNER_FLAGS_NONE,
+      (GBusNameAcquiredCallback) name_acquired_cb,
+      (GBusNameLostCallback) name_lost_cb,
+      self, NULL);
+  g_object_unref (connection);
+  goto done;
+
+no_mpris:
+  g_warning ("GstClapperMpris: failed to create DBus connection");
+
+done:
+  GST_TRACE_OBJECT (self, "Starting main loop");
+  g_main_loop_run (self->loop);
+  GST_TRACE_OBJECT (self, "Stopped main loop");
+
+  unregister (self);
+  g_main_context_pop_thread_default (self->context);
+
+  GST_TRACE_OBJECT (self, "Stopped main thread");
+
+  return NULL;
+}
+
+void
+gst_clapper_mpris_set_clapper (GstClapperMpris * self, GstClapper * clapper,
+    GstClapperSignalDispatcher * signal_dispatcher)
+{
+  if (signal_dispatcher)
+    self->signal_dispatcher = g_object_ref (signal_dispatcher);
+
+  g_signal_connect (self->player_skeleton, "handle-play",
+      G_CALLBACK (handle_play_cb), clapper);
+  g_signal_connect (self->player_skeleton, "handle-pause",
+      G_CALLBACK (handle_pause_cb), clapper);
+  g_signal_connect (self->player_skeleton, "handle-play-pause",
+      G_CALLBACK (handle_play_pause_cb), clapper);
+  g_signal_connect (self->player_skeleton, "handle-seek",
+      G_CALLBACK (handle_seek_cb), clapper);
+  g_signal_connect (self->player_skeleton, "handle-set-position",
+      G_CALLBACK (handle_set_position_cb), clapper);
+  g_signal_connect (self->player_skeleton, "handle-open-uri",
+      G_CALLBACK (handle_open_uri_cb), clapper);
+
+  g_object_bind_property (clapper, "volume", self, "volume", G_BINDING_BIDIRECTIONAL);
+  g_signal_connect (self->player_skeleton, "notify::volume",
+      G_CALLBACK (handle_volume_notify_cb), self);
+}
+
+void
+gst_clapper_mpris_set_playback_status (GstClapperMpris * self, const gchar * status)
+{
+  g_mutex_lock (&self->lock);
+  if (strcmp (self->playback_status, status) == 0) {
+    g_mutex_unlock (&self->lock);
+    return;
+  }
+  g_free (self->playback_status);
+  self->playback_status = g_strdup (status);
+  self->can_play = strcmp (status, "Stopped") != 0;
+  g_mutex_unlock (&self->lock);
+
+  mpris_dispatcher_update_dispatch (self);
+}
+
+void
+gst_clapper_mpris_set_position (GstClapperMpris * self, gint64 position)
+{
+  position /= GST_USECOND;
+
+  g_mutex_lock (&self->lock);
+  if (self->position == position) {
+    g_mutex_unlock (&self->lock);
+    return;
+  }
+  self->position = position;
+  g_mutex_unlock (&self->lock);
+
+  mpris_dispatcher_update_dispatch (self);
+}
+
+void
+gst_clapper_mpris_set_media_info (GstClapperMpris *self, GstClapperMediaInfo *info)
+{
+  g_mutex_lock (&self->lock);
+  if (self->media_info)
+    g_object_unref (self->media_info);
+  self->media_info = info;
+  self->parse_media_info = TRUE;
+  g_mutex_unlock (&self->lock);
+
+  mpris_dispatcher_update_dispatch (self);
+}
+
+/**
+ * gst_clapper_mpris_new:
+ * @own_name: DBus own name
+ * @id_path: DBus id path used for prefix
+ * @identity: (allow-none): friendly name
+ * @desktop_entry: (allow-none): Desktop entry filename
+ * @default_art_url: (allow-none): filepath to default art
+ *
+ * Creates a new #GstClapperMpris instance.
+ *
+ * Returns: (transfer full): a new #GstClapperMpris instance
+ */
+GstClapperMpris *
+gst_clapper_mpris_new (const gchar * own_name, const gchar * id_path,
+    const gchar * identity, const gchar * desktop_entry,
+    const gchar * default_art_url)
+{
+  return g_object_new (GST_TYPE_CLAPPER_MPRIS,
+      "own-name", own_name, "id_path", id_path,
+      "identity", identity, "desktop-entry", desktop_entry,
+      "default-art-url", default_art_url, NULL);
+}

lib/gst/clapper/gstclapper-mpris.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_MPRIS_H__
+#define __GST_CLAPPER_MPRIS_H__
+
+#include <glib.h>
+#include <gio/gio.h>
+
+#include <gst/clapper/clapper-prelude.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstClapperMpris GstClapperMpris;
+typedef struct _GstClapperMprisClass GstClapperMprisClass;
+
+#define GST_TYPE_CLAPPER_MPRIS             (gst_clapper_mpris_get_type ())
+#define GST_IS_CLAPPER_MPRIS(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CLAPPER_MPRIS))
+#define GST_IS_CLAPPER_MPRIS_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_CLAPPER_MPRIS))
+#define GST_CLAPPER_MPRIS_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CLAPPER_MPRIS, GstClapperMprisClass))
+#define GST_CLAPPER_MPRIS(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CLAPPER_MPRIS, GstClapperMpris))
+#define GST_CLAPPER_MPRIS_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_CLAPPER_MPRIS, GstClapperMprisClass))
+#define GST_CLAPPER_MPRIS_CAST(obj)        ((GstClapperMpris*)(obj))
+
+#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstClapperMpris, g_object_unref)
+#endif
+
+GST_CLAPPER_API
+GType gst_clapper_mpris_get_type                      (void);
+
+GST_CLAPPER_API
+GstClapperMpris * gst_clapper_mpris_new               (const gchar *own_name, const gchar *id_path, const gchar *identity,
+                                                          const gchar *desktop_entry, const gchar *default_art_url);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_MPRIS_H__ */

lib/gst/clapper/gstclapper-signal-dispatcher-private.h

@@ -0,0 +1,35 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_SIGNAL_DISPATCHER_PRIVATE_H__
+#define __GST_CLAPPER_SIGNAL_DISPATCHER_PRIVATE_H__
+
+#include <gst/clapper/gstclapper-signal-dispatcher.h>
+
+G_BEGIN_DECLS
+
+G_GNUC_INTERNAL void gst_clapper_signal_dispatcher_dispatch (GstClapperSignalDispatcher * self,
+    GstClapper * clapper, GstClapperSignalDispatcherFunc emitter, gpointer data,
+    GDestroyNotify destroy);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_SIGNAL_DISPATCHER_PRIVATE_H__ */

lib/gst/clapper/gstclapper-signal-dispatcher.c

@@ -0,0 +1,58 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-signal-dispatcher.h"
+#include "gstclapper-signal-dispatcher-private.h"
+
+G_DEFINE_INTERFACE (GstClapperSignalDispatcher, gst_clapper_signal_dispatcher,
+    G_TYPE_OBJECT);
+
+static void
+gst_clapper_signal_dispatcher_default_init (G_GNUC_UNUSED
+    GstClapperSignalDispatcherInterface * iface)
+{
+
+}
+
+void
+gst_clapper_signal_dispatcher_dispatch (GstClapperSignalDispatcher * self,
+    GstClapper * clapper, GstClapperSignalDispatcherFunc emitter, gpointer data,
+    GDestroyNotify destroy)
+{
+  GstClapperSignalDispatcherInterface *iface;
+
+  if (!self) {
+    emitter (data);
+    if (destroy)
+      destroy (data);
+    return;
+  }
+
+  g_return_if_fail (GST_IS_CLAPPER_SIGNAL_DISPATCHER (self));
+  iface = GST_CLAPPER_SIGNAL_DISPATCHER_GET_INTERFACE (self);
+  g_return_if_fail (iface->dispatch != NULL);
+
+  iface->dispatch (self, clapper, emitter, data, destroy);
+}

lib/gst/clapper/gstclapper-signal-dispatcher.h

@@ -0,0 +1,53 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_SIGNAL_DISPATCHER_H__
+#define __GST_CLAPPER_SIGNAL_DISPATCHER_H__
+
+#include <gst/gst.h>
+#include <gst/clapper/gstclapper-types.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstClapperSignalDispatcher GstClapperSignalDispatcher;
+typedef struct _GstClapperSignalDispatcherInterface GstClapperSignalDispatcherInterface;
+
+#define GST_TYPE_CLAPPER_SIGNAL_DISPATCHER                (gst_clapper_signal_dispatcher_get_type ())
+#define GST_CLAPPER_SIGNAL_DISPATCHER(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CLAPPER_SIGNAL_DISPATCHER, GstClapperSignalDispatcher))
+#define GST_IS_CLAPPER_SIGNAL_DISPATCHER(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CLAPPER_SIGNAL_DISPATCHER))
+#define GST_CLAPPER_SIGNAL_DISPATCHER_GET_INTERFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_CLAPPER_SIGNAL_DISPATCHER, GstClapperSignalDispatcherInterface))
+
+typedef void (*GstClapperSignalDispatcherFunc) (gpointer data);
+
+struct _GstClapperSignalDispatcherInterface {
+  GTypeInterface parent_iface;
+
+  void (*dispatch) (GstClapperSignalDispatcher * self, GstClapper * clapper,
+                    GstClapperSignalDispatcherFunc emitter, gpointer data,
+                    GDestroyNotify destroy);
+};
+
+GST_CLAPPER_API
+GType        gst_clapper_signal_dispatcher_get_type       (void);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_SIGNAL_DISPATCHER_H__ */

lib/gst/clapper/gstclapper-types.h

@@ -1,5 +1,7 @@
-/*
- * Copyright (C) 2022 Rafał Dzięgiel <rafostar.github@gmail.com>
+/* GStreamer
+ *
+ * Copyright (C) 2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -8,7 +10,7 @@
  *
  * This library 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public
@@ -17,20 +19,19 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#pragma once
+#ifndef __GST_CLAPPER_TYPES_H__
+#define __GST_CLAPPER_TYPES_H__
 
-#include "gst/plugin/gstclapperimporter.h"
+#include <gst/gst.h>
+#include <gst/clapper/clapper-prelude.h>
 
 G_BEGIN_DECLS
 
-#define GST_TYPE_CLAPPER_RAW_IMPORTER (gst_clapper_raw_importer_get_type())
-G_DECLARE_FINAL_TYPE (GstClapperRawImporter, gst_clapper_raw_importer, GST, CLAPPER_RAW_IMPORTER, GstClapperImporter)
-
-#define GST_CLAPPER_RAW_IMPORTER_CAST(obj)        ((GstClapperRawImporter *)(obj))
-
-struct _GstClapperRawImporter
-{
-  GstClapperImporter parent;
-};
+typedef struct _GstClapper GstClapper;
+typedef struct _GstClapperClass GstClapperClass;
 
 G_END_DECLS
+
+#endif /* __GST_CLAPPER_TYPES_H__ */
+
+

lib/gst/clapper/gstclapper-video-overlay-video-renderer.c

@@ -0,0 +1,345 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:gstclapper-videooverlayvideorenderer
+ * @title: GstClapperVideoOverlayVideoRenderer
+ * @short_description: Clapper Video Overlay Video Renderer
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-video-overlay-video-renderer.h"
+#include "gstclapper.h"
+
+#include <gst/video/video.h>
+
+struct _GstClapperVideoOverlayVideoRenderer
+{
+  GObject parent;
+
+  GstVideoOverlay *video_overlay;
+  gpointer window_handle;
+  gint x, y, width, height;
+
+  GstElement *video_sink;       /* configured video sink, or NULL      */
+};
+
+struct _GstClapperVideoOverlayVideoRendererClass
+{
+  GObjectClass parent_class;
+};
+
+static void
+    gst_clapper_video_overlay_video_renderer_interface_init
+    (GstClapperVideoRendererInterface * iface);
+
+enum
+{
+  VIDEO_OVERLAY_VIDEO_RENDERER_PROP_0,
+  VIDEO_OVERLAY_VIDEO_RENDERER_PROP_WINDOW_HANDLE,
+  VIDEO_OVERLAY_VIDEO_RENDERER_PROP_VIDEO_SINK,
+  VIDEO_OVERLAY_VIDEO_RENDERER_PROP_LAST
+};
+
+G_DEFINE_TYPE_WITH_CODE (GstClapperVideoOverlayVideoRenderer,
+    gst_clapper_video_overlay_video_renderer, G_TYPE_OBJECT,
+    G_IMPLEMENT_INTERFACE (GST_TYPE_CLAPPER_VIDEO_RENDERER,
+        gst_clapper_video_overlay_video_renderer_interface_init));
+
+static GParamSpec
+    * video_overlay_video_renderer_param_specs
+    [VIDEO_OVERLAY_VIDEO_RENDERER_PROP_LAST] = { NULL, };
+
+static void
+gst_clapper_video_overlay_video_renderer_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+  GstClapperVideoOverlayVideoRenderer *self =
+      GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (object);
+
+  switch (prop_id) {
+    case VIDEO_OVERLAY_VIDEO_RENDERER_PROP_WINDOW_HANDLE:
+      self->window_handle = g_value_get_pointer (value);
+      if (self->video_overlay)
+        gst_video_overlay_set_window_handle (self->video_overlay,
+            (guintptr) self->window_handle);
+      break;
+    case VIDEO_OVERLAY_VIDEO_RENDERER_PROP_VIDEO_SINK:
+      self->video_sink = gst_object_ref_sink (g_value_get_object (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_video_overlay_video_renderer_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec)
+{
+  GstClapperVideoOverlayVideoRenderer *self =
+      GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (object);
+
+  switch (prop_id) {
+    case VIDEO_OVERLAY_VIDEO_RENDERER_PROP_WINDOW_HANDLE:
+      g_value_set_pointer (value, self->window_handle);
+      break;
+    case VIDEO_OVERLAY_VIDEO_RENDERER_PROP_VIDEO_SINK:
+      g_value_set_object (value, self->video_sink);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_video_overlay_video_renderer_finalize (GObject * object)
+{
+  GstClapperVideoOverlayVideoRenderer *self =
+      GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (object);
+
+  if (self->video_overlay)
+    gst_object_unref (self->video_overlay);
+
+  if (self->video_sink)
+    gst_object_unref (self->video_sink);
+
+  G_OBJECT_CLASS
+      (gst_clapper_video_overlay_video_renderer_parent_class)->finalize (object);
+}
+
+static void
+    gst_clapper_video_overlay_video_renderer_class_init
+    (GstClapperVideoOverlayVideoRendererClass * klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  gobject_class->set_property =
+      gst_clapper_video_overlay_video_renderer_set_property;
+  gobject_class->get_property =
+      gst_clapper_video_overlay_video_renderer_get_property;
+  gobject_class->finalize = gst_clapper_video_overlay_video_renderer_finalize;
+
+  video_overlay_video_renderer_param_specs
+      [VIDEO_OVERLAY_VIDEO_RENDERER_PROP_WINDOW_HANDLE] =
+      g_param_spec_pointer ("window-handle", "Window Handle",
+      "Window handle to embed the video into",
+      G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
+
+  video_overlay_video_renderer_param_specs
+      [VIDEO_OVERLAY_VIDEO_RENDERER_PROP_VIDEO_SINK] =
+      g_param_spec_object ("video-sink", "Video Sink",
+      "the video output element to use (NULL = default sink)",
+      GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (gobject_class,
+      VIDEO_OVERLAY_VIDEO_RENDERER_PROP_LAST,
+      video_overlay_video_renderer_param_specs);
+}
+
+static void
+    gst_clapper_video_overlay_video_renderer_init
+    (GstClapperVideoOverlayVideoRenderer * self)
+{
+  self->x = self->y = self->width = self->height = -1;
+  self->video_sink = NULL;
+}
+
+static GstElement *gst_clapper_video_overlay_video_renderer_create_video_sink
+    (GstClapperVideoRenderer * iface, GstClapper * clapper)
+{
+  GstElement *video_overlay;
+  GstClapperVideoOverlayVideoRenderer *self =
+      GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (iface);
+
+  if (self->video_overlay)
+    gst_object_unref (self->video_overlay);
+
+  video_overlay = gst_clapper_get_pipeline (clapper);
+  g_return_val_if_fail (GST_IS_VIDEO_OVERLAY (video_overlay), NULL);
+
+  self->video_overlay = GST_VIDEO_OVERLAY (video_overlay);
+
+  gst_video_overlay_set_window_handle (self->video_overlay,
+      (guintptr) self->window_handle);
+  if (self->width != -1 || self->height != -1)
+    gst_video_overlay_set_render_rectangle (self->video_overlay, self->x,
+        self->y, self->width, self->height);
+
+  return self->video_sink;
+}
+
+static void
+    gst_clapper_video_overlay_video_renderer_interface_init
+    (GstClapperVideoRendererInterface * iface)
+{
+  iface->create_video_sink =
+      gst_clapper_video_overlay_video_renderer_create_video_sink;
+}
+
+/**
+ * gst_clapper_video_overlay_video_renderer_new:
+ * @window_handle: (allow-none): Window handle to use or %NULL
+ *
+ * Returns: (transfer full):
+ */
+GstClapperVideoRenderer *
+gst_clapper_video_overlay_video_renderer_new (gpointer window_handle)
+{
+  return g_object_new (GST_TYPE_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER,
+      "window-handle", window_handle, NULL);
+}
+
+/**
+ * gst_clapper_video_overlay_video_renderer_new_with_sink:
+ * @window_handle: (allow-none): Window handle to use or %NULL
+ * @video_sink: (transfer floating): the custom video_sink element to be set for the video renderer
+ *
+ * Returns: (transfer full): clapper video renderer
+ */
+GstClapperVideoRenderer *
+gst_clapper_video_overlay_video_renderer_new_with_sink (gpointer window_handle,
+    GstElement * video_sink)
+{
+  return g_object_new (GST_TYPE_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER,
+      "window-handle", window_handle, "video-sink", video_sink, NULL);
+}
+
+/**
+ * gst_clapper_video_overlay_video_renderer_set_window_handle:
+ * @self: #GstClapperVideoRenderer instance
+ * @window_handle: handle referencing to the platform specific window
+ *
+ * Sets the platform specific window handle into which the video
+ * should be rendered
+ **/
+void gst_clapper_video_overlay_video_renderer_set_window_handle
+    (GstClapperVideoOverlayVideoRenderer * self, gpointer window_handle)
+{
+  g_return_if_fail (GST_IS_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (self));
+
+  g_object_set (self, "window-handle", window_handle, NULL);
+}
+
+/**
+ * gst_clapper_video_overlay_video_renderer_get_window_handle:
+ * @self: #GstClapperVideoRenderer instance
+ *
+ * Returns: (transfer none): The currently set, platform specific window
+ * handle
+ */
+gpointer
+    gst_clapper_video_overlay_video_renderer_get_window_handle
+    (GstClapperVideoOverlayVideoRenderer * self) {
+  gpointer window_handle;
+
+  g_return_val_if_fail (GST_IS_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (self),
+      NULL);
+
+  g_object_get (self, "window-handle", &window_handle, NULL);
+
+  return window_handle;
+}
+
+/**
+ * gst_clapper_video_overlay_video_renderer_expose:
+ * @self: a #GstClapperVideoOverlayVideoRenderer instance.
+ *
+ * Tell an overlay that it has been exposed. This will redraw the current frame
+ * in the drawable even if the pipeline is PAUSED.
+ */
+void gst_clapper_video_overlay_video_renderer_expose
+    (GstClapperVideoOverlayVideoRenderer * self)
+{
+  g_return_if_fail (GST_IS_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (self));
+
+  if (self->video_overlay)
+    gst_video_overlay_expose (self->video_overlay);
+}
+
+/**
+ * gst_clapper_video_overlay_video_renderer_set_render_rectangle:
+ * @self: a #GstClapperVideoOverlayVideoRenderer instance
+ * @x: the horizontal offset of the render area inside the window
+ * @y: the vertical offset of the render area inside the window
+ * @width: the width of the render area inside the window
+ * @height: the height of the render area inside the window
+ *
+ * Configure a subregion as a video target within the window set by
+ * gst_clapper_video_overlay_video_renderer_set_window_handle(). If this is not
+ * used or not supported the video will fill the area of the window set as the
+ * overlay to 100%. By specifying the rectangle, the video can be overlaid to
+ * a specific region of that window only. After setting the new rectangle one
+ * should call gst_clapper_video_overlay_video_renderer_expose() to force a
+ * redraw. To unset the region pass -1 for the @width and @height parameters.
+ *
+ * This method is needed for non fullscreen video overlay in UI toolkits that
+ * do not support subwindows.
+ *
+ */
+void gst_clapper_video_overlay_video_renderer_set_render_rectangle
+    (GstClapperVideoOverlayVideoRenderer * self, gint x, gint y, gint width,
+    gint height)
+{
+  g_return_if_fail (GST_IS_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (self));
+
+  self->x = x;
+  self->y = y;
+  self->width = width;
+  self->height = height;
+
+  if (self->video_overlay)
+    gst_video_overlay_set_render_rectangle (self->video_overlay,
+        x, y, width, height);
+}
+
+/**
+ * gst_clapper_video_overlay_video_renderer_get_render_rectangle:
+ * @self: a #GstClapperVideoOverlayVideoRenderer instance
+ * @x: (out) (allow-none): the horizontal offset of the render area inside the window
+ * @y: (out) (allow-none): the vertical offset of the render area inside the window
+ * @width: (out) (allow-none): the width of the render area inside the window
+ * @height: (out) (allow-none): the height of the render area inside the window
+ *
+ * Return the currently configured render rectangle. See gst_clapper_video_overlay_video_renderer_set_render_rectangle()
+ * for details.
+ *
+ */
+void gst_clapper_video_overlay_video_renderer_get_render_rectangle
+    (GstClapperVideoOverlayVideoRenderer * self, gint * x, gint * y,
+    gint * width, gint * height)
+{
+  g_return_if_fail (GST_IS_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER (self));
+
+  if (x)
+    *x = self->x;
+  if (y)
+    *y = self->y;
+  if (width)
+    *width = self->width;
+  if (height)
+    *height = self->height;
+}

lib/gst/clapper/gstclapper-video-overlay-video-renderer.h

@@ -0,0 +1,71 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER_H__
+#define __GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER_H__
+
+#include <gst/clapper/gstclapper-types.h>
+#include <gst/clapper/gstclapper-video-renderer.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstClapperVideoOverlayVideoRenderer
+    GstClapperVideoOverlayVideoRenderer;
+typedef struct _GstClapperVideoOverlayVideoRendererClass
+    GstClapperVideoOverlayVideoRendererClass;
+
+#define GST_TYPE_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER             (gst_clapper_video_overlay_video_renderer_get_type ())
+#define GST_IS_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER))
+#define GST_IS_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER))
+#define GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER, GstClapperVideoOverlayVideoRendererClass))
+#define GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER, GstClapperVideoOverlayVideoRenderer))
+#define GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER, GstClapperVideoOverlayVideoRendererClass))
+#define GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER_CAST(obj)        ((GstClapperVideoOverlayVideoRenderer*)(obj))
+
+GST_CLAPPER_API
+GType    gst_clapper_video_overlay_video_renderer_get_type             (void);
+
+GST_CLAPPER_API
+GstClapperVideoRenderer *
+         gst_clapper_video_overlay_video_renderer_new                  (gpointer window_handle);
+
+GST_CLAPPER_API
+GstClapperVideoRenderer *
+         gst_clapper_video_overlay_video_renderer_new_with_sink        (gpointer window_handle, GstElement *video_sink);
+
+GST_CLAPPER_API
+void     gst_clapper_video_overlay_video_renderer_set_window_handle    (GstClapperVideoOverlayVideoRenderer *self, gpointer window_handle);
+
+GST_CLAPPER_API
+gpointer gst_clapper_video_overlay_video_renderer_get_window_handle    (GstClapperVideoOverlayVideoRenderer *self);
+
+GST_CLAPPER_API
+void     gst_clapper_video_overlay_video_renderer_expose               (GstClapperVideoOverlayVideoRenderer *self);
+
+GST_CLAPPER_API
+void     gst_clapper_video_overlay_video_renderer_set_render_rectangle (GstClapperVideoOverlayVideoRenderer *self, gint x, gint y, gint width, gint height);
+
+GST_CLAPPER_API
+void     gst_clapper_video_overlay_video_renderer_get_render_rectangle (GstClapperVideoOverlayVideoRenderer *self, gint *x, gint *y, gint *width, gint *height);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_VIDEO_OVERLAY_VIDEO_RENDERER_H__ */

lib/gst/clapper/gstclapper-video-renderer-private.h

@@ -1,5 +1,7 @@
-/*
- * Copyright (C) 2022 Rafał Dzięgiel <rafostar.github@gmail.com>
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -8,7 +10,7 @@
  *
  * This library 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public
@@ -17,23 +19,15 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#pragma once
+#ifndef __GST_CLAPPER_VIDEO_RENDERER_PRIVATE_H__
+#define __GST_CLAPPER_VIDEO_RENDERER_PRIVATE_H__
 
-#include "gst/plugin/gstclapperimporter.h"
-#include "gst/plugin/handlers/gl/gstclapperglcontexthandler.h"
+#include <gst/clapper/gstclapper-video-renderer.h>
 
 G_BEGIN_DECLS
 
-#define GST_TYPE_CLAPPER_GL_IMPORTER (gst_clapper_gl_importer_get_type())
-G_DECLARE_FINAL_TYPE (GstClapperGLImporter, gst_clapper_gl_importer, GST, CLAPPER_GL_IMPORTER, GstClapperImporter)
-
-#define GST_CLAPPER_GL_IMPORTER_CAST(obj)        ((GstClapperGLImporter *)(obj))
-
-struct _GstClapperGLImporter
-{
-  GstClapperImporter parent;
-
-  GstClapperGLContextHandler *gl_handler;
-};
+G_GNUC_INTERNAL GstElement * gst_clapper_video_renderer_create_video_sink (GstClapperVideoRenderer *self, GstClapper *clapper);
 
 G_END_DECLS
+
+#endif /* __GST_CLAPPER_VIDEO_RENDERER_PRIVATE_H__ */

lib/gst/clapper/gstclapper-video-renderer.c

@@ -0,0 +1,50 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-video-renderer.h"
+#include "gstclapper-video-renderer-private.h"
+
+G_DEFINE_INTERFACE (GstClapperVideoRenderer, gst_clapper_video_renderer,
+    G_TYPE_OBJECT);
+
+static void
+gst_clapper_video_renderer_default_init (G_GNUC_UNUSED
+    GstClapperVideoRendererInterface * iface)
+{
+
+}
+
+GstElement *
+gst_clapper_video_renderer_create_video_sink (GstClapperVideoRenderer * self,
+    GstClapper * clapper)
+{
+  GstClapperVideoRendererInterface *iface;
+
+  g_return_val_if_fail (GST_IS_CLAPPER_VIDEO_RENDERER (self), NULL);
+  iface = GST_CLAPPER_VIDEO_RENDERER_GET_INTERFACE (self);
+  g_return_val_if_fail (iface->create_video_sink != NULL, NULL);
+
+  return iface->create_video_sink (self, clapper);
+}

lib/gst/clapper/gstclapper-video-renderer.h

@@ -0,0 +1,49 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_VIDEO_RENDERER_H__
+#define __GST_CLAPPER_VIDEO_RENDERER_H__
+
+#include <gst/gst.h>
+#include <gst/clapper/gstclapper-types.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstClapperVideoRenderer GstClapperVideoRenderer;
+typedef struct _GstClapperVideoRendererInterface GstClapperVideoRendererInterface;
+
+#define GST_TYPE_CLAPPER_VIDEO_RENDERER                (gst_clapper_video_renderer_get_type ())
+#define GST_CLAPPER_VIDEO_RENDERER(obj)                (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CLAPPER_VIDEO_RENDERER, GstClapperVideoRenderer))
+#define GST_IS_CLAPPER_VIDEO_RENDERER(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CLAPPER_VIDEO_RENDERER))
+#define GST_CLAPPER_VIDEO_RENDERER_GET_INTERFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_CLAPPER_VIDEO_RENDERER, GstClapperVideoRendererInterface))
+
+struct _GstClapperVideoRendererInterface {
+  GTypeInterface parent_iface;
+
+  GstElement * (*create_video_sink) (GstClapperVideoRenderer * self, GstClapper * clapper);
+};
+
+GST_CLAPPER_API
+GType        gst_clapper_video_renderer_get_type       (void);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_VIDEO_RENDERER_H__ */

lib/gst/clapper/gstclapper-visualization.c

@@ -0,0 +1,180 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2015 Brijesh Singh <brijesh.ksingh@gmail.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:gstclapper-visualization
+ * @title: GstClapperVisualization
+ * @short_description: Clapper Visualization
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-visualization.h"
+
+#include <string.h>
+
+static GMutex vis_lock;
+static GQueue vis_list = G_QUEUE_INIT;
+static guint32 vis_cookie;
+
+G_DEFINE_BOXED_TYPE (GstClapperVisualization, gst_clapper_visualization,
+    (GBoxedCopyFunc) gst_clapper_visualization_copy,
+    (GBoxedFreeFunc) gst_clapper_visualization_free);
+
+/**
+ * gst_clapper_visualization_free:
+ * @vis: #GstClapperVisualization instance
+ *
+ * Frees a #GstClapperVisualization.
+ */
+void
+gst_clapper_visualization_free (GstClapperVisualization * vis)
+{
+  g_return_if_fail (vis != NULL);
+
+  g_free (vis->name);
+  g_free (vis->description);
+  g_free (vis);
+}
+
+/**
+ * gst_clapper_visualization_copy:
+ * @vis: #GstClapperVisualization instance
+ *
+ * Makes a copy of the #GstClapperVisualization. The result must be
+ * freed using gst_clapper_visualization_free().
+ *
+ * Returns: (transfer full): an allocated copy of @vis.
+ */
+GstClapperVisualization *
+gst_clapper_visualization_copy (const GstClapperVisualization * vis)
+{
+  GstClapperVisualization *ret;
+
+  g_return_val_if_fail (vis != NULL, NULL);
+
+  ret = g_new0 (GstClapperVisualization, 1);
+  ret->name = vis->name ? g_strdup (vis->name) : NULL;
+  ret->description = vis->description ? g_strdup (vis->description) : NULL;
+
+  return ret;
+}
+
+/**
+ * gst_clapper_visualizations_free:
+ * @viss: a %NULL terminated array of #GstClapperVisualization to free
+ *
+ * Frees a %NULL terminated array of #GstClapperVisualization.
+ */
+void
+gst_clapper_visualizations_free (GstClapperVisualization ** viss)
+{
+  GstClapperVisualization **p;
+
+  g_return_if_fail (viss != NULL);
+
+  p = viss;
+  while (*p) {
+    g_free ((*p)->name);
+    g_free ((*p)->description);
+    g_free (*p);
+    p++;
+  }
+  g_free (viss);
+}
+
+static void
+gst_clapper_update_visualization_list (void)
+{
+  GList *features;
+  GList *l;
+  guint32 cookie;
+  GstClapperVisualization *vis;
+
+  g_mutex_lock (&vis_lock);
+
+  /* check if we need to update the list */
+  cookie = gst_registry_get_feature_list_cookie (gst_registry_get ());
+  if (vis_cookie == cookie) {
+    g_mutex_unlock (&vis_lock);
+    return;
+  }
+
+  /* if update is needed then first free the existing list */
+  while ((vis = g_queue_pop_head (&vis_list)))
+    gst_clapper_visualization_free (vis);
+
+  features = gst_registry_get_feature_list (gst_registry_get (),
+      GST_TYPE_ELEMENT_FACTORY);
+
+  for (l = features; l; l = l->next) {
+    GstPluginFeature *feature = l->data;
+    const gchar *klass;
+
+    klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY (feature),
+        GST_ELEMENT_METADATA_KLASS);
+
+    if (strstr (klass, "Visualization")) {
+      vis = g_new0 (GstClapperVisualization, 1);
+
+      vis->name = g_strdup (gst_plugin_feature_get_name (feature));
+      vis->description =
+          g_strdup (gst_element_factory_get_metadata (GST_ELEMENT_FACTORY
+              (feature), GST_ELEMENT_METADATA_DESCRIPTION));
+      g_queue_push_tail (&vis_list, vis);
+    }
+  }
+  gst_plugin_feature_list_free (features);
+
+  vis_cookie = cookie;
+
+  g_mutex_unlock (&vis_lock);
+}
+
+/**
+ * gst_clapper_visualizations_get:
+ *
+ * Returns: (transfer full) (array zero-terminated=1) (element-type GstClapperVisualization):
+ *  a %NULL terminated array containing all available
+ *  visualizations. Use gst_clapper_visualizations_free() after
+ *  usage.
+ */
+GstClapperVisualization **
+gst_clapper_visualizations_get (void)
+{
+  gint i = 0;
+  GList *l;
+  GstClapperVisualization **ret;
+
+  gst_clapper_update_visualization_list ();
+
+  g_mutex_lock (&vis_lock);
+  ret = g_new0 (GstClapperVisualization *, g_queue_get_length (&vis_list) + 1);
+  for (l = vis_list.head; l; l = l->next)
+    ret[i++] = gst_clapper_visualization_copy (l->data);
+  g_mutex_unlock (&vis_lock);
+
+  return ret;
+}

lib/gst/clapper/gstclapper-visualization.h

@@ -0,0 +1,61 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2015 Brijesh Singh <brijesh.ksingh@gmail.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_VISUALIZATION_H__
+#define __GST_CLAPPER_VISUALIZATION_H__
+
+#include <gst/gst.h>
+#include <gst/clapper/clapper-prelude.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstClapperVisualization GstClapperVisualization;
+/**
+ * GstClapperVisualization:
+ * @name: name of the visualization.
+ * @description: description of the visualization.
+ *
+ * A #GstClapperVisualization descriptor.
+ */
+struct _GstClapperVisualization {
+  gchar *name;
+  gchar *description;
+};
+
+GST_CLAPPER_API
+GType                      gst_clapper_visualization_get_type (void);
+
+GST_CLAPPER_API
+GstClapperVisualization *  gst_clapper_visualization_copy     (const GstClapperVisualization *vis);
+
+GST_CLAPPER_API
+void                       gst_clapper_visualization_free     (GstClapperVisualization *vis);
+
+GST_CLAPPER_API
+GstClapperVisualization ** gst_clapper_visualizations_get     (void);
+
+GST_CLAPPER_API
+void                       gst_clapper_visualizations_free    (GstClapperVisualization **viss);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_VISUALIZATION_H__ */

lib/gst/clapper/gstclapper.h

@@ -0,0 +1,318 @@
+/* GStreamer
+ *
+ * Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_H__
+#define __GST_CLAPPER_H__
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+
+#include <gst/clapper/clapper-prelude.h>
+#include <gst/clapper/gstclapper-types.h>
+#include <gst/clapper/gstclapper-signal-dispatcher.h>
+#include <gst/clapper/gstclapper-video-renderer.h>
+#include <gst/clapper/gstclapper-media-info.h>
+#include <gst/clapper/gstclapper-mpris.h>
+
+G_BEGIN_DECLS
+
+/* ClapperState */
+GST_CLAPPER_API
+GType         gst_clapper_state_get_type                (void);
+#define       GST_TYPE_CLAPPER_STATE                    (gst_clapper_state_get_type ())
+
+/**
+ * GstClapperState:
+ * @GST_CLAPPER_STATE_STOPPED: clapper is stopped.
+ * @GST_CLAPPER_STATE_BUFFERING: clapper is buffering.
+ * @GST_CLAPPER_STATE_PAUSED: clapper is paused.
+ * @GST_CLAPPER_STATE_PLAYING: clapper is currently playing a stream.
+ */
+typedef enum
+{
+  GST_CLAPPER_STATE_STOPPED,
+  GST_CLAPPER_STATE_BUFFERING,
+  GST_CLAPPER_STATE_PAUSED,
+  GST_CLAPPER_STATE_PLAYING
+} GstClapperState;
+
+GST_CLAPPER_API
+const gchar * gst_clapper_state_get_name                (GstClapperState state);
+
+/* ClapperSeekMode */
+GST_CLAPPER_API
+GType gst_clapper_seek_mode_get_type                    (void);
+#define GST_TYPE_CLAPPER_SEEK_MODE                      (gst_clapper_seek_mode_get_type ())
+
+/**
+ * GstClapperSeekMode:
+ * @GST_CLAPPER_SEEK_MODE_DEFAULT: default seek method (flush only).
+ * @GST_CLAPPER_SEEK_MODE_ACCURATE: accurate seek method.
+ * @GST_CLAPPER_SEEK_MODE_FAST: fast seek method (next keyframe).
+ */
+typedef enum
+{
+  GST_CLAPPER_SEEK_MODE_DEFAULT,
+  GST_CLAPPER_SEEK_MODE_ACCURATE,
+  GST_CLAPPER_SEEK_MODE_FAST,
+} GstClapperSeekMode;
+
+/* ClapperError */
+GST_CLAPPER_API
+GQuark        gst_clapper_error_quark                   (void);
+
+GST_CLAPPER_API
+GType         gst_clapper_error_get_type                (void);
+#define       GST_CLAPPER_ERROR                         (gst_clapper_error_quark ())
+#define       GST_TYPE_CLAPPER_ERROR                    (gst_clapper_error_get_type ())
+
+/**
+ * GstClapperError:
+ * @GST_CLAPPER_ERROR_FAILED: generic error.
+ */
+typedef enum {
+  GST_CLAPPER_ERROR_FAILED = 0
+} GstClapperError;
+
+GST_CLAPPER_API
+const gchar * gst_clapper_error_get_name                (GstClapperError error);
+
+/* ClapperColorBalanceType */
+GST_CLAPPER_API
+GType gst_clapper_color_balance_type_get_type           (void);
+#define GST_TYPE_CLAPPER_COLOR_BALANCE_TYPE             (gst_clapper_color_balance_type_get_type ())
+
+/**
+ * GstClapperColorBalanceType:
+ * @GST_CLAPPER_COLOR_BALANCE_BRIGHTNESS: brightness or black level.
+ * @GST_CLAPPER_COLOR_BALANCE_CONTRAST: contrast or luma gain.
+ * @GST_CLAPPER_COLOR_BALANCE_SATURATION: color saturation or chroma
+ * gain.
+ * @GST_CLAPPER_COLOR_BALANCE_HUE: hue or color balance.
+ */
+typedef enum
+{
+  GST_CLAPPER_COLOR_BALANCE_BRIGHTNESS,
+  GST_CLAPPER_COLOR_BALANCE_CONTRAST,
+  GST_CLAPPER_COLOR_BALANCE_SATURATION,
+  GST_CLAPPER_COLOR_BALANCE_HUE,
+} GstClapperColorBalanceType;
+
+GST_CLAPPER_API
+const gchar * gst_clapper_color_balance_type_get_name   (GstClapperColorBalanceType type);
+
+/* ClapperSnapshotFormat */
+
+/**
+ * GstClapperSnapshotFormat:
+ * @GST_CLAPPER_THUMBNAIL_RAW_NATIVE: RAW Native.
+ * @GST_CLAPPER_THUMBNAIL_RAW_xRGB: RAW xRGB.
+ * @GST_CLAPPER_THUMBNAIL_RAW_BGRx: RAW BGRx.
+ * @GST_CLAPPER_THUMBNAIL_JPG: JPG.
+ * @GST_CLAPPER_THUMBNAIL_PNG: PNG.
+ */
+typedef enum
+{
+  GST_CLAPPER_THUMBNAIL_RAW_NATIVE = 0,
+  GST_CLAPPER_THUMBNAIL_RAW_xRGB,
+  GST_CLAPPER_THUMBNAIL_RAW_BGRx,
+  GST_CLAPPER_THUMBNAIL_JPG,
+  GST_CLAPPER_THUMBNAIL_PNG
+} GstClapperSnapshotFormat;
+
+#define GST_TYPE_CLAPPER             (gst_clapper_get_type ())
+#define GST_IS_CLAPPER(obj)          (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CLAPPER))
+#define GST_IS_CLAPPER_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_CLAPPER))
+#define GST_CLAPPER_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CLAPPER, GstClapperClass))
+#define GST_CLAPPER(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CLAPPER, GstClapper))
+#define GST_CLAPPER_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_CLAPPER, GstClapperClass))
+#define GST_CLAPPER_CAST(obj)        ((GstClapper*)(obj))
+
+#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstClapper, gst_object_unref)
+#endif
+
+GST_CLAPPER_API
+GType        gst_clapper_get_type                           (void);
+
+GST_CLAPPER_API
+void         gst_clapper_gst_init                           (int *argc, char **argv[]);
+
+GST_CLAPPER_API
+GstClapper * gst_clapper_new                                (GstClapperVideoRenderer *video_renderer, GstClapperSignalDispatcher *signal_dispatcher,
+                                                                GstClapperMpris *mpris);
+
+GST_CLAPPER_API
+void         gst_clapper_play                               (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_pause                              (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_toggle_play                        (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_stop                               (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_seek                               (GstClapper *clapper, GstClockTime position);
+
+GST_CLAPPER_API
+void         gst_clapper_seek_offset                        (GstClapper *clapper, GstClockTime offset);
+
+GST_CLAPPER_API
+GstClapperState
+             gst_clapper_get_state                          (GstClapper *clapper);
+
+GST_CLAPPER_API
+GstClapperSeekMode
+             gst_clapper_get_seek_mode                      (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_seek_mode                      (GstClapper *clapper, GstClapperSeekMode mode);
+
+GST_CLAPPER_API
+void         gst_clapper_set_rate                           (GstClapper *clapper, gdouble rate);
+
+GST_CLAPPER_API
+gdouble      gst_clapper_get_rate                           (GstClapper *clapper);
+
+GST_CLAPPER_API
+gchar *      gst_clapper_get_uri                            (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_uri                            (GstClapper *clapper, const gchar *uri);
+
+GST_CLAPPER_API
+gchar *      gst_clapper_get_subtitle_uri                   (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_subtitle_uri                   (GstClapper *clapper, const gchar *uri);
+
+GST_CLAPPER_API
+GstClockTime gst_clapper_get_position                       (GstClapper *clapper);
+
+GST_CLAPPER_API
+GstClockTime gst_clapper_get_duration                       (GstClapper *clapper);
+
+GST_CLAPPER_API
+gdouble      gst_clapper_get_volume                         (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_volume                         (GstClapper *clapper, gdouble val);
+
+GST_CLAPPER_API
+gboolean     gst_clapper_get_mute                           (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_mute                           (GstClapper *clapper, gboolean val);
+
+GST_CLAPPER_API
+GstElement * gst_clapper_get_pipeline                       (GstClapper *clapper);
+
+GST_CLAPPER_API
+GstClapperMpris *
+             gst_clapper_get_mpris                          (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_video_track_enabled            (GstClapper *clapper, gboolean enabled);
+
+GST_CLAPPER_API
+void         gst_clapper_set_audio_track_enabled            (GstClapper *clapper, gboolean enabled);
+
+GST_CLAPPER_API
+void         gst_clapper_set_subtitle_track_enabled         (GstClapper *clapper, gboolean enabled);
+
+GST_CLAPPER_API
+gboolean     gst_clapper_set_audio_track                    (GstClapper *clapper, gint stream_index);
+
+GST_CLAPPER_API
+gboolean     gst_clapper_set_video_track                    (GstClapper *clapper, gint stream_index);
+
+GST_CLAPPER_API
+gboolean     gst_clapper_set_subtitle_track                 (GstClapper *clapper, gint stream_index);
+
+GST_CLAPPER_API
+GstClapperMediaInfo *
+             gst_clapper_get_media_info                     (GstClapper *clapper);
+
+GST_CLAPPER_API
+GstClapperAudioInfo *
+             gst_clapper_get_current_audio_track            (GstClapper *clapper);
+
+GST_CLAPPER_API
+GstClapperVideoInfo *
+             gst_clapper_get_current_video_track            (GstClapper *clapper);
+
+GST_CLAPPER_API
+GstClapperSubtitleInfo *
+             gst_clapper_get_current_subtitle_track         (GstClapper *clapper);
+
+GST_CLAPPER_API
+gboolean     gst_clapper_set_visualization                  (GstClapper *clapper, const gchar *name);
+
+GST_CLAPPER_API
+void         gst_clapper_set_visualization_enabled          (GstClapper *clapper, gboolean enabled);
+
+GST_CLAPPER_API
+gchar *      gst_clapper_get_current_visualization          (GstClapper *clapper);
+
+GST_CLAPPER_API
+gboolean     gst_clapper_has_color_balance                  (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_color_balance                  (GstClapper *clapper, GstClapperColorBalanceType type, gdouble value);
+
+GST_CLAPPER_API
+gdouble      gst_clapper_get_color_balance                  (GstClapper *clapper, GstClapperColorBalanceType type);
+
+GST_CLAPPER_API
+GstVideoMultiviewFramePacking
+             gst_clapper_get_multiview_mode                 (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_multiview_mode                 (GstClapper *clapper, GstVideoMultiviewFramePacking mode);
+
+GST_CLAPPER_API
+GstVideoMultiviewFlags
+             gst_clapper_get_multiview_flags                (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_multiview_flags                (GstClapper *clapper, GstVideoMultiviewFlags flags);
+
+GST_CLAPPER_API
+gint64       gst_clapper_get_audio_video_offset             (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_audio_video_offset             (GstClapper *clapper, gint64 offset);
+
+GST_CLAPPER_API
+gint64       gst_clapper_get_subtitle_video_offset          (GstClapper *clapper);
+
+GST_CLAPPER_API
+void         gst_clapper_set_subtitle_video_offset          (GstClapper *clapper, gint64 offset);
+
+GST_CLAPPER_API
+GstSample *  gst_clapper_get_video_snapshot                 (GstClapper *clapper, GstClapperSnapshotFormat format, const GstStructure *config);
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_H__ */

lib/gst/clapper/gtk4/gstclapperglsink.c

@@ -0,0 +1,759 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2020 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:gstclapperglsink
+ * @title: GstClapperGLSink
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gl/gstglfuncs.h>
+
+#include "gstclapperglsink.h"
+#include "gstgtkutils.h"
+
+GST_DEBUG_CATEGORY (gst_debug_clapper_gl_sink);
+#define GST_CAT_DEFAULT gst_debug_clapper_gl_sink
+
+#define GST_CLAPPER_GL_SINK_CAPS \
+    "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "              \
+    "format = (string) RGBA, "                                          \
+    "width = " GST_VIDEO_SIZE_RANGE ", "                                \
+    "height = " GST_VIDEO_SIZE_RANGE ", "                               \
+    "framerate = " GST_VIDEO_FPS_RANGE ", "                             \
+    "texture-target = (string) { 2D, external-oes } "                   \
+    " ; "                                                               \
+    "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY ","                \
+    GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION "), "           \
+    "format = (string) RGBA, "                                          \
+    "width = " GST_VIDEO_SIZE_RANGE ", "                                \
+    "height = " GST_VIDEO_SIZE_RANGE ", "                               \
+    "framerate = " GST_VIDEO_FPS_RANGE ", "                             \
+    "texture-target = (string) { 2D, external-oes } "
+
+static GstStaticPadTemplate gst_clapper_gl_sink_template =
+    GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_CLAPPER_GL_SINK_CAPS));
+
+static void gst_clapper_gl_sink_finalize (GObject * object);
+static void gst_clapper_gl_sink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * param_spec);
+static void gst_clapper_gl_sink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * param_spec);
+
+static gboolean gst_clapper_gl_sink_propose_allocation (GstBaseSink * bsink,
+    GstQuery * query);
+static gboolean gst_clapper_gl_sink_query (GstBaseSink * bsink, GstQuery * query);
+static gboolean gst_clapper_gl_sink_start (GstBaseSink * bsink);
+static gboolean gst_clapper_gl_sink_stop (GstBaseSink * bsink);
+static GstFlowReturn gst_clapper_gl_sink_wait_event (GstBaseSink * bsink, GstEvent * event);
+
+static GstStateChangeReturn
+gst_clapper_gl_sink_change_state (GstElement * element,
+    GstStateChange transition);
+
+static void gst_clapper_gl_sink_get_times (GstBaseSink * bsink, GstBuffer * buf,
+    GstClockTime * start, GstClockTime * end);
+static GstCaps *gst_clapper_gl_sink_get_caps (GstBaseSink * bsink,
+    GstCaps * filter);
+static gboolean gst_clapper_gl_sink_set_caps (GstBaseSink * bsink,
+    GstCaps * caps);
+static GstFlowReturn gst_clapper_gl_sink_show_frame (GstVideoSink * bsink,
+    GstBuffer * buf);
+
+static void
+gst_clapper_gl_sink_navigation_interface_init (GstNavigationInterface * iface);
+
+#define gst_clapper_gl_sink_parent_class parent_class
+G_DEFINE_TYPE_WITH_CODE (GstClapperGLSink, gst_clapper_gl_sink,
+    GST_TYPE_VIDEO_SINK,
+    G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
+        gst_clapper_gl_sink_navigation_interface_init);
+    GST_DEBUG_CATEGORY_INIT (gst_debug_clapper_gl_sink,
+        "clapperglsink", 0, "Clapper GL Sink"));
+
+static void
+gst_clapper_gl_sink_class_init (GstClapperGLSinkClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseSinkClass *gstbasesink_class;
+  GstVideoSinkClass *gstvideosink_class;
+  GstClapperGLSinkClass *gstclapperglsink_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasesink_class = (GstBaseSinkClass *) klass;
+  gstvideosink_class = (GstVideoSinkClass *) klass;
+  gstclapperglsink_class = (GstClapperGLSinkClass *) klass;
+
+  gobject_class->set_property = gst_clapper_gl_sink_set_property;
+  gobject_class->get_property = gst_clapper_gl_sink_get_property;
+  gobject_class->finalize = gst_clapper_gl_sink_finalize;
+
+  g_object_class_install_property (gobject_class, PROP_WIDGET,
+      g_param_spec_object ("widget", "GTK Widget",
+          "The GtkWidget to place in the widget hierarchy "
+          "(must only be get from the GTK main thread)",
+          GTK_TYPE_WIDGET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  gst_gtk_install_shared_properties (gobject_class);
+
+  gstelement_class->change_state = gst_clapper_gl_sink_change_state;
+
+  gstbasesink_class->get_caps = gst_clapper_gl_sink_get_caps;
+  gstbasesink_class->set_caps = gst_clapper_gl_sink_set_caps;
+  gstbasesink_class->get_times = gst_clapper_gl_sink_get_times;
+  gstbasesink_class->propose_allocation = gst_clapper_gl_sink_propose_allocation;
+  gstbasesink_class->query = gst_clapper_gl_sink_query;
+  gstbasesink_class->start = gst_clapper_gl_sink_start;
+  gstbasesink_class->stop = gst_clapper_gl_sink_stop;
+  gstbasesink_class->wait_event = gst_clapper_gl_sink_wait_event;
+
+  gstvideosink_class->show_frame = gst_clapper_gl_sink_show_frame;
+
+  gstclapperglsink_class->create_widget = gtk_clapper_gl_widget_new;
+  gstclapperglsink_class->window_title = "GTK4 GL Renderer";
+
+  gst_element_class_set_metadata (gstelement_class,
+      "GTK4 GL Video Sink",
+      "Sink/Video", "A video sink that renders to a GtkWidget using OpenGL",
+      "Matthew Waters <matthew@centricular.com>, "
+      "Rafał Dzięgiel <rafostar.github@gmail.com>");
+
+  gst_element_class_add_static_pad_template (gstelement_class,
+      &gst_clapper_gl_sink_template);
+
+  gst_type_mark_as_plugin_api (GST_TYPE_CLAPPER_GL_SINK, 0);
+}
+
+static void
+gst_clapper_gl_sink_init (GstClapperGLSink * clapper_sink)
+{
+  clapper_sink->force_aspect_ratio = DEFAULT_FORCE_ASPECT_RATIO;
+  clapper_sink->par_n = DEFAULT_PAR_N;
+  clapper_sink->par_d = DEFAULT_PAR_D;
+  clapper_sink->keep_last_frame = DEFAULT_KEEP_LAST_FRAME;
+
+  clapper_sink->had_eos = FALSE;
+}
+
+static void
+gst_clapper_gl_sink_finalize (GObject * object)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (object);
+
+  GST_DEBUG ("Finalizing Clapper GL sink");
+
+  GST_OBJECT_LOCK (clapper_sink);
+  if (clapper_sink->window && clapper_sink->window_destroy_id)
+    g_signal_handler_disconnect (clapper_sink->window, clapper_sink->window_destroy_id);
+  if (clapper_sink->widget && clapper_sink->widget_destroy_id)
+    g_signal_handler_disconnect (clapper_sink->widget, clapper_sink->widget_destroy_id);
+
+  g_clear_object (&clapper_sink->widget);
+  GST_OBJECT_UNLOCK (clapper_sink);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+widget_destroy_cb (GtkWidget * widget, GstClapperGLSink * clapper_sink)
+{
+  GST_OBJECT_LOCK (clapper_sink);
+  g_clear_object (&clapper_sink->widget);
+  GST_OBJECT_UNLOCK (clapper_sink);
+}
+
+static void
+window_destroy_cb (GtkWidget * widget, GstClapperGLSink * clapper_sink)
+{
+  GST_OBJECT_LOCK (clapper_sink);
+  if (clapper_sink->widget) {
+    if (clapper_sink->widget_destroy_id) {
+      g_signal_handler_disconnect (clapper_sink->widget,
+          clapper_sink->widget_destroy_id);
+      clapper_sink->widget_destroy_id = 0;
+    }
+    g_clear_object (&clapper_sink->widget);
+  }
+  clapper_sink->window = NULL;
+  GST_OBJECT_UNLOCK (clapper_sink);
+}
+
+static GtkClapperGLWidget *
+gst_clapper_gl_sink_get_widget (GstClapperGLSink * clapper_sink)
+{
+  if (clapper_sink->widget != NULL)
+    return clapper_sink->widget;
+
+  /* Ensure GTK is initialized, this has no side effect if it was already
+   * initialized. Also, we do that lazily, so the application can be first */
+  if (!gtk_init_check ()) {
+    GST_ERROR_OBJECT (clapper_sink, "Could not ensure GTK initialization.");
+    return NULL;
+  }
+
+  g_assert (GST_CLAPPER_GL_SINK_GET_CLASS (clapper_sink)->create_widget);
+  clapper_sink->widget = (GtkClapperGLWidget *)
+      GST_CLAPPER_GL_SINK_GET_CLASS (clapper_sink)->create_widget ();
+
+  g_object_bind_property (clapper_sink, "force-aspect-ratio", clapper_sink->widget,
+      "force-aspect-ratio", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
+  g_object_bind_property (clapper_sink, "pixel-aspect-ratio", clapper_sink->widget,
+      "pixel-aspect-ratio", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
+  g_object_bind_property (clapper_sink, "keep-last-frame", clapper_sink->widget,
+      "keep-last-frame", G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
+
+  /* Take the floating ref, other wise the destruction of the container will
+   * make this widget disappear possibly before we are done. */
+  gst_object_ref_sink (clapper_sink->widget);
+
+  clapper_sink->widget_destroy_id = g_signal_connect (clapper_sink->widget, "destroy",
+      G_CALLBACK (widget_destroy_cb), clapper_sink);
+
+  /* back pointer */
+  gtk_clapper_gl_widget_set_element (GTK_CLAPPER_GL_WIDGET (clapper_sink->widget),
+      GST_ELEMENT (clapper_sink));
+
+  return clapper_sink->widget;
+}
+
+static void
+gst_clapper_gl_sink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (object);
+
+  switch (prop_id) {
+    case PROP_WIDGET:
+    {
+      GObject *widget = NULL;
+
+      GST_OBJECT_LOCK (clapper_sink);
+      if (clapper_sink->widget != NULL)
+        widget = G_OBJECT (clapper_sink->widget);
+      GST_OBJECT_UNLOCK (clapper_sink);
+
+      if (!widget)
+        widget =
+            gst_gtk_invoke_on_main ((GThreadFunc) gst_clapper_gl_sink_get_widget,
+            clapper_sink);
+
+      g_value_set_object (value, widget);
+      break;
+    }
+    case PROP_FORCE_ASPECT_RATIO:
+      g_value_set_boolean (value, clapper_sink->force_aspect_ratio);
+      break;
+    case PROP_PIXEL_ASPECT_RATIO:
+      gst_value_set_fraction (value, clapper_sink->par_n, clapper_sink->par_d);
+      break;
+    case PROP_KEEP_LAST_FRAME:
+      g_value_set_boolean (value, clapper_sink->keep_last_frame);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_gl_sink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (object);
+
+  switch (prop_id) {
+    case PROP_FORCE_ASPECT_RATIO:
+      clapper_sink->force_aspect_ratio = g_value_get_boolean (value);
+      break;
+    case PROP_PIXEL_ASPECT_RATIO:
+      clapper_sink->par_n = gst_value_get_fraction_numerator (value);
+      clapper_sink->par_d = gst_value_get_fraction_denominator (value);
+      break;
+    case PROP_KEEP_LAST_FRAME:
+      clapper_sink->keep_last_frame = g_value_get_boolean (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_gl_sink_navigation_send_event (GstNavigation * navigation,
+    GstStructure * structure)
+{
+  GstClapperGLSink *sink = GST_CLAPPER_GL_SINK (navigation);
+  GstEvent *event;
+  GstPad *pad;
+
+  event = gst_event_new_navigation (structure);
+  pad = gst_pad_get_peer (GST_VIDEO_SINK_PAD (sink));
+
+  GST_TRACE_OBJECT (sink, "navigation event %" GST_PTR_FORMAT, structure);
+
+  if (GST_IS_PAD (pad) && GST_IS_EVENT (event)) {
+    if (!gst_pad_send_event (pad, gst_event_ref (event))) {
+      /* If upstream didn't handle the event we'll post a message with it
+       * for the application in case it wants to do something with it */
+      gst_element_post_message (GST_ELEMENT_CAST (sink),
+          gst_navigation_message_new_event (GST_OBJECT_CAST (sink), event));
+    }
+    gst_event_unref (event);
+    gst_object_unref (pad);
+  }
+}
+
+static void
+gst_clapper_gl_sink_navigation_interface_init (GstNavigationInterface * iface)
+{
+  iface->send_event = gst_clapper_gl_sink_navigation_send_event;
+}
+
+static gboolean
+gst_clapper_gl_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (bsink);
+  GstBufferPool *pool = NULL;
+  GstStructure *config;
+  GstCaps *caps;
+  GstVideoInfo info;
+  guint size;
+  gboolean need_pool;
+  GstStructure *allocation_meta = NULL;
+  gint display_width, display_height;
+
+  if (!clapper_sink->display || !clapper_sink->context)
+    return FALSE;
+
+  gst_query_parse_allocation (query, &caps, &need_pool);
+
+  if (caps == NULL)
+    goto no_caps;
+
+  if (!gst_video_info_from_caps (&info, caps))
+    goto invalid_caps;
+
+  /* the normal size of a frame */
+  size = info.size;
+
+  if (need_pool) {
+    GST_DEBUG_OBJECT (clapper_sink, "create new pool");
+    pool = gst_gl_buffer_pool_new (clapper_sink->context);
+
+    config = gst_buffer_pool_get_config (pool);
+    gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
+    gst_buffer_pool_config_add_option (config,
+        GST_BUFFER_POOL_OPTION_GL_SYNC_META);
+
+    if (!gst_buffer_pool_set_config (pool, config)) {
+      gst_object_unref (pool);
+      goto config_failed;
+    }
+  }
+
+  /* we need at least 2 buffer because we hold on to the last one */
+  gst_query_add_allocation_pool (query, pool, size, 2, 0);
+  if (pool)
+    gst_object_unref (pool);
+
+  GST_OBJECT_LOCK (clapper_sink);
+  display_width = clapper_sink->display_width;
+  display_height = clapper_sink->display_height;
+  GST_OBJECT_UNLOCK (clapper_sink);
+
+  if (display_width != 0 && display_height != 0) {
+    GST_DEBUG_OBJECT (clapper_sink, "sending alloc query with size %dx%d",
+        display_width, display_height);
+    allocation_meta = gst_structure_new ("GstVideoOverlayCompositionMeta",
+        "width", G_TYPE_UINT, display_width,
+        "height", G_TYPE_UINT, display_height, NULL);
+  }
+
+  gst_query_add_allocation_meta (query,
+      GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, allocation_meta);
+
+  if (allocation_meta)
+    gst_structure_free (allocation_meta);
+
+  /* we also support various metadata */
+  gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
+
+  if (clapper_sink->context->gl_vtable->FenceSync)
+    gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
+
+  return TRUE;
+
+  /* ERRORS */
+no_caps:
+  {
+    GST_DEBUG_OBJECT (bsink, "no caps specified");
+    return FALSE;
+  }
+invalid_caps:
+  {
+    GST_DEBUG_OBJECT (bsink, "invalid caps specified");
+    return FALSE;
+  }
+config_failed:
+  {
+    GST_DEBUG_OBJECT (bsink, "failed setting config");
+    return FALSE;
+  }
+}
+
+static gboolean
+gst_clapper_gl_sink_query (GstBaseSink * bsink, GstQuery * query)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (bsink);
+  gboolean res = FALSE;
+
+  switch (GST_QUERY_TYPE (query)) {
+    case GST_QUERY_CONTEXT:
+      res = gst_gl_handle_context_query ((GstElement *) clapper_sink, query,
+          clapper_sink->display, clapper_sink->context, clapper_sink->gtk_context);
+      break;
+    default:
+      res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
+      break;
+  }
+
+  return res;
+}
+
+static gboolean
+gst_clapper_gl_sink_start_on_main (GstBaseSink * bsink)
+{
+  GstClapperGLSink *gst_sink = GST_CLAPPER_GL_SINK (bsink);
+  GstClapperGLSinkClass *klass = GST_CLAPPER_GL_SINK_GET_CLASS (bsink);
+  GtkWidget *toplevel;
+  GtkRoot *root;
+
+  if (gst_clapper_gl_sink_get_widget (gst_sink) == NULL)
+    return FALSE;
+
+  /* After this point, clapper_sink->widget will always be set */
+
+  root = gtk_widget_get_root (GTK_WIDGET (gst_sink->widget));
+  if (!GTK_IS_ROOT (root)) {
+    GtkWidget *parent = gtk_widget_get_parent (GTK_WIDGET (gst_sink->widget));
+    if (parent) {
+      GtkWidget *temp_parent;
+      while ((temp_parent = gtk_widget_get_parent (parent)))
+        parent = temp_parent;
+    }
+    toplevel = (parent) ? parent : GTK_WIDGET (gst_sink->widget);
+
+    /* sanity check */
+    g_assert (klass->window_title);
+
+    /* User did not add widget its own UI, let's popup a new GtkWindow to
+     * make gst-launch-1.0 work. */
+    gst_sink->window = gtk_window_new ();
+    gtk_window_set_default_size (GTK_WINDOW (gst_sink->window), 640, 480);
+    gtk_window_set_title (GTK_WINDOW (gst_sink->window), klass->window_title);
+    gtk_window_set_child (GTK_WINDOW (gst_sink->window), toplevel);
+
+    gst_sink->window_destroy_id = g_signal_connect (
+        GTK_WINDOW (gst_sink->window),
+        "destroy", G_CALLBACK (window_destroy_cb), gst_sink);
+  }
+
+  return TRUE;
+}
+
+static gboolean
+gst_clapper_gl_sink_start (GstBaseSink * bsink)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (bsink);
+  GtkClapperGLWidget *clapper_widget;
+
+  if (!(! !gst_gtk_invoke_on_main ((GThreadFunc) (GCallback)
+      gst_clapper_gl_sink_start_on_main, bsink)))
+    return FALSE;
+
+  /* After this point, clapper_sink->widget will always be set */
+  clapper_widget = GTK_CLAPPER_GL_WIDGET (clapper_sink->widget);
+
+  if (!gtk_clapper_gl_widget_init_winsys (clapper_widget)) {
+    GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
+            "Failed to initialize OpenGL with GTK"), (NULL));
+    return FALSE;
+  }
+
+  if (!clapper_sink->display)
+    clapper_sink->display = gtk_clapper_gl_widget_get_display (clapper_widget);
+  if (!clapper_sink->context)
+    clapper_sink->context = gtk_clapper_gl_widget_get_context (clapper_widget);
+  if (!clapper_sink->gtk_context)
+    clapper_sink->gtk_context = gtk_clapper_gl_widget_get_gtk_context (clapper_widget);
+
+  if (!clapper_sink->display || !clapper_sink->context || !clapper_sink->gtk_context) {
+    GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
+            "Failed to retrieve OpenGL context from GTK"), (NULL));
+    return FALSE;
+  }
+
+  gst_gl_element_propagate_display_context (GST_ELEMENT (bsink),
+      clapper_sink->display);
+
+  return TRUE;
+}
+
+static gboolean
+gst_clapper_gl_sink_stop_on_main (GstBaseSink * bsink)
+{
+  GstClapperGLSink *gst_sink = GST_CLAPPER_GL_SINK (bsink);
+
+  if (gst_sink->window) {
+    gtk_window_destroy (GTK_WINDOW (gst_sink->window));
+    gst_sink->window = NULL;
+    gst_sink->widget = NULL;
+  }
+
+  return TRUE;
+}
+
+static gboolean
+gst_clapper_gl_sink_stop (GstBaseSink * bsink)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (bsink);
+
+  if (clapper_sink->display) {
+    gst_object_unref (clapper_sink->display);
+    clapper_sink->display = NULL;
+  }
+  if (clapper_sink->context) {
+    gst_object_unref (clapper_sink->context);
+    clapper_sink->context = NULL;
+  }
+  if (clapper_sink->gtk_context) {
+    gst_object_unref (clapper_sink->gtk_context);
+    clapper_sink->gtk_context = NULL;
+  }
+  if (clapper_sink->window)
+    return ! !gst_gtk_invoke_on_main ((GThreadFunc) (GCallback)
+        gst_clapper_gl_sink_stop_on_main, bsink);
+
+  return TRUE;
+}
+
+static void
+gst_gtk_window_show_all_and_unref (GtkWidget * window)
+{
+  gtk_window_present (GTK_WINDOW (window));
+  g_object_unref (window);
+}
+
+static GstStateChangeReturn
+gst_clapper_gl_sink_change_state (GstElement * element, GstStateChange transition)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (element);
+  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+
+  GST_DEBUG_OBJECT (element, "changing state: %s => %s",
+      gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
+      gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+  if (ret == GST_STATE_CHANGE_FAILURE)
+    return ret;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+      GST_OBJECT_LOCK (clapper_sink);
+      clapper_sink->had_eos = FALSE;
+      if (clapper_sink->widget) {
+        GTK_CLAPPER_GL_WIDGET_LOCK (clapper_sink->widget);
+        clapper_sink->widget->ignore_buffers = FALSE;
+        GTK_CLAPPER_GL_WIDGET_UNLOCK (clapper_sink->widget);
+      }
+      GST_OBJECT_UNLOCK (clapper_sink);
+      break;
+    case GST_STATE_CHANGE_READY_TO_PAUSED:{
+      GtkWindow *window = NULL;
+
+      GST_OBJECT_LOCK (clapper_sink);
+      if (clapper_sink->window)
+        window = g_object_ref (GTK_WINDOW (clapper_sink->window));
+      GST_OBJECT_UNLOCK (clapper_sink);
+
+      if (window) {
+        gst_gtk_invoke_on_main ((GThreadFunc) (GCallback)
+            gst_gtk_window_show_all_and_unref, window);
+      }
+      break;
+    }
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      GST_OBJECT_LOCK (clapper_sink);
+      if (clapper_sink->widget) {
+        GTK_CLAPPER_GL_WIDGET_LOCK (clapper_sink->widget);
+        clapper_sink->widget->ignore_buffers =
+            !clapper_sink->had_eos || !clapper_sink->keep_last_frame;
+        GTK_CLAPPER_GL_WIDGET_UNLOCK (clapper_sink->widget);
+      }
+      GST_OBJECT_UNLOCK (clapper_sink);
+      /* Fall through to render black bg */
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      GST_OBJECT_LOCK (clapper_sink);
+      if (clapper_sink->widget)
+        gtk_clapper_gl_widget_set_buffer (clapper_sink->widget, NULL);
+      GST_OBJECT_UNLOCK (clapper_sink);
+      break;
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static void
+gst_clapper_gl_sink_get_times (GstBaseSink * bsink, GstBuffer * buf,
+    GstClockTime * start, GstClockTime * end)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (bsink);
+
+  if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
+    *start = GST_BUFFER_TIMESTAMP (buf);
+    if (GST_BUFFER_DURATION_IS_VALID (buf))
+      *end = *start + GST_BUFFER_DURATION (buf);
+    else {
+      if (GST_VIDEO_INFO_FPS_N (&clapper_sink->v_info) > 0) {
+        *end = *start +
+            gst_util_uint64_scale_int (GST_SECOND,
+            GST_VIDEO_INFO_FPS_D (&clapper_sink->v_info),
+            GST_VIDEO_INFO_FPS_N (&clapper_sink->v_info));
+      }
+    }
+  }
+}
+
+static GstCaps *
+gst_clapper_gl_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
+{
+  GstCaps *tmp = NULL;
+  GstCaps *result = NULL;
+
+  tmp = gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (bsink));
+
+  if (filter) {
+    GST_DEBUG_OBJECT (bsink, "intersecting with filter caps %" GST_PTR_FORMAT,
+        filter);
+
+    result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
+    gst_caps_unref (tmp);
+  } else {
+    result = tmp;
+  }
+
+  result = gst_gl_overlay_compositor_add_caps (result);
+
+  GST_DEBUG_OBJECT (bsink, "returning caps: %" GST_PTR_FORMAT, result);
+
+  return result;
+}
+
+static gboolean
+gst_clapper_gl_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (bsink);
+  gboolean res = FALSE;
+
+  GST_DEBUG ("set caps with %" GST_PTR_FORMAT, caps);
+
+  if (!gst_video_info_from_caps (&clapper_sink->v_info, caps))
+    return FALSE;
+
+  GST_OBJECT_LOCK (clapper_sink);
+
+  if (clapper_sink->widget == NULL) {
+    GST_OBJECT_UNLOCK (clapper_sink);
+    GST_ELEMENT_ERROR (clapper_sink, RESOURCE, NOT_FOUND,
+        ("%s", "Output widget was destroyed"), (NULL));
+    return FALSE;
+  }
+
+  if (!gtk_clapper_gl_widget_set_format (clapper_sink->widget, &clapper_sink->v_info)) {
+    GST_OBJECT_UNLOCK (clapper_sink);
+    return FALSE;
+  }
+
+  res = gtk_clapper_gl_widget_update_output_format (clapper_sink->widget, caps);
+  GST_OBJECT_UNLOCK (clapper_sink);
+
+  return res;
+}
+
+static GstFlowReturn
+gst_clapper_gl_sink_wait_event (GstBaseSink * bsink, GstEvent * event)
+{
+  GstClapperGLSink *clapper_sink = GST_CLAPPER_GL_SINK (bsink);
+  GstFlowReturn ret;
+
+  ret = GST_BASE_SINK_CLASS (parent_class)->wait_event (bsink, event);
+
+  switch (event->type) {
+    case GST_EVENT_EOS:
+      if (ret == GST_FLOW_OK) {
+        GST_OBJECT_LOCK (clapper_sink);
+        clapper_sink->had_eos = TRUE;
+        GST_OBJECT_UNLOCK (clapper_sink);
+      }
+      break;
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static GstFlowReturn
+gst_clapper_gl_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
+{
+  GstClapperGLSink *clapper_sink;
+
+  GST_TRACE ("rendering buffer:%p", buf);
+
+  clapper_sink = GST_CLAPPER_GL_SINK (vsink);
+
+  GST_OBJECT_LOCK (clapper_sink);
+
+  if (clapper_sink->widget == NULL) {
+    GST_OBJECT_UNLOCK (clapper_sink);
+    GST_ELEMENT_ERROR (clapper_sink, RESOURCE, NOT_FOUND,
+        ("%s", "Output widget was destroyed"), (NULL));
+    return GST_FLOW_ERROR;
+  }
+
+  gtk_clapper_gl_widget_set_buffer (clapper_sink->widget, buf);
+
+  GST_OBJECT_UNLOCK (clapper_sink);
+
+  return GST_FLOW_OK;
+}

lib/gst/clapper/gtk4/gstclapperglsink.h

@@ -0,0 +1,105 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2020 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_GL_SINK_H__
+#define __GST_CLAPPER_GL_SINK_H__
+
+#include <gtk/gtk.h>
+#include <gst/gst.h>
+#include <gst/video/gstvideosink.h>
+#include <gst/video/video.h>
+#include <gst/gl/gl.h>
+
+#include "gtkclapperglwidget.h"
+
+#define GST_TYPE_CLAPPER_GL_SINK            (gst_clapper_gl_sink_get_type())
+#define GST_CLAPPER_GL_SINK(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CLAPPER_GL_SINK,GstClapperGLSink))
+#define GST_CLAPPER_GL_SINK_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CLAPPER_GL_SINK,GstClapperGLClass))
+#define GST_CLAPPER_GL_SINK_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CLAPPER_GL_SINK, GstClapperGLSinkClass))
+#define GST_IS_CLAPPER_GL_SINK(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CLAPPER_GL_SINK))
+#define GST_IS_CLAPPER_GL_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CLAPPER_GL_SINK))
+#define GST_CLAPPER_GL_SINK_CAST(obj)       ((GstClapperGLSink*)(obj))
+
+G_BEGIN_DECLS
+typedef struct _GstClapperGLSink GstClapperGLSink;
+typedef struct _GstClapperGLSinkClass GstClapperGLSinkClass;
+
+GType gst_clapper_gl_sink_get_type (void);
+
+/**
+ * GstClapperGLSink:
+ *
+ * Opaque #GstClapperGLSink object
+ */
+struct _GstClapperGLSink
+{
+  /* <private> */
+  GstVideoSink parent;
+
+  GstVideoInfo v_info;
+
+  GtkClapperGLWidget *widget;
+
+  gboolean had_eos;
+
+  /* properties */
+  gboolean force_aspect_ratio;
+  gint par_n, par_d;
+  gboolean keep_last_frame;
+
+  gboolean ignore_textures;
+
+  GtkWidget *window;
+  gulong widget_destroy_id;
+  gulong window_destroy_id;
+
+  GstGLDisplay *display;
+  GstGLContext *context;
+  GstGLContext *gtk_context;
+
+  GstGLUpload *upload;
+  GstBuffer *uploaded_buffer;
+
+  /* read/write with object lock */
+  gint display_width, display_height;
+};
+
+/**
+ * GstClapperGLSinkClass:
+ *
+ * The #GstClapperGLSinkClass struct only contains private data
+ */
+struct _GstClapperGLSinkClass
+{
+  GstVideoSinkClass object_class;
+
+  /* metadata */
+  const gchar *window_title;
+
+  /* virtuals */
+  GtkWidget* (*create_widget) (void);
+};
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC (GstClapperGLSink, gst_object_unref)
+
+G_END_DECLS
+
+#endif /* __GST_CLAPPER_GL_SINK_H__ */

lib/gst/clapper/gtk4/gstclapperglutils.c

@@ -0,0 +1,103 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2015 Thibault Saunier <tsaunier@gnome.org>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/* FIXME: remove these once their headers are public in gstreamer:
+ * https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/804
+ */
+
+#include "gstclapperglutils.h"
+
+static const gfloat identity_matrix[] = {
+  1.0, 0.0, 0.0, 0.0,
+  0.0, 1.0, 0.0, 0.0,
+  0.0, 0.0, 1.0, 0.0,
+  0.0, 0.0, 0.0, 1.0,
+};
+
+static const gfloat from_ndc_matrix[] = {
+  0.5, 0.0, 0.0, 0.0,
+  0.0, 0.5, 0.0, 0.0,
+  0.0, 0.0, 0.5, 0.0,
+  0.5, 0.5, 0.5, 1.0,
+};
+
+static const gfloat to_ndc_matrix[] = {
+  2.0, 0.0, 0.0, 0.0,
+  0.0, 2.0, 0.0, 0.0,
+  0.0, 0.0, 2.0, 0.0,
+  -1.0, -1.0, -1.0, 1.0,
+};
+
+/* multiplies two 4x4 matrices, @a X @b, and stores the result in @result
+ * https://en.wikipedia.org/wiki/Matrix_multiplication
+ */
+static void
+gst_gl_multiply_matrix4 (const gfloat * a, const gfloat * b, gfloat * result)
+{
+  int i, j, k;
+  gfloat tmp[16] = { 0.0f };
+
+  if (!a || !b || !result)
+    return;
+  for (i = 0; i < 4; i++) {     /* column */
+    for (j = 0; j < 4; j++) {   /* row */
+      for (k = 0; k < 4; k++) {
+        tmp[j + (i * 4)] += a[k + (i * 4)] * b[j + (k * 4)];
+      }
+    }
+  }
+
+  for (i = 0; i < 16; i++)
+    result[i] = tmp[i];
+}
+
+/*
+ * gst_clapper_gl_get_affine_transformation_meta_as_ndc:
+ * @meta: (nullable): a #GstVideoAffineTransformationMeta
+ * @matrix: (out): result of the 4x4 matrix
+ *
+ * Retrieves the stored 4x4 affine transformation matrix stored in @meta in
+ * NDC coordinates. if @meta is NULL, an identity matrix is returned.
+ *
+ * NDC is a left-handed coordinate system
+ * - x - [-1, 1] - +ve X moves right
+ * - y - [-1, 1] - +ve Y moves up
+ * - z - [-1, 1] - +ve Z moves into
+ */
+void
+gst_clapper_gl_get_affine_transformation_meta_as_ndc (GstVideoAffineTransformationMeta *
+    meta, gfloat * matrix)
+{
+  if (!meta) {
+    int i;
+
+    for (i = 0; i < 16; i++) {
+      matrix[i] = identity_matrix[i];
+    }
+  } else {
+    float tmp[16];
+
+    /* change of basis multiplications */
+    gst_gl_multiply_matrix4 (from_ndc_matrix, meta->matrix, tmp);
+    gst_gl_multiply_matrix4 (tmp, to_ndc_matrix, matrix);
+  }
+}

lib/gst/clapper/gtk4/gstclapperglutils.h

@@ -0,0 +1,29 @@
+/*
+ * GStreamer
+ * Copyright (C) 2016 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CLAPPER_GL_UTILS_H__
+#define __GST_CLAPPER_GL_UTILS_H__
+
+#include <gst/video/gstvideoaffinetransformationmeta.h>
+
+void gst_clapper_gl_get_affine_transformation_meta_as_ndc (GstVideoAffineTransformationMeta *meta, gfloat *matrix);
+
+#endif /* __GST_CLAPPER_GL_UTILS_H__ */

lib/gst/clapper/gtk4/gstgtkutils.c

@@ -0,0 +1,95 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2015 Thibault Saunier <tsaunier@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include <gst/gst.h>
+#include "gstgtkutils.h"
+
+struct invoke_context
+{
+  GThreadFunc func;
+  gpointer data;
+  GMutex lock;
+  GCond cond;
+  gboolean fired;
+
+  gpointer res;
+};
+
+static gboolean
+gst_gtk_invoke_func (struct invoke_context *info)
+{
+  g_mutex_lock (&info->lock);
+  info->res = info->func (info->data);
+  info->fired = TRUE;
+  g_cond_signal (&info->cond);
+  g_mutex_unlock (&info->lock);
+
+  return G_SOURCE_REMOVE;
+}
+
+gpointer
+gst_gtk_invoke_on_main (GThreadFunc func, gpointer data)
+{
+  GMainContext *main_context = g_main_context_default ();
+  struct invoke_context info;
+
+  g_mutex_init (&info.lock);
+  g_cond_init (&info.cond);
+  info.fired = FALSE;
+  info.func = func;
+  info.data = data;
+
+  g_main_context_invoke (main_context, (GSourceFunc) gst_gtk_invoke_func,
+      &info);
+
+  g_mutex_lock (&info.lock);
+  while (!info.fired)
+    g_cond_wait (&info.cond, &info.lock);
+  g_mutex_unlock (&info.lock);
+
+  g_mutex_clear (&info.lock);
+  g_cond_clear (&info.cond);
+
+  return info.res;
+}
+
+void
+gst_gtk_install_shared_properties (GObjectClass *gobject_class)
+{
+  g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
+      g_param_spec_boolean ("force-aspect-ratio",
+          "Force aspect ratio",
+          "When enabled, scaling will respect original aspect ratio",
+          DEFAULT_FORCE_ASPECT_RATIO,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
+      gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio",
+          "The pixel aspect ratio of the device", DEFAULT_PAR_N, DEFAULT_PAR_D,
+          G_MAXINT, 1, 1, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (gobject_class, PROP_KEEP_LAST_FRAME,
+      g_param_spec_boolean ("keep-last-frame",
+          "Keep last frame",
+          "Keep showing last video frame after playback instead of black screen",
+          DEFAULT_KEEP_LAST_FRAME,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+}

lib/gst/clapper/gtk4/gstgtkutils.h

@@ -0,0 +1,46 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2015 Thibault Saunier <tsaunier@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_GTK_UTILS_H__
+#define __GST_GTK_UTILS_H__
+
+#define DEFAULT_FORCE_ASPECT_RATIO  TRUE
+#define DEFAULT_PAR_N               0
+#define DEFAULT_PAR_D               1
+#define DEFAULT_KEEP_LAST_FRAME     FALSE
+
+#include <glib.h>
+#include <glib-object.h>
+
+enum
+{
+  PROP_0,
+  PROP_WIDGET,
+  PROP_FORCE_ASPECT_RATIO,
+  PROP_PIXEL_ASPECT_RATIO,
+  PROP_KEEP_LAST_FRAME
+};
+
+gpointer gst_gtk_invoke_on_main (GThreadFunc func, gpointer data);
+
+void gst_gtk_install_shared_properties (GObjectClass *gobject_class);
+
+#endif /* __GST_GTK_UTILS_H__ */

lib/gst/clapper/gtk4/gtkclapperglwidget.h

@@ -0,0 +1,113 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2020 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GTK_CLAPPER_GL_WIDGET_H__
+#define __GTK_CLAPPER_GL_WIDGET_H__
+
+#include <gtk/gtk.h>
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <gst/gl/gl.h>
+
+G_BEGIN_DECLS
+
+GType gtk_clapper_gl_widget_get_type (void);
+#define GTK_TYPE_CLAPPER_GL_WIDGET            (gtk_clapper_gl_widget_get_type())
+#define GTK_CLAPPER_GL_WIDGET(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GTK_TYPE_CLAPPER_GL_WIDGET,GtkClapperGLWidget))
+#define GTK_CLAPPER_GL_WIDGET_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GTK_TYPE_CLAPPER_GL_WIDGET,GtkClapperGLWidgetClass))
+#define GTK_IS_CLAPPER_GL_WIDGET(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GTK_TYPE_CLAPPER_GL_WIDGET))
+#define GTK_IS_CLAPPER_GL_WIDGET_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GTK_TYPE_CLAPPER_GL_WIDGET))
+#define GTK_CLAPPER_GL_WIDGET_CAST(obj)       ((GtkClapperGLWidget*)(obj))
+#define GTK_CLAPPER_GL_WIDGET_LOCK(w)         g_mutex_lock(&((GtkClapperGLWidget*)(w))->lock)
+#define GTK_CLAPPER_GL_WIDGET_UNLOCK(w)       g_mutex_unlock(&((GtkClapperGLWidget*)(w))->lock)
+
+typedef struct _GtkClapperGLWidget GtkClapperGLWidget;
+typedef struct _GtkClapperGLWidgetClass GtkClapperGLWidgetClass;
+typedef struct _GtkClapperGLWidgetPrivate GtkClapperGLWidgetPrivate;
+
+struct _GtkClapperGLWidget
+{
+  /* <private> */
+  GtkGLArea parent;
+  GtkClapperGLWidgetPrivate *priv;
+
+  /* properties */
+  gboolean force_aspect_ratio;
+  gint par_n, par_d;
+  gboolean keep_last_frame;
+
+  gint display_width;
+  gint display_height;
+
+  /* Widget dimensions */
+  gint scaled_width;
+  gint scaled_height;
+
+  /* Position coords */
+  gdouble last_pos_x;
+  gdouble last_pos_y;
+
+  gboolean negotiated;
+  gboolean ignore_buffers;
+  GstBuffer *pending_buffer;
+  GstBuffer *buffer;
+  GstVideoInfo v_info;
+
+  /* resize */
+  gboolean pending_resize;
+  GstVideoInfo pending_v_info;
+  guint display_ratio_num;
+  guint display_ratio_den;
+
+  /*< private >*/
+  GMutex lock;
+  GWeakRef element;
+
+  /* event controllers */
+  GtkEventController *key_controller;
+  GtkEventController *motion_controller;
+  GtkGesture *click_gesture;
+
+  /* Pending draw idles callback */
+  guint draw_id;
+};
+
+struct _GtkClapperGLWidgetClass
+{
+  GtkGLAreaClass parent_class;
+};
+
+/* API */
+gboolean        gtk_clapper_gl_widget_set_format           (GtkClapperGLWidget * widget, GstVideoInfo * v_info);
+void            gtk_clapper_gl_widget_set_buffer           (GtkClapperGLWidget * widget, GstBuffer * buffer);
+void            gtk_clapper_gl_widget_set_element          (GtkClapperGLWidget * widget, GstElement * element);
+
+GtkWidget *     gtk_clapper_gl_widget_new                  (void);
+
+gboolean        gtk_clapper_gl_widget_init_winsys          (GtkClapperGLWidget * widget);
+GstGLDisplay *  gtk_clapper_gl_widget_get_display          (GtkClapperGLWidget * widget);
+GstGLContext *  gtk_clapper_gl_widget_get_context          (GtkClapperGLWidget * widget);
+GstGLContext *  gtk_clapper_gl_widget_get_gtk_context      (GtkClapperGLWidget * widget);
+gboolean        gtk_clapper_gl_widget_update_output_format (GtkClapperGLWidget * widget, GstCaps * caps);
+
+G_END_DECLS
+
+#endif /* __GTK_CLAPPER_GL_WIDGET_H__ */

lib/gst/clapper/meson.build

@@ -0,0 +1,83 @@
+gstclapper_sources = [
+  'gstclapper.c',
+  'gstclapper-signal-dispatcher.c',
+  'gstclapper-video-renderer.c',
+  'gstclapper-media-info.c',
+  'gstclapper-g-main-context-signal-dispatcher.c',
+  'gstclapper-video-overlay-video-renderer.c',
+  'gstclapper-visualization.c',
+  'gstclapper-mpris.c',
+  'gstclapper-gtk4-plugin.c',
+
+  'gtk4/gstclapperglsink.c',
+  'gtk4/gstgtkutils.c',
+  'gtk4/gtkclapperglwidget.c',
+  'gtk4/gstclapperglutils.c',
+]
+gstclapper_headers = [
+  'clapper.h',
+  'clapper-prelude.h',
+  'gstclapper.h',
+  'gstclapper-types.h',
+  'gstclapper-signal-dispatcher.h',
+  'gstclapper-video-renderer.h',
+  'gstclapper-media-info.h',
+  'gstclapper-g-main-context-signal-dispatcher.h',
+  'gstclapper-video-overlay-video-renderer.h',
+  'gstclapper-visualization.h',
+  'gstclapper-mpris.h',
+  'gstclapper-gtk4-plugin.h',
+]
+gstclapper_defines = [
+  '-DHAVE_CONFIG_H',
+  '-DBUILDING_GST_CLAPPER',
+  '-DGST_USE_UNSTABLE_API',
+  '-DHAVE_GTK_GL',
+]
+
+if not get_option('lib')
+  subdir_done()
+endif
+
+if not gir.found()
+  error('Clapper lib requires GI bindings to be compiled')
+endif
+
+if not have_gtk_gl_windowing
+  error('GTK4 widget requires GL windowing')
+endif
+
+gstclapper_mpris_gdbus = gnome.gdbus_codegen('gstclapper-mpris-gdbus',
+  sources: '../../../data/gstclapper-mpris-gdbus.xml',
+  interface_prefix: 'org.mpris.',
+  namespace: 'GstClapperMpris'
+)
+
+gstclapper = library('gstclapper-' + api_version,
+  gstclapper_sources + gstclapper_mpris_gdbus,
+  c_args: gstclapper_defines,
+  link_args: noseh_link_args,
+  include_directories: [configinc, libsinc],
+  version: libversion,
+  install: true,
+  install_dir: pkglibdir,
+  dependencies: [gtk4_dep, glib_dep, gio_dep, giounix_dep,
+    gstbase_dep, gstvideo_dep, gstaudio_dep,
+    gsttag_dep, gstpbutils_dep, libm] + gtk_deps,
+)
+
+clapper_gir = gnome.generate_gir(gstclapper,
+  sources: gstclapper_sources + gstclapper_headers,
+  namespace: 'GstClapper',
+  nsversion: api_version,
+  identifier_prefix: 'Gst',
+  symbol_prefix: 'gst',
+  export_packages: 'gstreamer-clapper-1.0',
+  includes: ['Gst-1.0', 'GstPbutils-1.0', 'GstBase-1.0', 'GstVideo-1.0',
+    'GstAudio-1.0', 'GstTag-1.0'],
+  install: true,
+  install_dir_typelib: join_paths(pkglibdir, 'girepository-1.0'),
+  extra_args: gir_init_section + ['-DGST_USE_UNSTABLE_API'],
+  dependencies: [gstbase_dep, gstvideo_dep, gstaudio_dep,
+    gsttag_dep, gstpbutils_dep]
+)

lib/gst/meson.build

@@ -0,0 +1,2 @@
+subdir('clapper')
+subdir('plugin')

lib/gst/plugin/gstclappersink.c

@@ -0,0 +1,681 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2020-2022 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclappersink.h"
+#include "gstgtkutils.h"
+
+#define DEFAULT_FORCE_ASPECT_RATIO  TRUE
+#define DEFAULT_PAR_N               0
+#define DEFAULT_PAR_D               1
+
+#define SINK_FORMATS \
+  "{ BGR, RGB, BGRA, RGBA, ABGR, ARGB, RGBx, BGRx, RGBA64_LE, RGBA64_BE, NV12 }"
+
+#define GST_CLAPPER_GL_SINK_CAPS \
+    "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "              \
+    "format = (string)" SINK_FORMATS ", "                               \
+    "width = " GST_VIDEO_SIZE_RANGE ", "                                \
+    "height = " GST_VIDEO_SIZE_RANGE ", "                               \
+    "framerate = " GST_VIDEO_FPS_RANGE ", "                             \
+    "texture-target = (string) { 2D, external-oes } "                   \
+    " ; "                                                               \
+    "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY ","                \
+    GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION "), "           \
+    "format = (string)" SINK_FORMATS ", "                               \
+    "width = " GST_VIDEO_SIZE_RANGE ", "                                \
+    "height = " GST_VIDEO_SIZE_RANGE ", "                               \
+    "framerate = " GST_VIDEO_FPS_RANGE ", "                             \
+    "texture-target = (string) { 2D, external-oes } "
+
+enum
+{
+  PROP_0,
+  PROP_WIDGET,
+  PROP_FORCE_ASPECT_RATIO,
+  PROP_PIXEL_ASPECT_RATIO,
+  PROP_LAST
+};
+
+GST_DEBUG_CATEGORY (gst_debug_clapper_sink);
+#define GST_CAT_DEFAULT gst_debug_clapper_sink
+
+static GstStaticPadTemplate gst_clapper_sink_template =
+    GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (
+        GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:DMABuf", SINK_FORMATS) ";"
+        GST_CLAPPER_GL_SINK_CAPS ";"
+        GST_VIDEO_CAPS_MAKE (SINK_FORMATS)));
+
+static void gst_clapper_sink_navigation_interface_init (
+    GstNavigationInterface *iface);
+
+#define gst_clapper_sink_parent_class parent_class
+G_DEFINE_TYPE_WITH_CODE (GstClapperSink, gst_clapper_sink,
+    GST_TYPE_VIDEO_SINK,
+    G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
+        gst_clapper_sink_navigation_interface_init);
+    GST_DEBUG_CATEGORY_INIT (gst_debug_clapper_sink,
+        "clappersink", 0, "Clapper Sink"));
+GST_ELEMENT_REGISTER_DEFINE (clappersink, "clappersink", GST_RANK_NONE,
+    GST_TYPE_CLAPPER_SINK);
+
+static void gst_clapper_sink_finalize (GObject *object);
+static void gst_clapper_sink_set_property (GObject *object, guint prop_id,
+    const GValue *value, GParamSpec *param_spec);
+static void gst_clapper_sink_get_property (GObject *object, guint prop_id,
+    GValue *value, GParamSpec *param_spec);
+
+static gboolean gst_clapper_sink_propose_allocation (GstBaseSink *bsink,
+    GstQuery *query);
+static gboolean gst_clapper_sink_start (GstBaseSink *bsink);
+static gboolean gst_clapper_sink_stop (GstBaseSink *bsink);
+
+static GstStateChangeReturn
+gst_clapper_sink_change_state (GstElement *element, GstStateChange transition);
+
+static void gst_clapper_sink_get_times (GstBaseSink *bsink, GstBuffer *buffer,
+    GstClockTime *start, GstClockTime *end);
+static GstCaps * gst_clapper_sink_get_caps (GstBaseSink *bsink,
+    GstCaps *filter);
+static gboolean gst_clapper_sink_set_caps (GstBaseSink *bsink,
+    GstCaps *caps);
+static GstFlowReturn gst_clapper_sink_show_frame (GstVideoSink *bsink,
+    GstBuffer *buffer);
+
+static void
+gst_clapper_sink_class_init (GstClapperSinkClass *klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseSinkClass *gstbasesink_class;
+  GstVideoSinkClass *gstvideosink_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasesink_class = (GstBaseSinkClass *) klass;
+  gstvideosink_class = (GstVideoSinkClass *) klass;
+
+  gobject_class->set_property = gst_clapper_sink_set_property;
+  gobject_class->get_property = gst_clapper_sink_get_property;
+  gobject_class->finalize = gst_clapper_sink_finalize;
+
+  //gst_gtk_install_shared_properties (gobject_class);
+
+  gstelement_class->change_state = gst_clapper_sink_change_state;
+
+  gstbasesink_class->get_caps = gst_clapper_sink_get_caps;
+  gstbasesink_class->set_caps = gst_clapper_sink_set_caps;
+  gstbasesink_class->get_times = gst_clapper_sink_get_times;
+  gstbasesink_class->propose_allocation = gst_clapper_sink_propose_allocation;
+  gstbasesink_class->start = gst_clapper_sink_start;
+  gstbasesink_class->stop = gst_clapper_sink_stop;
+
+  gstvideosink_class->show_frame = gst_clapper_sink_show_frame;
+
+  gst_element_class_set_metadata (gstelement_class,
+      "Clapper Video Sink",
+      "Sink/Video", "A GTK4 video sink used by Clapper media player",
+      "Rafał Dzięgiel <rafostar.github@gmail.com>");
+
+  gst_element_class_add_static_pad_template (gstelement_class,
+      &gst_clapper_sink_template);
+}
+
+static void
+gst_clapper_sink_init (GstClapperSink *self)
+{
+  GObjectClass *gobject_class;
+
+  gobject_class = (GObjectClass *) GST_CLAPPER_SINK_GET_CLASS (self);
+
+  /* HACK: install here instead of class init to avoid GStreamer
+   * plugin scanner GObject type conflicts with older GTK versions */
+  if (!g_object_class_find_property (gobject_class, "widget")) {
+    g_object_class_install_property (gobject_class, PROP_WIDGET,
+        g_param_spec_object ("widget", "GTK Widget",
+            "The GtkWidget to place in the widget hierarchy "
+            "(must only be get from the GTK main thread)",
+            GTK_TYPE_WIDGET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+  }
+
+  self->force_aspect_ratio = DEFAULT_FORCE_ASPECT_RATIO;
+  self->par_n = DEFAULT_PAR_N;
+  self->par_d = DEFAULT_PAR_D;
+}
+
+static void
+gst_clapper_sink_finalize (GObject *object)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK (object);
+
+  GST_TRACE ("Finalize");
+  GST_OBJECT_LOCK (self);
+
+  if (self->window && self->window_destroy_id)
+    g_signal_handler_disconnect (self->window, self->window_destroy_id);
+  //if (self->widget && self->widget_destroy_id)
+  //  g_signal_handler_disconnect (self->widget, self->widget_destroy_id);
+
+  g_clear_object (&self->obj);
+  GST_OBJECT_UNLOCK (self);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+widget_destroy_cb (GtkWidget *widget, GstClapperSink *self)
+{
+  GST_OBJECT_LOCK (self);
+  g_clear_object (&self->obj);
+  GST_OBJECT_UNLOCK (self);
+}
+
+static void
+window_destroy_cb (GtkWidget *window, GstClapperSink *self)
+{
+  GST_OBJECT_LOCK (self);
+
+  if (self->obj) {
+    if (self->widget_destroy_id) {
+      GtkWidget *widget;
+
+      widget = gtk_clapper_object_get_widget (self->obj);
+
+      g_signal_handler_disconnect (widget, self->widget_destroy_id);
+      self->widget_destroy_id = 0;
+    }
+    g_clear_object (&self->obj);
+  }
+  self->window = NULL;
+
+  GST_OBJECT_UNLOCK (self);
+}
+
+static GtkWidget *
+gst_clapper_sink_get_widget (GstClapperSink *self)
+{
+  if (G_UNLIKELY (self->obj == NULL)) {
+    /* Ensure GTK is initialized */
+    if (!gtk_init_check ()) {
+      GST_ERROR_OBJECT (self, "Could not ensure GTK initialization");
+      return NULL;
+    }
+
+    self->obj = gtk_clapper_object_new ();
+
+  /* Take the floating ref, otherwise the destruction of the container will
+   * make this widget disappear possibly before we are done. */
+  //g_object_ref_sink (self->obj);
+
+  //self->widget_destroy_id = g_signal_connect (widget,
+  //    "destroy", G_CALLBACK (widget_destroy_cb), self);
+
+    /* Back pointer */
+    gtk_clapper_object_set_element (
+        GTK_CLAPPER_OBJECT (self->obj), GST_ELEMENT (self));
+  }
+
+  return gtk_clapper_object_get_widget (self->obj);
+}
+
+static void
+gst_clapper_sink_get_property (GObject *object, guint prop_id,
+    GValue *value, GParamSpec *pspec)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK (object);
+
+  switch (prop_id) {
+    case PROP_WIDGET:{
+      GObject *widget = NULL;
+
+      GST_OBJECT_LOCK (self);
+      if (G_LIKELY (self->obj != NULL))
+        widget = G_OBJECT (gtk_clapper_object_get_widget (self->obj));
+      GST_OBJECT_UNLOCK (self);
+
+      if (G_UNLIKELY (widget == NULL)) {
+        widget = gst_gtk_invoke_on_main (
+            (GThreadFunc) gst_clapper_sink_get_widget, self);
+      }
+
+      g_value_set_object (value, widget);
+      break;
+    }
+    case PROP_FORCE_ASPECT_RATIO:
+      g_value_set_boolean (value, self->force_aspect_ratio);
+      break;
+    case PROP_PIXEL_ASPECT_RATIO:
+      gst_value_set_fraction (value, self->par_n, self->par_d);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_sink_set_property (GObject *object, guint prop_id,
+    const GValue *value, GParamSpec *pspec)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK (object);
+
+  switch (prop_id) {
+    case PROP_FORCE_ASPECT_RATIO:
+      self->force_aspect_ratio = g_value_get_boolean (value);
+      break;
+    case PROP_PIXEL_ASPECT_RATIO:
+      self->par_n = gst_value_get_fraction_numerator (value);
+      self->par_d = gst_value_get_fraction_denominator (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_sink_navigation_send_event (GstNavigation *navigation,
+    GstStructure *structure)
+{
+  GstClapperSink *sink = GST_CLAPPER_SINK_CAST (navigation);
+  GstEvent *event;
+
+  GST_TRACE_OBJECT (sink, "Navigation event: %" GST_PTR_FORMAT, structure);
+  event = gst_event_new_navigation (structure);
+
+  if (G_LIKELY (GST_IS_EVENT (event))) {
+    GstPad *pad;
+
+    pad = gst_pad_get_peer (GST_VIDEO_SINK_PAD (sink));
+
+    if (G_LIKELY (GST_IS_PAD (pad))) {
+      if (!gst_pad_send_event (pad, gst_event_ref (event))) {
+        /* If upstream didn't handle the event we'll post a message with it
+         * for the application in case it wants to do something with it */
+        gst_element_post_message (GST_ELEMENT_CAST (sink),
+            gst_navigation_message_new_event (GST_OBJECT_CAST (sink), event));
+      }
+      gst_object_unref (pad);
+    }
+    gst_event_unref (event);
+  }
+}
+
+static void
+gst_clapper_sink_navigation_interface_init (GstNavigationInterface *iface)
+{
+  iface->send_event = gst_clapper_sink_navigation_send_event;
+}
+
+static gboolean
+gst_clapper_sink_propose_allocation (GstBaseSink *bsink, GstQuery *query)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK (bsink);
+  GstBufferPool *pool = NULL;
+  GstStructure *config;
+  GstCaps *caps;
+  GstVideoInfo info;
+  guint size;
+  gboolean need_pool;
+  GstStructure *allocation_meta = NULL;
+  gint display_width, display_height;
+
+  //if (!self->display || !self->context)
+  //  return FALSE;
+
+  gst_query_parse_allocation (query, &caps, &need_pool);
+
+  if (!caps)
+    goto no_caps;
+
+  if (!gst_video_info_from_caps (&info, caps))
+    goto invalid_caps;
+
+  /* Normal size of a frame */
+  size = GST_VIDEO_INFO_SIZE (&info);
+
+  if (need_pool) {
+    GST_DEBUG_OBJECT (self, "Creating new pool");
+
+    pool = gst_buffer_pool_new ();
+    config = gst_buffer_pool_get_config (pool);
+
+    gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
+
+    if (!gst_buffer_pool_set_config (pool, config)) {
+      gst_object_unref (pool);
+      goto config_failed;
+    }
+  }
+
+  /* We need at least 3 buffers because we keep around the current one
+   * for memory to stay valid during resizing and hold on to the pending one */
+  gst_query_add_allocation_pool (query, pool, size, 3, 0);
+  if (pool)
+    gst_object_unref (pool);
+
+  /* FIXME: Read calculated display sizes from widget */
+  display_width = GST_VIDEO_INFO_WIDTH (&info);
+  display_height = GST_VIDEO_INFO_HEIGHT (&info);
+
+  if (display_width != 0 && display_height != 0) {
+    GST_DEBUG_OBJECT (self, "Sending alloc query with size %dx%d",
+        display_width, display_height);
+    allocation_meta = gst_structure_new ("GstVideoOverlayCompositionMeta",
+        "width", G_TYPE_UINT, display_width,
+        "height", G_TYPE_UINT, display_height, NULL);
+  }
+
+  gst_query_add_allocation_meta (query,
+      GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, allocation_meta);
+
+  if (allocation_meta)
+    gst_structure_free (allocation_meta);
+
+  /* We also support various metadata */
+  gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
+
+  return TRUE;
+
+  /* ERRORS */
+no_caps:
+  GST_DEBUG_OBJECT (bsink, "No caps specified");
+  return FALSE;
+
+invalid_caps:
+  GST_DEBUG_OBJECT (bsink, "Invalid caps specified");
+  return FALSE;
+
+config_failed:
+  GST_DEBUG_OBJECT (bsink, "Failed to set config");
+  return FALSE;
+}
+
+static gboolean
+gst_clapper_sink_start_on_main (GstClapperSink *self)
+{
+  GtkWidget *widget;
+
+  /* Make sure widget is created */
+  if (!(widget = gst_clapper_sink_get_widget (self)))
+    return FALSE;
+
+  /* After this point, self->obj will always be set */
+
+  if (!GTK_IS_ROOT (gtk_widget_get_root (widget))) {
+    GtkWidget *toplevel, *parent;
+    gchar *win_title;
+
+    if ((parent = gtk_widget_get_parent (widget))) {
+      GtkWidget *temp_parent;
+
+      while ((temp_parent = gtk_widget_get_parent (parent)))
+        parent = temp_parent;
+    }
+    toplevel = (parent) ? parent : widget;
+
+    /* User did not add widget its own UI, let's popup a new GtkWindow to
+     * make "gst-launch-1.0" work. */
+    self->window = (GtkWindow *) gtk_window_new ();
+
+    win_title = g_strdup_printf ("Clapper Sink - GTK %u.%u.%u Window",
+        gtk_get_major_version (),
+        gtk_get_minor_version (),
+        gtk_get_micro_version ());
+
+    gtk_window_set_default_size (self->window, 640, 480);
+    gtk_window_set_title (self->window, win_title);
+    gtk_window_set_child (self->window, toplevel);
+
+    g_free (win_title);
+
+    self->window_destroy_id = g_signal_connect (self->window,
+        "destroy", G_CALLBACK (window_destroy_cb), self);
+  }
+
+  return TRUE;
+}
+
+static gboolean
+gst_clapper_sink_start (GstBaseSink *bsink)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK (bsink);
+  GtkClapperObject *obj = NULL;
+
+  if (!(! !gst_gtk_invoke_on_main ((GThreadFunc) (GCallback)
+      gst_clapper_sink_start_on_main, self)))
+    return FALSE;
+
+  //widget = GTK_CLAPPER_WIDGET (self->widget);
+
+  GST_OBJECT_LOCK (self);
+  if (self->obj)
+    obj = g_object_ref (self->obj);
+  GST_OBJECT_UNLOCK (self);
+
+  if (G_UNLIKELY (obj == NULL)) {
+    GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
+        "Clapper widget does not exist"), (NULL));
+    return FALSE;
+  }
+
+  if (!gtk_clapper_object_init_winsys (obj)) {
+    GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
+        "Failed to initialize OpenGL with GTK"), (NULL));
+    return FALSE;
+  }
+/*
+  if (!clapper_sink->display)
+    clapper_sink->display = gtk_clapper_gl_widget_get_display (clapper_widget);
+  if (!clapper_sink->context)
+    clapper_sink->context = gtk_clapper_gl_widget_get_context (clapper_widget);
+  if (!clapper_sink->gtk_context)
+    clapper_sink->gtk_context = gtk_clapper_gl_widget_get_gtk_context (clapper_widget);
+
+  if (!clapper_sink->display || !clapper_sink->context || !clapper_sink->gtk_context) {
+    GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
+            "Failed to retrieve OpenGL context from GTK"), (NULL));
+    return FALSE;
+  }
+
+  gst_gl_element_propagate_display_context (GST_ELEMENT (bsink),
+      clapper_sink->display);
+*/
+
+  return TRUE;
+}
+
+static gboolean
+gst_clapper_sink_stop_on_main (GstClapperSink *self)
+{
+  if (self->window) {
+    gtk_window_destroy (self->window);
+    self->window = NULL;
+    //self->widget = NULL;
+  }
+
+  return TRUE;
+}
+
+static gboolean
+gst_clapper_sink_stop (GstBaseSink *bsink)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK_CAST (bsink);
+
+  if (G_UNLIKELY (self->window != NULL)) {
+    return ! !gst_gtk_invoke_on_main ((GThreadFunc) (GCallback)
+        gst_clapper_sink_stop_on_main, self);
+  }
+
+  return TRUE;
+}
+
+static void
+gst_gtk_window_show_all_and_unref (GtkWindow *window)
+{
+  gtk_window_present (window);
+  g_object_unref (window);
+}
+
+static GstStateChangeReturn
+gst_clapper_sink_change_state (GstElement *element, GstStateChange transition)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK_CAST (element);
+  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+
+  GST_DEBUG_OBJECT (self, "Changing state: %s => %s",
+      gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
+      gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+  if (G_UNLIKELY (ret == GST_STATE_CHANGE_FAILURE))
+    return ret;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_READY_TO_PAUSED:{
+      GtkWindow *window = NULL;
+
+      GST_OBJECT_LOCK (self);
+      if (self->window)
+        window = g_object_ref (self->window);
+      GST_OBJECT_UNLOCK (self);
+
+      if (window) {
+        gst_gtk_invoke_on_main ((GThreadFunc) (GCallback)
+            gst_gtk_window_show_all_and_unref, window);
+      }
+      break;
+    }
+    case GST_STATE_CHANGE_PAUSED_TO_READY:
+      GST_OBJECT_LOCK (self);
+      if (G_LIKELY (self->obj != NULL))
+        gtk_clapper_object_set_buffer (self->obj, NULL);
+      GST_OBJECT_UNLOCK (self);
+      break;
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+static void
+gst_clapper_sink_get_times (GstBaseSink *bsink, GstBuffer *buffer,
+    GstClockTime *start, GstClockTime *end)
+{
+  if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
+    *start = GST_BUFFER_TIMESTAMP (buffer);
+
+    if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
+      *end = *start + GST_BUFFER_DURATION (buffer);
+    } else {
+      GstClapperSink *self = GST_CLAPPER_SINK_CAST (bsink);
+
+      if (GST_VIDEO_INFO_FPS_N (&self->v_info) > 0) {
+        *end = *start + gst_util_uint64_scale_int (GST_SECOND,
+            GST_VIDEO_INFO_FPS_D (&self->v_info),
+            GST_VIDEO_INFO_FPS_N (&self->v_info));
+      }
+    }
+  }
+}
+
+static GstCaps *
+gst_clapper_sink_get_caps (GstBaseSink *bsink, GstCaps *filter)
+{
+  GstCaps *tmp = NULL;
+  GstCaps *result = NULL;
+
+  tmp = gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (bsink));
+
+  if (filter) {
+    GST_DEBUG_OBJECT (bsink, "Intersecting with filter caps %" GST_PTR_FORMAT,
+        filter);
+
+    result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
+    gst_caps_unref (tmp);
+  } else {
+    result = tmp;
+  }
+
+  //result = gst_gl_overlay_compositor_add_caps (result);
+
+  GST_DEBUG_OBJECT (bsink, "Returning caps: %" GST_PTR_FORMAT, result);
+
+  return result;
+}
+
+static gboolean
+gst_clapper_sink_set_caps (GstBaseSink *bsink, GstCaps *caps)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK_CAST (bsink);
+
+  GST_DEBUG ("Set caps: %" GST_PTR_FORMAT, caps);
+  GST_OBJECT_LOCK (self);
+
+  if (!gst_video_info_from_caps (&self->v_info, caps)) {
+    GST_OBJECT_UNLOCK (self);
+    return FALSE;
+  }
+
+  if (G_UNLIKELY (self->obj == NULL)) {
+    GST_OBJECT_UNLOCK (self);
+    GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
+        ("%s", "Output widget was destroyed"), (NULL));
+    return FALSE;
+  }
+
+  if (!gtk_clapper_object_set_format (self->obj, &self->v_info)) {
+    GST_OBJECT_UNLOCK (self);
+    return FALSE;
+  }
+
+  GST_OBJECT_UNLOCK (self);
+
+  return TRUE;
+}
+
+static GstFlowReturn
+gst_clapper_sink_show_frame (GstVideoSink *vsink, GstBuffer *buffer)
+{
+  GstClapperSink *self = GST_CLAPPER_SINK_CAST (vsink);
+
+  GST_TRACE ("Rendering buffer: %p", buffer);
+  GST_OBJECT_LOCK (self);
+
+  if (G_UNLIKELY (self->obj == NULL)) {
+    GST_OBJECT_UNLOCK (self);
+    GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
+        ("%s", "Output widget was destroyed"), (NULL));
+    return GST_FLOW_ERROR;
+  }
+
+  gtk_clapper_object_set_buffer (self->obj, buffer);
+  GST_OBJECT_UNLOCK (self);
+
+  return GST_FLOW_OK;
+}

lib/gst/plugin/gstclappersink.h

@@ -0,0 +1,74 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2020-2022 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+#include <gst/gst.h>
+#include <gst/video/gstvideosink.h>
+#include <gst/video/video.h>
+
+#include "gtkclapperobject.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CLAPPER_SINK            (gst_clapper_sink_get_type ())
+#define GST_IS_CLAPPER_SINK(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_CLAPPER_SINK))
+#define GST_IS_CLAPPER_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_CLAPPER_SINK))
+#define GST_CLAPPER_SINK_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CLAPPER_SINK, GstClapperSinkClass))
+#define GST_CLAPPER_SINK_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_CLAPPER_SINK, GstClapperSinkClass))
+#define GST_CLAPPER_SINK(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_CLAPPER_SINK, GstClapperSink))
+#define GST_CLAPPER_SINK_CAST(obj)       ((GstClapperSink*)(obj))
+
+typedef struct _GstClapperSink GstClapperSink;
+typedef struct _GstClapperSinkClass GstClapperSinkClass;
+
+#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
+G_DEFINE_AUTOPTR_CLEANUP_FUNC (GstClapperSink, gst_object_unref)
+#endif
+
+struct _GstClapperSink
+{
+  GstVideoSink parent;
+
+  GstVideoInfo v_info;
+
+  GtkClapperObject *obj;
+  GtkWindow *window;
+
+  /* properties */
+  gboolean force_aspect_ratio;
+  gint par_n, par_d;
+
+  gint display_width, display_height;
+  gulong widget_destroy_id, window_destroy_id;
+};
+
+struct _GstClapperSinkClass
+{
+  GstVideoSinkClass parent_class;
+};
+
+GST_ELEMENT_REGISTER_DECLARE (clappersink);
+
+GType gst_clapper_sink_get_type (void);
+
+G_END_DECLS

lib/gst/plugin/gstgtkutils.c

@@ -0,0 +1,71 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2015 Thibault Saunier <tsaunier@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "gstgtkutils.h"
+
+struct invoke_context
+{
+  GThreadFunc func;
+  gpointer data;
+  GMutex lock;
+  GCond cond;
+  gboolean fired;
+
+  gpointer res;
+};
+
+static gboolean
+gst_gtk_invoke_func (struct invoke_context *info)
+{
+  g_mutex_lock (&info->lock);
+  info->res = info->func (info->data);
+  info->fired = TRUE;
+  g_cond_signal (&info->cond);
+  g_mutex_unlock (&info->lock);
+
+  return G_SOURCE_REMOVE;
+}
+
+gpointer
+gst_gtk_invoke_on_main (GThreadFunc func, gpointer data)
+{
+  GMainContext *main_context = g_main_context_default ();
+  struct invoke_context info;
+
+  g_mutex_init (&info.lock);
+  g_cond_init (&info.cond);
+  info.fired = FALSE;
+  info.func = func;
+  info.data = data;
+
+  g_main_context_invoke (main_context, (GSourceFunc) gst_gtk_invoke_func,
+      &info);
+
+  g_mutex_lock (&info.lock);
+  while (!info.fired)
+    g_cond_wait (&info.cond, &info.lock);
+  g_mutex_unlock (&info.lock);
+
+  g_mutex_clear (&info.lock);
+  g_cond_clear (&info.cond);
+
+  return info.res;
+}

lib/gst/plugin/gstgtkutils.h

@@ -2,7 +2,6 @@
  * GStreamer
  * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
  * Copyright (C) 2015 Thibault Saunier <tsaunier@gnome.org>
- * Copyright (C) 2022 Rafał Dzięgiel <rafostar.github@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -23,17 +22,5 @@
 #pragma once
 
 #include <glib.h>
-#include <gtk/gtk.h>
-#include <gst/video/video.h>
 
-G_BEGIN_DECLS
-
-gpointer        gst_gtk_invoke_on_main                (GThreadFunc func, gpointer data);
-
-GdkTexture *    gst_video_frame_into_gdk_texture      (GstVideoFrame *frame);
-
-void            gst_gtk_get_width_height_for_rotation (gint width, gint height,
-                                                       gint *out_width, gint *out_height,
-                                                       GstVideoOrientationMethod rotation);
-
-G_END_DECLS
+gpointer gst_gtk_invoke_on_main (GThreadFunc func, gpointer data);

lib/gst/plugin/gstplugin.c

@@ -21,21 +21,16 @@
 #include "config.h"
 #endif
 
-#include <gmodule.h>
-
 #include "gstclappersink.h"
 
 static gboolean
 plugin_init (GstPlugin *plugin)
 {
-  if (!g_module_supported ())
-    return FALSE;
+  gboolean res = FALSE;
 
-  gst_plugin_add_dependency_simple (plugin,
-      NULL, CLAPPER_SINK_IMPORTER_PATH, NULL,
-      GST_PLUGIN_DEPENDENCY_FLAG_NONE);
+  res |= GST_ELEMENT_REGISTER (clappersink, plugin);
 
-  return GST_ELEMENT_REGISTER (clappersink, plugin);
+  return res;
 }
 
 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,

lib/gst/plugin/gtkclapperobject.c

@@ -0,0 +1,960 @@
+/*
+ * GStreamer
+ * Copyright (C) 2022 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gl/gstglfuncs.h>
+#include <gst/allocators/gstdmabuf.h>
+
+#include "gtkclapperobject.h"
+#include "gstgtkutils.h"
+
+#if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
+#include <gdk/x11/gdkx.h>
+#if GST_GL_HAVE_PLATFORM_EGL
+#include <gst/gl/egl/gstgldisplay_egl.h>
+#endif
+#endif
+
+#if GST_GL_HAVE_WINDOW_WAYLAND && defined (GDK_WINDOWING_WAYLAND)
+#include <gdk/wayland/gdkwayland.h>
+#include <gst/gl/wayland/gstgldisplay_wayland.h>
+#endif
+
+#if GST_GL_HAVE_PLATFORM_EGL
+#include <gst/gl/egl/gsteglimage.h>
+#endif
+
+GST_DEBUG_CATEGORY (gst_debug_clapper_object);
+#define GST_CAT_DEFAULT gst_debug_clapper_object
+
+static void gtk_clapper_object_paintable_iface_init (GdkPaintableInterface *iface);
+static void gtk_clapper_object_finalize (GObject *object);
+
+static const GLfloat vertices[] = {
+  1.0f, 1.0f, 0.0f, 1.0f, 0.0f,
+  -1.0f, 1.0f, 0.0f, 0.0f, 0.0f,
+  -1.0f, -1.0f, 0.0f, 0.0f, 1.0f,
+  1.0f, -1.0f, 0.0f, 1.0f, 1.0f
+};
+static const GLushort indices[] = {
+  0, 1, 2, 0, 2, 3
+};
+
+/* GTK4 renders things upside down ¯\_(ツ)_/¯ */
+static const gfloat vertical_flip_matrix[] = {
+  1.0f, 0.0f, 0.0f, 0.0f,
+  0.0f, -1.0f, 0.0f, 0.0f,
+  0.0f, 0.0f, 1.0f, 0.0f,
+  0.0f, 0.0f, 0.0f, 1.0f,
+};
+
+#define gtk_clapper_object_parent_class parent_class
+G_DEFINE_TYPE_WITH_CODE (GtkClapperObject, gtk_clapper_object, G_TYPE_OBJECT,
+    G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
+        gtk_clapper_object_paintable_iface_init)
+    GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "gtkclapperobject", 0,
+        "GTK Clapper Object"));
+
+static void
+gtk_clapper_object_class_init (GtkClapperObjectClass *klass)
+{
+  GObjectClass *gobject_class = (GObjectClass *) klass;
+
+  gobject_class->finalize = gtk_clapper_object_finalize;
+}
+
+static void
+gtk_clapper_object_init (GtkClapperObject *self)
+{
+  self->last_pos_x = 0;
+  self->last_pos_y = 0;
+
+  self->picture = (GtkPicture *) gtk_picture_new ();
+
+  /* We cannot do textures of 0x0px size */
+  gtk_widget_set_size_request (GTK_WIDGET (self->picture), 1, 1);
+
+  /* Center instead of fill to not draw empty space into framebuffer */
+  gtk_widget_set_halign (GTK_WIDGET (self->picture), GTK_ALIGN_CENTER);
+  gtk_widget_set_valign (GTK_WIDGET (self->picture), GTK_ALIGN_CENTER);
+
+  gtk_picture_set_paintable (self->picture, GDK_PAINTABLE (self));
+
+  gst_video_info_init (&self->v_info);
+  gst_video_info_init (&self->pending_v_info);
+
+  g_weak_ref_init (&self->element, NULL);
+  g_mutex_init (&self->lock);
+
+  self->gst_tex_target = GST_GL_TEXTURE_TARGET_EXTERNAL_OES;
+  self->gl_tex_target = gst_gl_texture_target_to_gl (self->gst_tex_target);
+}
+
+static void
+gtk_clapper_object_finalize (GObject *object)
+{
+  GtkClapperObject *self = GTK_CLAPPER_OBJECT (object);
+
+  if (self->draw_id)
+    g_source_remove (self->draw_id);
+
+  gst_buffer_replace (&self->pending_buffer, NULL);
+  gst_buffer_replace (&self->buffer, NULL);
+
+  g_mutex_clear (&self->lock);
+  g_weak_ref_clear (&self->element);
+
+  GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
+}
+
+static void
+_gdk_gl_context_set_active (GtkClapperObject *self, gboolean activate)
+{
+  /* We wrap around a GDK context, so we need to make
+   * both GTK and GStreamer aware of its active state */
+  if (activate) {
+    gdk_gl_context_make_current (self->gdk_context);
+    gst_gl_context_activate (self->wrapped_context, TRUE);
+  } else {
+    gst_gl_context_activate (self->wrapped_context, FALSE);
+    gdk_gl_context_clear_current ();
+  }
+}
+
+static GdkMemoryFormat
+video_format_to_gdk_memory_format (GstVideoFormat format)
+{
+  switch (format) {
+    case GST_VIDEO_FORMAT_BGR:
+      return GDK_MEMORY_B8G8R8;
+    case GST_VIDEO_FORMAT_RGB:
+      return GDK_MEMORY_R8G8B8;
+    case GST_VIDEO_FORMAT_BGRA:
+      return GDK_MEMORY_B8G8R8A8;
+    case GST_VIDEO_FORMAT_RGBA:
+      return GDK_MEMORY_R8G8B8A8;
+    case GST_VIDEO_FORMAT_ABGR:
+      return GDK_MEMORY_A8B8G8R8;
+    case GST_VIDEO_FORMAT_ARGB:
+      return GDK_MEMORY_A8R8G8B8;
+    case GST_VIDEO_FORMAT_BGRx:
+      return GDK_MEMORY_B8G8R8A8_PREMULTIPLIED;
+    case GST_VIDEO_FORMAT_RGBx:
+      return GDK_MEMORY_R8G8B8A8_PREMULTIPLIED;
+    case GST_VIDEO_FORMAT_RGBA64_LE:
+    case GST_VIDEO_FORMAT_RGBA64_BE:
+      return GDK_MEMORY_R16G16B16A16_PREMULTIPLIED;
+    default:
+      g_assert_not_reached ();
+  }
+
+  /* Number not belonging to any format */
+  return GDK_MEMORY_N_FORMATS;
+}
+
+static void
+gtk_clapper_object_bind_buffer (GtkClapperObject *self)
+{
+  const GstGLFuncs *gl = self->wrapped_context->gl_vtable;
+
+  gl->BindBuffer (GL_ARRAY_BUFFER, self->vertex_buffer);
+
+  /* Load the vertex position */
+  gl->VertexAttribPointer (self->attr_position, 3, GL_FLOAT, GL_FALSE,
+      5 * sizeof (GLfloat), (void *) 0);
+
+  /* Load the texture coordinate */
+  gl->VertexAttribPointer (self->attr_texture, 2, GL_FLOAT, GL_FALSE,
+      5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat)));
+
+  gl->EnableVertexAttribArray (self->attr_position);
+  gl->EnableVertexAttribArray (self->attr_texture);
+}
+
+static void
+gtk_clapper_object_unbind_buffer (GtkClapperObject *self)
+{
+  const GstGLFuncs *gl = self->wrapped_context->gl_vtable;
+
+  gl->BindBuffer (GL_ARRAY_BUFFER, 0);
+  gl->DisableVertexAttribArray (self->attr_position);
+  gl->DisableVertexAttribArray (self->attr_texture);
+}
+
+static void
+gtk_clapper_object_init_redisplay (GtkClapperObject *self)
+{
+  GstGLSLStage *frag_stage, *vert_stage;
+  GError *error = NULL;
+  gchar *frag_str;
+  const GstGLFuncs *gl;
+
+  if (self->gst_tex_target != GST_GL_TEXTURE_TARGET_EXTERNAL_OES)
+    return;
+
+  if (!((vert_stage = gst_glsl_stage_new_with_string (self->wrapped_context,
+      GL_VERTEX_SHADER, GST_GLSL_VERSION_NONE,
+      GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
+      gst_gl_shader_string_vertex_mat4_vertex_transform)))) {
+    GST_ERROR ("Failed to retrieve vertex shader for texture target");
+    return;
+  }
+
+  frag_str = gst_gl_shader_string_fragment_external_oes_get_default (
+      self->wrapped_context, GST_GLSL_VERSION_NONE,
+      GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY);
+  frag_stage = gst_glsl_stage_new_with_string (self->wrapped_context,
+      GL_FRAGMENT_SHADER, GST_GLSL_VERSION_NONE,
+      GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY, frag_str);
+
+  g_free (frag_str);
+
+  if (!frag_stage) {
+    GST_ERROR ("Failed to retrieve fragment shader for texture target");
+    return;
+  }
+
+  if (!((self->shader = gst_gl_shader_new_link_with_stages (self->wrapped_context,
+      &error, vert_stage, frag_stage, NULL)))) {
+    GST_ERROR ("Failed to initialize shader: %s", error->message);
+
+    g_clear_error (&error);
+    gst_object_unref (vert_stage);
+    gst_object_unref (frag_stage);
+
+    return;
+  }
+
+  self->attr_position =
+      gst_gl_shader_get_attribute_location (self->shader, "a_position");
+  self->attr_texture =
+      gst_gl_shader_get_attribute_location (self->shader, "a_texcoord");
+
+  gl = self->wrapped_context->gl_vtable;
+
+  if (gl->GenVertexArrays) {
+    gl->GenVertexArrays (1, &self->vao);
+    gl->BindVertexArray (self->vao);
+  }
+
+  gl->GenBuffers (1, &self->vertex_buffer);
+  gl->BindBuffer (GL_ARRAY_BUFFER, self->vertex_buffer);
+  gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices, GL_STATIC_DRAW);
+
+  if (gl->GenVertexArrays) {
+    gtk_clapper_object_bind_buffer (self);
+    gl->BindVertexArray (0);
+  }
+
+  gl->BindBuffer (GL_ARRAY_BUFFER, 0);
+  self->initiated = TRUE;
+}
+
+static gboolean
+_dmabuf_into_texture (GtkClapperObject *self, gint *fds, gsize *offsets)
+{
+  GstEGLImage *image;
+  const GstGLFuncs *gl;
+
+  image = gst_egl_image_from_dmabuf_direct_target (self->wrapped_context,
+      fds, offsets, &self->v_info, self->gst_tex_target);
+
+  /* If HW colorspace conversion failed and there is only one
+   * plane, we can just make it into single EGLImage as is */
+  if (!image && GST_VIDEO_INFO_N_PLANES (&self->v_info) == 1)
+    image = gst_egl_image_from_dmabuf (self->wrapped_context,
+        fds[0], &self->v_info, 0, offsets[0]);
+
+  /* Still no image? Give up then */
+  if (!image)
+    return FALSE;
+
+  gl = self->wrapped_context->gl_vtable;
+
+  if (!self->texture_id)
+    gl->GenTextures (1, &self->texture_id);
+
+  gl->BindTexture (self->gl_tex_target, self->texture_id);
+
+  gl->TexParameteri (self->gl_tex_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  gl->TexParameteri (self->gl_tex_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+  gl->TexParameteri (self->gl_tex_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+  gl->TexParameteri (self->gl_tex_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+  gl->EGLImageTargetTexture2D (self->gl_tex_target, gst_egl_image_get_image (image));
+
+  gl->BindTexture (GL_TEXTURE_2D, 0);
+  gst_egl_image_unref (image);
+
+  return TRUE;
+}
+
+static gboolean
+_ext_texture_into_2d (GtkClapperObject *self, guint tex_width, guint tex_height)
+{
+  GLuint framebuffer, new_texture_id;
+  GLenum status;
+  const GstGLFuncs *gl;
+
+  if (!self->initiated)
+    gtk_clapper_object_init_redisplay (self);
+
+  gl = self->wrapped_context->gl_vtable;
+
+  gl->GenFramebuffers (1, &framebuffer);
+  gl->BindFramebuffer (GL_FRAMEBUFFER, framebuffer);
+
+  gl->GenTextures (1, &new_texture_id);
+  gl->BindTexture (GL_TEXTURE_2D, new_texture_id);
+
+  gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+  gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+  gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+  gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, tex_width, tex_height, 0,
+      GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+
+  gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+      GL_TEXTURE_2D, new_texture_id, 0);
+
+  status = gl->CheckFramebufferStatus (GL_FRAMEBUFFER);
+  if (G_UNLIKELY (status != GL_FRAMEBUFFER_COMPLETE)) {
+    GST_ERROR ("Invalid framebuffer status: %u", status);
+
+    gl->BindTexture (GL_TEXTURE_2D, 0);
+    gl->DeleteTextures (1, &new_texture_id);
+
+    gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
+    gl->DeleteFramebuffers (1, &framebuffer);
+
+    return FALSE;
+  }
+
+  gl->Viewport (0, 0, tex_width, tex_height);
+
+  gst_gl_shader_use (self->shader);
+
+  if (gl->BindVertexArray)
+    gl->BindVertexArray (self->vao);
+
+  gtk_clapper_object_bind_buffer (self);
+
+  gl->ActiveTexture (GL_TEXTURE0);
+  gl->BindTexture (self->gl_tex_target, self->texture_id);
+
+  gst_gl_shader_set_uniform_1i (self->shader, "tex", 0);
+  gst_gl_shader_set_uniform_matrix_4fv (self->shader,
+      "u_transformation", 1, FALSE, vertical_flip_matrix);
+
+  gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
+
+  if (gl->BindVertexArray)
+    gl->BindVertexArray (0);
+  else
+    gtk_clapper_object_unbind_buffer (self);
+
+  gl->BindTexture (self->gl_tex_target, 0);
+
+  /* Replace external OES texture with new 2D one */
+  gl->DeleteTextures (1, &self->texture_id);
+  self->texture_id = new_texture_id;
+
+  gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
+  gl->DeleteFramebuffers (1, &framebuffer);
+
+  return TRUE;
+}
+
+static GdkTexture *
+gtk_clapper_object_import_dmabuf (GtkClapperObject *self, gint *fds, gsize *offsets)
+{
+  GdkTexture *texture;
+  guint tex_width, tex_height;
+
+  _gdk_gl_context_set_active (self, TRUE);
+
+  if (!_dmabuf_into_texture (self, fds, offsets)) {
+    _gdk_gl_context_set_active (self, FALSE);
+    return NULL;
+  }
+
+  switch (self->gst_tex_target) {
+    case GST_GL_TEXTURE_TARGET_2D:
+      tex_width = GST_VIDEO_INFO_WIDTH (&self->v_info);
+      tex_height = GST_VIDEO_INFO_HEIGHT (&self->v_info);
+      break;
+    case GST_GL_TEXTURE_TARGET_EXTERNAL_OES:{
+      GtkWidget *widget = (GtkWidget *) self->picture;
+      gint scale;
+
+      scale = gtk_widget_get_scale_factor (widget);
+      tex_width = gtk_widget_get_width (widget) * scale;
+      tex_height = gtk_widget_get_height (widget) * scale;
+
+      if (G_LIKELY (_ext_texture_into_2d (self, tex_width, tex_height)))
+        break;
+
+      return NULL;
+    }
+    default:
+      g_assert_not_reached ();
+      return NULL;
+  }
+
+  texture = gdk_gl_texture_new (self->gdk_context,
+      self->texture_id, tex_width, tex_height, NULL, NULL);
+
+  _gdk_gl_context_set_active (self, FALSE);
+
+  return texture;
+}
+
+typedef gboolean (*MemTypeCheckFunc) (gpointer data);
+
+static gboolean
+buffer_memory_type_check (GstBuffer *buffer, MemTypeCheckFunc func)
+{
+  guint i, n_mems;
+
+  n_mems = gst_buffer_n_memory (buffer);
+
+  for (i = 0; i < n_mems; i++) {
+    if (!func (gst_buffer_peek_memory (buffer, i)))
+      return FALSE;
+  }
+
+  return n_mems > 0;
+}
+
+static gboolean
+verify_dmabuf_memory (GtkClapperObject *self, guint n_planes,
+    gint *fds, gsize *offsets)
+{
+  guint i;
+
+  for (i = 0; i < n_planes; i++) {
+    GstMemory *memory;
+    gsize plane_size, mem_skip;
+    guint mem_idx, length;
+
+    plane_size = gst_gl_get_plane_data_size (&self->v_info, NULL, i);
+
+    if (!gst_buffer_find_memory (self->buffer,
+        GST_VIDEO_INFO_PLANE_OFFSET (&self->v_info, i),
+        plane_size, &mem_idx, &length, &mem_skip)) {
+      GST_DEBUG_OBJECT (self, "Could not find memory %u", i);
+      return FALSE;
+    }
+
+    /* We can't have more then one DMABuf per plane */
+    if (length != 1) {
+      GST_DEBUG_OBJECT (self, "Data for plane %u spans %u memories",
+          i, length);
+      return FALSE;
+    }
+
+    memory = gst_buffer_peek_memory (self->buffer, mem_idx);
+
+    offsets[i] = memory->offset + mem_skip;
+    fds[i] = gst_dmabuf_memory_get_fd (memory);
+  }
+
+  return TRUE;
+}
+
+static GdkTexture *
+obtain_texture_from_current_buffer (GtkClapperObject *self)
+{
+  GdkTexture *texture = NULL;
+  GstVideoFrame frame;
+
+  /* DMABuf */
+  if (buffer_memory_type_check (self->buffer, (MemTypeCheckFunc) gst_is_dmabuf_memory)) {
+    gsize offsets[GST_VIDEO_MAX_PLANES];
+    gint fds[GST_VIDEO_MAX_PLANES];
+    guint n_planes;
+
+    n_planes = GST_VIDEO_INFO_N_PLANES (&self->v_info);
+
+    if (!verify_dmabuf_memory (self, n_planes, fds, offsets)) {
+      GST_ERROR ("DMABuf memory is invalid");
+      return NULL;
+    }
+
+    if (!((texture = gtk_clapper_object_import_dmabuf (self, fds, offsets))))
+      GST_ERROR ("Could not create texture from DMABuf");
+
+    return texture;
+  }
+
+  /* GL Memory */
+  if (buffer_memory_type_check (self->buffer, (MemTypeCheckFunc) gst_is_gl_memory)) {
+    if (gst_video_frame_map (&frame, &self->v_info, self->buffer, GST_MAP_READ | GST_MAP_GL)) {
+
+      GST_FIXME_OBJECT (self, "Handle GstGLMemory");
+
+      texture = gdk_gl_texture_new (
+          self->gdk_context,
+          *(guint *) GST_VIDEO_FRAME_PLANE_DATA (&frame, 0),
+          GST_VIDEO_FRAME_WIDTH (&frame),
+          GST_VIDEO_FRAME_HEIGHT (&frame),
+          NULL, NULL);
+
+      gst_video_frame_unmap (&frame);
+    }
+
+    return texture;
+  }
+
+  /* RAW */
+  if (gst_video_frame_map (&frame, &self->v_info, self->buffer, GST_MAP_READ)) {
+    GBytes *bytes;
+
+    /* Our ref on a buffer together with 2 buffers pool ensures that
+     * current buffer will not be freed while another one is prepared */
+    bytes = g_bytes_new_with_free_func (
+        GST_VIDEO_FRAME_PLANE_DATA (&frame, 0),
+        GST_VIDEO_FRAME_HEIGHT (&frame) * GST_VIDEO_FRAME_PLANE_STRIDE (&frame, 0),
+        NULL, NULL);
+
+    texture = gdk_memory_texture_new (
+        GST_VIDEO_FRAME_WIDTH (&frame),
+        GST_VIDEO_FRAME_HEIGHT (&frame),
+        video_format_to_gdk_memory_format (GST_VIDEO_FRAME_FORMAT (&frame)),
+        bytes,
+        GST_VIDEO_FRAME_PLANE_STRIDE (&frame, 0));
+
+    g_bytes_unref (bytes);
+    gst_video_frame_unmap (&frame);
+  }
+
+  return texture;
+}
+
+static gboolean
+calculate_display_par (GtkClapperObject *self, GstVideoInfo *info)
+{
+  gboolean success;
+  gint width, height;
+  gint par_n, par_d;
+  gint display_par_n, display_par_d;
+
+  width = GST_VIDEO_INFO_WIDTH (info);
+  height = GST_VIDEO_INFO_HEIGHT (info);
+
+  par_n = GST_VIDEO_INFO_PAR_N (info);
+  par_d = GST_VIDEO_INFO_PAR_D (info);
+
+  if (!par_n)
+    par_n = 1;
+
+  /* User set props */
+  if (self->par_n != 0 && self->par_d != 0) {
+    display_par_n = self->par_n;
+    display_par_d = self->par_d;
+  } else {
+    display_par_n = 1;
+    display_par_d = 1;
+  }
+
+  if ((success = gst_video_calculate_display_ratio (&self->display_ratio_num,
+      &self->display_ratio_den, width, height, par_n, par_d, display_par_n,
+      display_par_d))) {
+    GST_LOG ("PAR: %u/%u, DAR: %u/%u", par_n, par_d, display_par_n, display_par_d);
+  }
+
+  return success;
+}
+
+static void
+update_display_size (GtkClapperObject *self)
+{
+  guint display_ratio_num, display_ratio_den;
+  gint width, height;
+
+  display_ratio_num = self->display_ratio_num;
+  display_ratio_den = self->display_ratio_den;
+
+  width = GST_VIDEO_INFO_WIDTH (&self->v_info);
+  height = GST_VIDEO_INFO_HEIGHT (&self->v_info);
+
+  if (height % display_ratio_den == 0) {
+    GST_DEBUG ("Keeping video height");
+
+    self->display_width = (guint)
+        gst_util_uint64_scale_int (height, display_ratio_num, display_ratio_den);
+    self->display_height = height;
+  } else if (width % display_ratio_num == 0) {
+    GST_DEBUG ("Keeping video width");
+
+    self->display_width = width;
+    self->display_height = (guint)
+        gst_util_uint64_scale_int (width, display_ratio_den, display_ratio_num);
+  } else {
+    GST_DEBUG ("Approximating while keeping video height");
+
+    self->display_width = (guint)
+        gst_util_uint64_scale_int (height, display_ratio_num, display_ratio_den);
+    self->display_height = height;
+  }
+
+  self->display_aspect_ratio = ((gdouble) self->display_width
+      / (gdouble) self->display_height);
+  GST_DEBUG ("Scaling to %dx%d", self->display_width, self->display_height);
+}
+
+static void
+update_paintable (GtkClapperObject *self, GdkPaintable *paintable)
+{
+  /* No change, so discard the new one */
+  if (self->paintable == paintable) {
+    if (paintable)
+      g_object_unref (paintable);
+
+    return;
+  }
+
+  if (self->paintable)
+    g_object_unref (self->paintable);
+
+  self->paintable = paintable;
+
+  if (self->pending_resize) {
+    update_display_size (self);
+    gdk_paintable_invalidate_size ((GdkPaintable *) self);
+
+    self->pending_resize = FALSE;
+  }
+
+  gdk_paintable_invalidate_contents ((GdkPaintable *) self);
+}
+
+static gboolean
+draw_on_main_cb (GtkClapperObject *self)
+{
+  GdkTexture *texture;
+
+  GTK_CLAPPER_OBJECT_LOCK (self);
+
+  /* Replace used buffer and set matching v_info */
+  gst_buffer_replace (&self->buffer, self->pending_buffer);
+  self->v_info = self->pending_v_info;
+
+  texture = obtain_texture_from_current_buffer (self);
+  if (texture)
+    update_paintable (self, (GdkPaintable *) texture);
+
+  self->draw_id = 0;
+  GTK_CLAPPER_OBJECT_UNLOCK (self);
+
+  return G_SOURCE_REMOVE;
+}
+
+void
+gtk_clapper_object_set_element (GtkClapperObject *self, GstElement *element)
+{
+  g_weak_ref_set (&self->element, element);
+}
+
+gboolean
+gtk_clapper_object_set_format (GtkClapperObject *self, GstVideoInfo *v_info)
+{
+  GTK_CLAPPER_OBJECT_LOCK (self);
+
+  if (gst_video_info_is_equal (&self->pending_v_info, v_info)) {
+    GTK_CLAPPER_OBJECT_UNLOCK (self);
+    return TRUE;
+  }
+
+  if (!calculate_display_par (self, v_info)) {
+    GTK_CLAPPER_OBJECT_UNLOCK (self);
+    return FALSE;
+  }
+
+  self->pending_resize = TRUE;
+  self->pending_v_info = *v_info;
+
+  GTK_CLAPPER_OBJECT_UNLOCK (self);
+
+  return TRUE;
+}
+
+void
+gtk_clapper_object_set_buffer (GtkClapperObject *self, GstBuffer *buffer)
+{
+  GstVideoMeta *meta = NULL;
+
+  GTK_CLAPPER_OBJECT_LOCK (self);
+
+  gst_buffer_replace (&self->pending_buffer, buffer);
+
+  if (self->draw_id) {
+    GTK_CLAPPER_OBJECT_UNLOCK (self);
+    return;
+  }
+
+  if (self->pending_buffer)
+    meta = gst_buffer_get_video_meta (self->pending_buffer);
+
+  /* Update pending info from video meta */
+  if (meta) {
+    guint i;
+
+    GST_VIDEO_INFO_WIDTH (&self->pending_v_info) = meta->width;
+    GST_VIDEO_INFO_HEIGHT (&self->pending_v_info) = meta->height;
+
+    for (i = 0; i < meta->n_planes; i++) {
+      GST_VIDEO_INFO_PLANE_OFFSET (&self->pending_v_info, i) = meta->offset[i];
+      GST_VIDEO_INFO_PLANE_STRIDE (&self->pending_v_info, i) = meta->stride[i];
+    }
+  }
+
+  self->draw_id = g_idle_add_full (G_PRIORITY_DEFAULT,
+      (GSourceFunc) draw_on_main_cb, self, NULL);
+
+  GTK_CLAPPER_OBJECT_UNLOCK (self);
+}
+
+GtkClapperObject *
+gtk_clapper_object_new (void)
+{
+  return g_object_new (GTK_TYPE_CLAPPER_OBJECT, NULL);
+}
+
+GtkWidget *
+gtk_clapper_object_get_widget (GtkClapperObject *self)
+{
+  return (GtkWidget *) self->picture;
+}
+
+static gboolean
+wrap_current_gl (GstGLDisplay *display, GstGLPlatform platform, GstGLContext **context)
+{
+  GstGLAPI gl_api = GST_GL_API_NONE;
+  guint gl_major = 0, gl_minor = 0;
+
+  gl_api = gst_gl_context_get_current_gl_api (platform, &gl_major, &gl_minor);
+
+  if (gl_api) {
+    const gboolean is_es = gl_api & (GST_GL_API_GLES1 | GST_GL_API_GLES2);
+    gchar *gl_api_str = gst_gl_api_to_string (gl_api);
+    guintptr gl_handle = 0;
+
+    GST_INFO ("Using GL API: %s, ver: %d.%d", gl_api_str, gl_major, gl_minor);
+    g_free (gl_api_str);
+
+    if (is_es && platform == GST_GL_PLATFORM_EGL && !g_getenv ("GST_GL_API")) {
+      GST_DEBUG ("No GST_GL_API env and GTK is using EGL GLES2, enforcing it");
+      gst_gl_display_filter_gl_api (display, GST_GL_API_GLES2);
+    }
+
+    gl_handle = gst_gl_context_get_current_gl_context (platform);
+    if (gl_handle) {
+      if ((*context = gst_gl_context_new_wrapped (display,
+          gl_handle, platform, gl_api)))
+        return TRUE;
+    }
+  }
+
+  return FALSE;
+}
+
+static void
+retrieve_gl_context_on_main (GtkClapperObject *self)
+{
+  GdkDisplay *gdk_display;
+  GstGLPlatform platform = GST_GL_PLATFORM_NONE;
+  GError *error = NULL;
+
+  gst_clear_object (&self->wrapped_context);
+  g_clear_object (&self->gdk_context);
+
+  gtk_widget_realize (GTK_WIDGET (self->picture));
+  if (!((self->gdk_context = gdk_surface_create_gl_context (gtk_native_get_surface (
+      gtk_widget_get_native (GTK_WIDGET (self->picture))), &error)))) {
+    GST_ERROR_OBJECT (self, "Error creating Gdk GL context: %s",
+        error ? error->message : "No error set by Gdk");
+    g_clear_error (&error);
+    return;
+  }
+
+  //gdk_gl_context_set_use_es (self->gdk_context, TRUE);
+  //gdk_gl_context_realize (self->gdk_context, &error);
+
+  gdk_display = gdk_gl_context_get_display (self->gdk_context);
+
+#if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
+  if (GDK_IS_X11_DISPLAY (gdk_display)) {
+    gpointer display_ptr;
+#if GST_GL_HAVE_PLATFORM_EGL && GTK_CHECK_VERSION(4,3,1)
+    display_ptr = gdk_x11_display_get_egl_display (gdk_display);
+    if (display_ptr)
+      self->display = (GstGLDisplay *)
+          gst_gl_display_egl_new_with_egl_display (display_ptr);
+#endif
+  }
+#endif
+#if GST_GL_HAVE_WINDOW_WAYLAND && defined (GDK_WINDOWING_WAYLAND)
+  if (GDK_IS_WAYLAND_DISPLAY (gdk_display)) {
+    struct wl_display *wayland_display =
+        gdk_wayland_display_get_wl_display (gdk_display);
+    self->display = (GstGLDisplay *)
+        gst_gl_display_wayland_new_with_display (wayland_display);
+  }
+#endif
+  if (G_UNLIKELY (!self->display)) {
+    GST_WARNING_OBJECT (self, "Unknown Gdk display!");
+    self->display = gst_gl_display_new ();
+  }
+
+#if GST_GL_HAVE_PLATFORM_EGL
+#if GST_GL_HAVE_WINDOW_WAYLAND && defined (GDK_WINDOWING_WAYLAND)
+  if (GST_IS_GL_DISPLAY_WAYLAND (self->display)) {
+    platform = GST_GL_PLATFORM_EGL;
+    GST_DEBUG ("Using EGL on Wayland");
+    goto have_platform;
+  }
+#endif
+#if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
+  if (GST_IS_GL_DISPLAY_EGL (self->display)) {
+    platform = GST_GL_PLATFORM_EGL;
+    GST_DEBUG ("Using EGL on x11");
+    goto have_platform;
+  }
+#endif
+#endif /* GST_GL_HAVE_PLATFORM_EGL */
+
+  GST_ERROR ("Unsupported GL platform");
+  return;
+
+have_platform:
+  g_object_ref (self->gdk_context);
+  gdk_gl_context_make_current (self->gdk_context);
+
+  if (!wrap_current_gl (self->display, platform, &self->wrapped_context)) {
+    GST_WARNING ("Could not retrieve Gdk OpenGL context");
+    return;
+  }
+
+  GST_INFO ("Retrieved Gdk OpenGL context %" GST_PTR_FORMAT, self->wrapped_context);
+  gst_gl_context_activate (self->wrapped_context, TRUE);
+
+  if (!gst_gl_context_fill_info (self->wrapped_context, &error)) {
+    GST_ERROR ("Failed to retrieve Gdk context info: %s", error->message);
+    g_clear_error (&error);
+    g_clear_object (&self->wrapped_context);
+  }
+
+  /* Deactivate in both places */
+  _gdk_gl_context_set_active (self, FALSE);
+}
+
+gboolean
+gtk_clapper_object_init_winsys (GtkClapperObject *self)
+{
+  GError *error = NULL;
+
+  GTK_CLAPPER_OBJECT_LOCK (self);
+
+  if (self->display && self->gdk_context && self->wrapped_context) {
+    GST_TRACE ("Have already initialized contexts");
+    GTK_CLAPPER_OBJECT_UNLOCK (self);
+    return TRUE;
+  }
+
+  if (!self->wrapped_context) {
+    GTK_CLAPPER_OBJECT_UNLOCK (self);
+    gst_gtk_invoke_on_main ((GThreadFunc) (GCallback) retrieve_gl_context_on_main, self);
+    GTK_CLAPPER_OBJECT_LOCK (self);
+  }
+
+  if (!GST_IS_GL_CONTEXT (self->wrapped_context)) {
+    GST_FIXME ("Could not retrieve Gdk GL context");
+    GTK_CLAPPER_OBJECT_UNLOCK (self);
+    return FALSE;
+  }
+
+  GTK_CLAPPER_OBJECT_UNLOCK (self);
+
+  return TRUE;
+}
+
+/*
+ * GdkPaintableInterface
+ */
+static void
+gtk_clapper_object_paintable_snapshot (GdkPaintable *paintable,
+    GdkSnapshot  *snapshot, gdouble width, gdouble height)
+{
+  GtkClapperObject *self = GTK_CLAPPER_OBJECT_CAST (paintable);
+
+  if (self->paintable)
+    gdk_paintable_snapshot (self->paintable, snapshot, width, height);
+}
+
+static GdkPaintable *
+gtk_clapper_object_paintable_get_current_image (GdkPaintable *paintable)
+{
+  GtkClapperObject *self = GTK_CLAPPER_OBJECT_CAST (paintable);
+
+  return (self->paintable)
+      ? g_object_ref (self->paintable)
+      : gdk_paintable_new_empty (0, 0);
+}
+
+static gint
+gtk_clapper_object_paintable_get_intrinsic_width (GdkPaintable *paintable)
+{
+  GtkClapperObject *self = GTK_CLAPPER_OBJECT_CAST (paintable);
+
+  return self->display_width;
+}
+
+static gint
+gtk_clapper_object_paintable_get_intrinsic_height (GdkPaintable *paintable)
+{
+  GtkClapperObject *self = GTK_CLAPPER_OBJECT_CAST (paintable);
+
+  return self->display_height;
+}
+
+static gdouble
+gtk_clapper_object_paintable_get_intrinsic_aspect_ratio (GdkPaintable *paintable)
+{
+  GtkClapperObject *self = GTK_CLAPPER_OBJECT_CAST (paintable);
+
+  return self->display_aspect_ratio;
+}
+
+static void
+gtk_clapper_object_paintable_iface_init (GdkPaintableInterface *iface)
+{
+  iface->snapshot = gtk_clapper_object_paintable_snapshot;
+  iface->get_current_image = gtk_clapper_object_paintable_get_current_image;
+  iface->get_intrinsic_width = gtk_clapper_object_paintable_get_intrinsic_width;
+  iface->get_intrinsic_height = gtk_clapper_object_paintable_get_intrinsic_height;
+  iface->get_intrinsic_aspect_ratio = gtk_clapper_object_paintable_get_intrinsic_aspect_ratio;
+}

lib/gst/plugin/gtkclapperobject.h

@@ -0,0 +1,139 @@
+/*
+ * GStreamer
+ * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
+ * Copyright (C) 2020-2022 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <gst/gl/gl.h>
+
+#include <gst/gl/gstglfuncs.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_CLAPPER_OBJECT            (gtk_clapper_object_get_type ())
+#define GTK_IS_CLAPPER_OBJECT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CLAPPER_OBJECT))
+#define GTK_IS_CLAPPER_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CLAPPER_OBJECT))
+#define GTK_CLAPPER_OBJECT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CLAPPER_OBJECT, GtkClapperObjectClass))
+#define GTK_CLAPPER_OBJECT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CLAPPER_OBJECT, GtkClapperObjectClass))
+#define GTK_CLAPPER_OBJECT(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CLAPPER_OBJECT, GtkClapperObject))
+#define GTK_CLAPPER_OBJECT_CAST(obj)       ((GtkClapperObject*)(obj))
+
+#define GTK_CLAPPER_OBJECT_LOCK(w)         g_mutex_lock(&((GtkClapperObject*)(w))->lock)
+#define GTK_CLAPPER_OBJECT_UNLOCK(w)       g_mutex_unlock(&((GtkClapperObject*)(w))->lock)
+
+typedef struct _GtkClapperObject GtkClapperObject;
+typedef struct _GtkClapperObjectClass GtkClapperObjectClass;
+
+struct _GtkClapperObject
+{
+  GObject parent;
+
+  GtkPicture *picture;
+  GdkPaintable *paintable;
+
+  GstGLDisplay *display;
+  GdkGLContext *gdk_context;
+  GstGLContext *wrapped_context;
+  GstGLContext *gst_context;
+
+  /* properties */
+  gboolean force_aspect_ratio;
+  gint par_n, par_d;
+  gboolean keep_last_frame;
+
+  gint display_width;
+  gint display_height;
+  gdouble display_aspect_ratio;
+
+  /* Object dimensions */
+  gint scaled_width;
+  gint scaled_height;
+
+  /* Position coords */
+  gdouble last_pos_x;
+  gdouble last_pos_y;
+
+  gboolean negotiated;
+  gboolean ignore_buffers;
+
+  GstBuffer *pending_buffer;
+  GstBuffer *buffer;
+
+  GstVideoInfo pending_v_info;
+  GstVideoInfo v_info;
+
+  guint texture_id, oes_texture_id, next_texture_id;
+
+  /* resize */
+  gboolean pending_resize;
+  guint display_ratio_num;
+  guint display_ratio_den;
+
+  /*< private >*/
+  GMutex lock;
+  GWeakRef element;
+
+  /* event controllers */
+  GtkEventController *key_controller;
+  GtkEventController *motion_controller;
+  GtkGesture *click_gesture;
+
+  /* Pending draw idles callback */
+  guint draw_id;
+
+
+
+
+  GstGLTextureTarget gst_tex_target;
+  guint gl_tex_target;
+
+
+  GstGLShader *shader;
+
+  GLuint vao;
+  GLuint vertex_buffer;
+  GLint attr_position;
+  GLint attr_texture;
+
+  gboolean initiated;
+
+
+  guint frame_buffer;
+};
+
+struct _GtkClapperObjectClass
+{
+  GObjectClass parent_class;
+};
+
+GType              gtk_clapper_object_get_type             (void);
+GtkClapperObject * gtk_clapper_object_new                  (void);
+GtkWidget *        gtk_clapper_object_get_widget           (GtkClapperObject *object);
+
+gboolean           gtk_clapper_object_init_winsys          (GtkClapperObject *object);
+
+gboolean           gtk_clapper_object_set_format           (GtkClapperObject *object, GstVideoInfo *v_info);
+void               gtk_clapper_object_set_buffer           (GtkClapperObject *object, GstBuffer *buffer);
+void               gtk_clapper_object_set_element          (GtkClapperObject *object, GstElement *element);
+
+G_END_DECLS

lib/gst/plugin/meson.build

@@ -0,0 +1,63 @@
+gst_plugins_libdir = join_paths(prefix, libdir, 'gstreamer-1.0')
+
+gst_clapper_plugin_args = [
+  '-DHAVE_CONFIG_H',
+  '-DGST_USE_UNSTABLE_API',
+]
+gst_clapper_plugin_deps = [
+  gtk4_dep,
+  gst_dep,
+  gstbase_dep,
+  gstvideo_dep,
+  gstallocators_dep,
+]
+
+if get_option('default_library') == 'static'
+  gst_clapper_plugin_args += ['-DGST_STATIC_COMPILATION']
+endif
+
+gst_clapper_plugin_option = get_option('gst-plugin')
+if gst_clapper_plugin_option.disabled()
+  subdir_done()
+endif
+
+foreach dep : gst_clapper_plugin_deps
+  if not dep.found()
+    if gst_clapper_plugin_option.enabled()
+      error('GStreamer plugin was enabled, but required dependencies were not found')
+    endif
+    subdir_done()
+  endif
+endforeach
+
+if not have_gtk_gl_windowing
+  if gst_clapper_plugin_option.enabled()
+    error('GTK4 widget requires GL windowing')
+  else
+    subdir_done()
+  endif
+endif
+
+if not gtk4_dep.version().version_compare('>=4.6.0')
+  if gst_clapper_plugin_option.enabled()
+    error('GTK4 version on this system is too old, plugin needs 4.6.0+')
+  else
+    subdir_done()
+  endif
+endif
+
+gst_clapper_plugin_sources = [
+  'gstclappersink.c',
+  'gtkclapperobject.c',
+  'gstgtkutils.c',
+  'gstplugin.c',
+]
+
+library('gstclapper',
+  gst_clapper_plugin_sources,
+  c_args: gst_clapper_plugin_args,
+  include_directories: configinc,
+  dependencies: gst_clapper_plugin_deps + gtk_deps,
+  install: true,
+  install_dir: gst_plugins_libdir,
+)

lib/meson.build

@@ -0,0 +1,301 @@
+glib_req = '>= 2.56.0'
+gst_req = '>= 1.19.1'
+
+api_version = '1.0'
+libversion = meson.project_version()
+
+cc = meson.get_compiler('c')
+cxx = meson.get_compiler('cpp')
+
+cdata = configuration_data()
+
+if cc.get_id() == 'msvc'
+  msvc_args = [
+    # Ignore several spurious warnings for things gstreamer does very commonly
+    # If a warning is completely useless and spammy, use '/wdXXXX' to suppress it
+    # If a warning is harmless but hard to fix, use '/woXXXX' so it's shown once
+    # NOTE: Only add warnings here if you are sure they're spurious
+    '/wd4018', # implicit signed/unsigned conversion
+    '/wd4146', # unary minus on unsigned (beware INT_MIN)
+    '/wd4244', # lossy type conversion (e.g. double -> int)
+    '/wd4305', # truncating type conversion (e.g. double -> float)
+    cc.get_supported_arguments(['/utf-8']), # set the input encoding to utf-8
+
+    # Enable some warnings on MSVC to match GCC/Clang behaviour
+    '/w14062', # enumerator 'identifier' in switch of enum 'enumeration' is not handled
+    '/w14101', # 'identifier' : unreferenced local variable
+    '/w14189', # 'identifier' : local variable is initialized but not referenced
+  ]
+  add_project_arguments(msvc_args, language: ['c', 'cpp'])
+  noseh_link_args = ['/SAFESEH:NO']
+else
+  if cxx.has_argument('-Wno-non-virtual-dtor')
+    add_project_arguments('-Wno-non-virtual-dtor', language: 'cpp')
+  endif
+  noseh_link_args = []
+endif
+
+if cc.has_link_argument('-Wl,-Bsymbolic-functions')
+  add_project_link_arguments('-Wl,-Bsymbolic-functions', language: 'c')
+endif
+
+# Symbol visibility
+if cc.get_id() == 'msvc'
+  export_define = '__declspec(dllexport) extern'
+elif cc.has_argument('-fvisibility=hidden')
+  add_project_arguments('-fvisibility=hidden', language: 'c')
+  add_project_arguments('-fvisibility=hidden', language: 'cpp')
+  export_define = 'extern __attribute__ ((visibility ("default")))'
+else
+  export_define = 'extern'
+endif
+
+# Passing this through the command line would be too messy
+cdata.set('GST_API_EXPORT', export_define)
+
+# Disable strict aliasing
+if cc.has_argument('-fno-strict-aliasing')
+  add_project_arguments('-fno-strict-aliasing', language: 'c')
+endif
+if cxx.has_argument('-fno-strict-aliasing')
+  add_project_arguments('-fno-strict-aliasing', language: 'cpp')
+endif
+
+if not get_option('deprecated-glib-api')
+  message('Disabling deprecated GLib API')
+  add_project_arguments('-DG_DISABLE_DEPRECATED', language: 'c')
+endif
+
+if not get_option('devel-checks')
+  message('Disabling GLib cast checks')
+  add_project_arguments('-DG_DISABLE_CAST_CHECKS', language: 'c')
+
+  message('Disabling GLib asserts')
+  add_project_arguments('-DG_DISABLE_ASSERT', language: 'c')
+
+  message('Disabling GLib checks')
+  add_project_arguments('-DG_DISABLE_CHECKS', language: 'c')
+endif
+
+check_headers = [
+  ['HAVE_DLFCN_H', 'dlfcn.h'],
+  ['HAVE_FCNTL_H', 'fcntl.h'],
+  ['HAVE_INTTYPES_H', 'inttypes.h'],
+  ['HAVE_MEMORY_H', 'memory.h'],
+  ['HAVE_NETINET_IN_H', 'netinet/in.h'],
+  ['HAVE_NETINET_IP_H', 'netinet/ip.h'],
+  ['HAVE_NETINET_TCP_H', 'netinet/tcp.h'],
+  ['HAVE_PTHREAD_H', 'pthread.h'],
+  ['HAVE_STDINT_H', 'stdint.h'],
+  ['HAVE_STDLIB_H', 'stdlib.h'],
+  ['HAVE_STRINGS_H', 'strings.h'],
+  ['HAVE_STRING_H', 'string.h'],
+  ['HAVE_SYS_PARAM_H', 'sys/param.h'],
+  ['HAVE_SYS_SOCKET_H', 'sys/socket.h'],
+  ['HAVE_SYS_STAT_H', 'sys/stat.h'],
+  ['HAVE_SYS_TIME_H', 'sys/time.h'],
+  ['HAVE_SYS_TYPES_H', 'sys/types.h'],
+  ['HAVE_SYS_UTSNAME_H', 'sys/utsname.h'],
+  ['HAVE_UNISTD_H', 'unistd.h'],
+]
+
+foreach h : check_headers
+  if cc.has_header(h.get(1))
+    cdata.set(h.get(0), 1)
+  endif
+endforeach
+
+check_functions = [
+  ['HAVE_DCGETTEXT', 'dcgettext'],
+  ['HAVE_GETPAGESIZE', 'getpagesize'],
+  ['HAVE_GMTIME_R', 'gmtime_r'],
+  ['HAVE_MEMFD_CREATE', 'memfd_create'],
+  ['HAVE_MMAP', 'mmap'],
+  ['HAVE_PIPE2', 'pipe2'],
+  ['HAVE_GETRUSAGE', 'getrusage', '#include<sys/resource.h>'],
+]
+
+foreach f : check_functions
+  prefix = ''
+  if f.length() == 3
+    prefix = f.get(2)
+  endif
+  if cc.has_function(f.get(1), prefix: prefix)
+    cdata.set(f.get(0), 1)
+  endif
+endforeach
+
+cdata.set('SIZEOF_CHAR', cc.sizeof('char'))
+cdata.set('SIZEOF_INT', cc.sizeof('int'))
+cdata.set('SIZEOF_LONG', cc.sizeof('long'))
+cdata.set('SIZEOF_SHORT', cc.sizeof('short'))
+cdata.set('SIZEOF_VOIDP', cc.sizeof('void*'))
+
+cdata.set_quoted('VERSION', libversion)
+cdata.set_quoted('PACKAGE', 'gst-plugins-clapper')
+cdata.set_quoted('PACKAGE_VERSION', libversion)
+cdata.set_quoted('PACKAGE_BUGREPORT', 'https://github.com/Rafostar/clapper/issues/new')
+cdata.set_quoted('PACKAGE_NAME', 'GStreamer Clapper Libs')
+cdata.set_quoted('GST_API_VERSION', api_version)
+cdata.set_quoted('GST_LICENSE', 'LGPL')
+cdata.set_quoted('LIBDIR', pkglibdir)
+cdata.set_quoted('LOCALEDIR', join_paths(get_option('prefix'), get_option('localedir')))
+
+warning_flags = [
+  '-Wmissing-declarations',
+  '-Wredundant-decls',
+  '-Wwrite-strings',
+  '-Wformat',
+  '-Wformat-security',
+  '-Winit-self',
+  '-Wmissing-include-dirs',
+  '-Waddress',
+  '-Wno-multichar',
+  '-Wvla',
+  '-Wpointer-arith',
+]
+warning_c_flags = [
+  '-Wmissing-prototypes',
+  '-Wdeclaration-after-statement',
+  '-Wold-style-definition',
+]
+warning_cxx_flags = [
+  '-Wformat-nonliteral',
+]
+
+foreach extra_arg : warning_c_flags
+  if cc.has_argument (extra_arg)
+    add_project_arguments([extra_arg], language: 'c')
+  endif
+endforeach
+
+foreach extra_arg : warning_cxx_flags
+  if cxx.has_argument (extra_arg)
+    add_project_arguments([extra_arg], language: 'cpp')
+  endif
+endforeach
+
+foreach extra_arg : warning_flags
+  if cc.has_argument (extra_arg)
+    add_project_arguments([extra_arg], language: 'c')
+  endif
+  if cxx.has_argument (extra_arg)
+    add_project_arguments([extra_arg], language: 'cpp')
+  endif
+endforeach
+
+cdata.set_quoted('GST_PACKAGE_NAME', 'GStreamer Plugins Clapper')
+cdata.set_quoted('GST_PACKAGE_ORIGIN', 'https://github.com/Rafostar/clapper')
+
+# Mandatory GST deps
+gst_dep = dependency('gstreamer-1.0', version: gst_req,
+  fallback: ['gstreamer', 'gst_dep'])
+gstbase_dep = dependency('gstreamer-base-1.0', version: gst_req,
+  fallback: ['gstreamer', 'gst_base_dep'])
+gstpbutils_dep = dependency('gstreamer-pbutils-1.0', version: gst_req,
+  fallback: ['gst-plugins-base', 'pbutils_dep'])
+gstaudio_dep = dependency('gstreamer-audio-1.0', version: gst_req,
+  fallback: ['gst-plugins-base', 'audio_dep'])
+gsttag_dep = dependency('gstreamer-tag-1.0', version: gst_req,
+  fallback: ['gst-plugins-base', 'tag_dep'])
+gstvideo_dep = dependency('gstreamer-video-1.0', version: gst_req,
+  fallback: ['gst-plugins-base', 'video_dep'])
+gstallocators_dep = dependency('gstreamer-allocators-1.0', version: gst_req,
+  fallback : ['gst-plugins-base', 'allocators_dep'])
+
+# GStreamer OpenGL
+gstgl_dep = dependency('gstreamer-gl-1.0', version: gst_req,
+  fallback: ['gst-plugins-base', 'gstgl_dep'], required: true)
+gstglx11_dep = dependency('', required: false)
+gstglwayland_dep = dependency('', required: false)
+gstglegl_dep = dependency('', required: false)
+
+gst_gl_apis = gstgl_dep.get_pkgconfig_variable('gl_apis')
+gst_gl_winsys = gstgl_dep.get_pkgconfig_variable('gl_winsys')
+gst_gl_platforms = gstgl_dep.get_pkgconfig_variable('gl_platforms')
+
+message('GStreamer OpenGL window systems: @0@'.format(gst_gl_winsys))
+message('GStreamer OpenGL platforms: @0@'.format(gst_gl_platforms))
+message('GStreamer OpenGL apis: @0@'.format(gst_gl_apis))
+
+foreach ws : ['x11', 'wayland', 'android', 'cocoa', 'eagl', 'win32', 'dispmanx', 'viv_fb']
+  set_variable('gst_gl_have_window_@0@'.format(ws), gst_gl_winsys.contains(ws))
+endforeach
+
+foreach p : ['glx', 'egl', 'cgl', 'eagl', 'wgl']
+  set_variable('gst_gl_have_platform_@0@'.format(p), gst_gl_platforms.contains(p))
+endforeach
+
+foreach api : ['gl', 'gles2']
+  set_variable('gst_gl_have_api_@0@'.format(api), gst_gl_apis.contains(api))
+endforeach
+
+gstglproto_dep = dependency('gstreamer-gl-prototypes-1.0', version: gst_req,
+  fallback: ['gst-plugins-base', 'gstglproto_dep'], required: true)
+if gst_gl_have_window_x11
+  gstglx11_dep = dependency('gstreamer-gl-x11-1.0', version: gst_req,
+    fallback: ['gst-plugins-base', 'gstglx11_dep'], required: true)
+endif
+if gst_gl_have_window_wayland
+  gstglwayland_dep = dependency('gstreamer-gl-wayland-1.0', version: gst_req,
+    fallback: ['gst-plugins-base', 'gstglwayland_dep'], required: true)
+endif
+if gst_gl_have_platform_egl
+  gstglegl_dep = dependency('gstreamer-gl-egl-1.0', version: gst_req,
+    fallback: ['gst-plugins-base', 'gstglegl_dep'], required: true)
+endif
+
+libm = cc.find_library('m', required: false)
+glib_dep = dependency('glib-2.0', version: glib_req, fallback: ['glib', 'libglib_dep'])
+gmodule_dep = dependency('gmodule-2.0', fallback: ['glib', 'libgmodule_dep'])
+gio_dep = dependency('gio-2.0', fallback: ['glib', 'libgio_dep'])
+giounix_dep = dependency('gio-unix-2.0', version: glib_req, fallback: ['glib', 'libgiounix_dep'])
+
+cdata.set('DISABLE_ORC', 1)
+cdata.set('GST_ENABLE_EXTRA_CHECKS', get_option('devel-checks'))
+
+configinc = include_directories('.')
+libsinc = include_directories('gst')
+
+gir = find_program('g-ir-scanner')
+gir_init_section = ['--add-init-section=extern void gst_init(gint*,gchar**);' + \
+    'g_setenv("GST_REGISTRY_1.0", "@0@", TRUE);'.format(meson.current_build_dir() + '/gir_empty_registry.reg') + \
+    'g_setenv("GST_PLUGIN_PATH_1_0", "", TRUE);' + \
+    'g_setenv("GST_PLUGIN_SYSTEM_PATH_1_0", "", TRUE);' + \
+    'gst_init(NULL,NULL);', '--quiet'
+]
+
+gtk_deps = [gstgl_dep, gstglproto_dep]
+have_gtk_gl_windowing = false
+
+gtk4_dep = dependency('gtk4', required: true)
+
+if not gtk4_dep.version().version_compare('>=4.0.0')
+  error('GTK4 version on this system is too old')
+endif
+
+if gst_gl_have_window_x11 and (gst_gl_have_platform_egl or gst_gl_have_platform_glx)
+  gtk_x11_dep = dependency('gtk4-x11', required: false)
+  if gtk_x11_dep.found()
+    gtk_deps += gtk_x11_dep
+    if gst_gl_have_platform_glx
+      gtk_deps += gstglx11_dep
+    endif
+    have_gtk_gl_windowing = true
+  endif
+endif
+
+if gst_gl_have_window_wayland and gst_gl_have_platform_egl
+  gtk_wayland_dep = dependency('gtk4-wayland', required: false)
+  if gtk_wayland_dep.found()
+    gtk_deps += [gtk_wayland_dep, gstglwayland_dep]
+    have_gtk_gl_windowing = true
+  endif
+endif
+
+if gst_gl_have_platform_egl
+  gtk_deps += gstglegl_dep
+endif
+
+subdir('gst')
+configure_file(output: 'config.h', configuration: cdata)

meson.build

@@ -1,153 +1,41 @@
-project('clapper', 'c',
-  version: '0.6.1',
-  meson_version: '>= 0.64.0',
-  license: 'LGPL-2.1-or-later AND GPL-3.0-or-later', # LGPL-2.1+ for libs and gst-plugin, GPL-3.0+ for app
+project('com.github.rafostar.Clapper', 'c', 'cpp',
+  version: '0.4.1',
+  meson_version: '>= 0.50.0',
+  license: 'GPL-3.0-or-later',
   default_options: [
     'warning_level=1',
-    'buildtype=debugoptimized',
-  ],
+    'buildtype=debugoptimized'
+  ]
 )
 
-glib_req = '>= 2.76.0'
-gst_req = '>= 1.20.0'
-gtk4_req = '>= 4.10.0'
-adw_req = '>= 1.4.0'
-
-clapper_version = meson.project_version().split('-')[0]
-version_array = clapper_version.split('.')
-clapper_version_suffix = '-' + version_array[0] + '.0'
-
-clapper_api_name = meson.project_name() + clapper_version_suffix
-
-devenv = environment()
-
 gnome = import('gnome')
-pkgconfig = import('pkgconfig')
 i18n = import('i18n')
+python = import('python')
 
-prefix = get_option('prefix')
-bindir = get_option('bindir')
-datadir = get_option('datadir')
-libdir = get_option('libdir')
-localedir = get_option('localedir')
-includedir = get_option('includedir')
-optimization = get_option('optimization')
+bindir = join_paths(get_option('prefix'), get_option('bindir'))
+libdir = join_paths(get_option('prefix'), get_option('libdir'))
+datadir = join_paths(get_option('prefix'), get_option('datadir'))
 
-clapper_libdir = join_paths(prefix, libdir, clapper_api_name)
-build_optimized = optimization in ['2', '3', 's']
+pkglibdir = join_paths(libdir, meson.project_name())
+pkgdatadir = join_paths(datadir, meson.project_name())
 
-gst_dep = dependency('gstreamer-1.0',
-  version: gst_req,
-  required: false,
-)
-gst_base_dep = dependency('gstreamer-base-1.0',
-  version: gst_req,
-  required: false,
-)
-gst_video_dep = dependency('gstreamer-video-1.0',
-  version: gst_req,
-  required: false,
-)
-gst_audio_dep = dependency('gstreamer-audio-1.0',
-  version: gst_req,
-  required: false,
-)
-gst_pbutils_dep = dependency('gstreamer-pbutils-1.0',
-  version: gst_req,
-  required: false,
-)
-gst_tag_dep = dependency('gstreamer-tag-1.0',
-  version: gst_req,
-  required: false,
-)
-glib_dep = dependency('glib-2.0',
-  version: glib_req,
-  required: false,
-)
-gobject_dep = dependency('gobject-2.0',
-  version: glib_req,
-  required: false,
-)
-gio_dep = dependency('gio-2.0',
-  version: glib_req,
-  required: false,
-)
-gmodule_dep = dependency('gmodule-2.0',
-  version: glib_req,
-  required: false,
-)
-gtk4_dep = dependency('gtk4',
-  version: gtk4_req,
-  required: false,
-)
-libadwaita_dep = dependency('libadwaita-1',
-  version: adw_req,
-  required: false,
-)
+if get_option('lib') or not get_option('gst-plugin').disabled()
+  subdir('lib')
+endif
 
-cc = meson.get_compiler('c')
-libm = cc.find_library('m', required: false)
+if get_option('player')
+  subdir('bin')
+  subdir('data')
+  subdir('po')
 
-warning_flags = [
-  '-Wmissing-declarations',
-  '-Wredundant-decls',
-  '-Wwrite-strings',
-  '-Wformat',
-  '-Wformat-security',
-  '-Winit-self',
-  '-Wmissing-include-dirs',
-  '-Waddress',
-  '-Wno-multichar',
-  '-Wvla',
-  '-Wpointer-arith',
-  '-Wmissing-prototypes',
-  '-Wdeclaration-after-statement',
-  '-Wold-style-definition',
-  '-Wsign-compare',
-]
+  install_subdir('src', install_dir: pkgdatadir)
+  install_subdir('extras', install_dir: pkgdatadir)
+  install_subdir('css', install_dir: pkgdatadir)
+  install_subdir('ui', install_dir: pkgdatadir)
 
-foreach extra_arg : warning_flags
-  if cc.has_argument (extra_arg)
-    add_project_arguments([extra_arg], language: 'c')
+  python_bin = python.find_installation('python3')
+  if not python_bin.found()
+    error('No valid python3 binary found')
   endif
-endforeach
-
-if build_optimized
-  message('Disabling GLib cast checks')
-  add_project_arguments('-DG_DISABLE_CAST_CHECKS', language: 'c')
-
-  message('Disabling GLib asserts')
-  add_project_arguments('-DG_DISABLE_ASSERT', language: 'c')
-
-  message('Disabling GLib checks')
-  add_project_arguments('-DG_DISABLE_CHECKS', language: 'c')
-endif
-
-subdir('src')
-subdir('doc')
-
-meson.add_devenv(devenv)
-
-summary({
-  'prefix': prefix,
-  'bindir': bindir,
-  'datadir': datadir,
-  'libdir': libdir,
-  'localedir': localedir,
-  'includedir': includedir,
-  'optimization': optimization,
-}, section: 'Directories')
-
-summary('clapper', build_clapper ? 'Yes' : 'No', section: 'Build')
-summary('clapper-gtk', build_clappergtk ? 'Yes' : 'No', section: 'Build')
-summary('clapper-app', build_clapperapp ? 'Yes' : 'No', section: 'Build')
-summary('gst-plugin', build_gst_plugin ? 'Yes' : 'No', section: 'Build')
-summary('introspection', build_gir ? 'Yes' : 'No', section: 'Build')
-summary('vapi', build_vapi ? 'Yes' : 'No', section: 'Build')
-summary('doc', build_doc  ? 'Yes' : 'No', section: 'Build')
-
-if build_clapper
-  foreach name : clapper_possible_features
-    summary(name, clapper_available_features.contains(name) ? 'Yes' : 'No', section: 'Features')
-  endforeach
+  meson.add_install_script('build-aux/meson/postinstall.py')
 endif

meson_options.txt

@@ -1,70 +1,25 @@
-# Build
-option('clapper',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build Clapper library'
+option('player',
+  type: 'boolean',
+  value: true,
+  description: 'Build Clapper player'
 )
-option('clapper-gtk',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build Clapper GTK integration library'
-)
-option('clapper-app',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build Clapper application'
+option('lib',
+  type: 'boolean',
+  value: true,
+  description: 'Build GstClapper lib'
 )
 option('gst-plugin',
   type: 'feature',
-  value: 'auto',
+  value: 'enabled',
   description: 'Build GStreamer plugin (includes GTK video sink element)'
 )
-option('introspection',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build GObject Introspection data'
-)
-option('vapi',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build Vala bindings'
-)
-option('doc',
+option('devel-checks',
   type: 'boolean',
   value: false,
-  description: 'Build documentation'
+  description: 'GStreamer GLib checks and asserts such as API guards (disable for stable releases)'
 )
-
-# Features
-option('discoverer',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build Clapper Discoverer feature'
-)
-option('mpris',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build Clapper MPRIS feature'
-)
-option('server',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build Clapper Server feature'
-)
-
-# GStreamer plugin options
-option('glimporter',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build GL memory importer for clappersink'
-)
-option('gluploader',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build GL uploader for clappersink'
-)
-option('rawimporter',
-  type: 'feature',
-  value: 'auto',
-  description: 'Build RAW system memory importer for clappersink'
+option('deprecated-glib-api',
+  type: 'boolean',
+  value: true,
+  description: 'Allow using of deprecated GLib API'
 )

pkgs/flatpak/com.github.rafostar.Clapper-nightly.json

@@ -3,21 +3,7 @@
     "runtime": "org.gnome.Platform",
     "runtime-version": "master",
     "sdk": "org.gnome.Sdk",
-    "sdk-extensions": [
-        "org.freedesktop.Sdk.Extension.rust-nightly",
-        "org.freedesktop.Sdk.Extension.llvm16"
-    ],
-    "add-extensions": {
-        "org.freedesktop.Platform.ffmpeg-full": {
-            "version": "23.08",
-            "directory": "lib/ffmpeg",
-            "add-ld-path": ".",
-            "no-autodownload": false,
-            "autodelete": false
-        }
-    },
-    "command": "clapper",
-    "separate-locales": false,
+    "command": "com.github.rafostar.Clapper",
     "finish-args": [
         "--share=ipc",
         "--socket=fallback-x11",
@@ -28,17 +14,16 @@
         "--device=all",
         "--filesystem=xdg-run/pipewire-0:ro",
         "--filesystem=xdg-videos",
-        "--filesystem=xdg-run/gvfsd",
         "--own-name=org.mpris.MediaPlayer2.Clapper",
-        "--talk-name=org.gtk.vfs.*",
-        "--env=GST_PLUGIN_SYSTEM_PATH=/app/lib/gstreamer-1.0"
+        "--talk-name=org.gnome.Shell",
+        "--env=GST_PLUGIN_SYSTEM_PATH=/app/lib/gstreamer-1.0",
+        "--env=GST_VAAPI_ALL_DRIVERS=1"
     ],
-    "build-options": {
-        "append-path": "/usr/lib/sdk/rust-nightly/bin:/usr/lib/sdk/llvm16/bin",
-        "prepend-ld-library-path": "/usr/lib/sdk/llvm16/lib"
-    },
     "modules": [
         "flathub/shared-modules/gudev/gudev.json",
+        "flathub/lib/libsass.json",
+        "flathub/lib/sassc.json",
+        "flathub/lib/libadwaita.json",
         "flathub/lib/liba52.json",
         "flathub/lib/libmpeg2.json",
         "flathub/lib/libdv.json",
@@ -46,10 +31,9 @@
         "flathub/lib/libdvdread.json",
         "flathub/lib/libdvdnav.json",
         "flathub/lib/libass.json",
-        "flathub/lib/libmicrodns.json",
-        "testing/dav1d.json",
+        "flathub/lib/ffmpeg.json",
+        "testing/libsoup3.json",
         "testing/gstreamer.json",
-        "testing/gst-plugins-rs.json",
         "testing/gtuber.json",
         {
             "name": "clapper",
@@ -63,7 +47,6 @@
         }
     ],
     "cleanup-commands": [
-        "mkdir -p /app/lib/ffmpeg",
         "ln -s /lib/$FLATPAK_ARCH-linux-*/gstreamer-1.0/libgstpipewire.so /app/lib/gstreamer-1.0/"
     ]
 }

pkgs/flatpak/com.github.rafostar.Clapper.json

@@ -1,19 +1,9 @@
 {
     "app-id": "com.github.rafostar.Clapper",
     "runtime": "org.gnome.Platform",
-    "runtime-version": "45",
+    "runtime-version": "41",
     "sdk": "org.gnome.Sdk",
-    "add-extensions": {
-        "org.freedesktop.Platform.ffmpeg-full": {
-            "version": "23.08",
-            "directory": "lib/ffmpeg",
-            "add-ld-path": ".",
-            "no-autodownload": false,
-            "autodelete": false
-        }
-    },
-    "command": "clapper",
-    "separate-locales": false,
+    "command": "com.github.rafostar.Clapper",
     "finish-args": [
         "--share=ipc",
         "--socket=fallback-x11",
@@ -24,13 +14,16 @@
         "--device=all",
         "--filesystem=xdg-run/pipewire-0:ro",
         "--filesystem=xdg-videos",
-        "--filesystem=xdg-run/gvfsd",
         "--own-name=org.mpris.MediaPlayer2.Clapper",
-        "--talk-name=org.gtk.vfs.*",
-        "--env=GST_PLUGIN_SYSTEM_PATH=/app/lib/gstreamer-1.0"
+        "--talk-name=org.gnome.Shell",
+        "--env=GST_PLUGIN_SYSTEM_PATH=/app/lib/gstreamer-1.0",
+        "--env=GST_VAAPI_ALL_DRIVERS=1"
     ],
     "modules": [
         "flathub/shared-modules/gudev/gudev.json",
+        "flathub/lib/pango.json",
+        "flathub/lib/libsass.json",
+        "flathub/lib/sassc.json",
         "flathub/lib/liba52.json",
         "flathub/lib/libmpeg2.json",
         "flathub/lib/libdv.json",
@@ -38,16 +31,16 @@
         "flathub/lib/libdvdread.json",
         "flathub/lib/libdvdnav.json",
         "flathub/lib/libass.json",
+        "flathub/lib/ffmpeg.json",
         "flathub/lib/uchardet.json",
-        "flathub/lib/libmicrodns.json",
+        "testing/libsoup3.json",
         "flathub/gstreamer-1.0/gstreamer.json",
+        "flathub/lib/gtk4.json",
+        "flathub/lib/libadwaita.json",
         "testing/gtuber.json",
         {
             "name": "clapper",
             "buildsystem": "meson",
-            "config-opts": [
-                "-Dc_args=\"-DHAVE_GST_PATCHES=1\""
-            ],
             "sources": [
                 {
                     "type": "dir",
@@ -57,7 +50,6 @@
         }
     ],
     "cleanup-commands": [
-        "mkdir -p /app/lib/ffmpeg",
         "ln -s /lib/$FLATPAK_ARCH-linux-*/gstreamer-1.0/libgstpipewire.so /app/lib/gstreamer-1.0/"
     ]
 }

pkgs/flatpak/testing/dav1d.json

@@ -1,25 +0,0 @@
-{
-    "name": "dav1d",
-    "buildsystem": "meson",
-    "only-arches": [
-        "x86_64"
-    ],
-    "config-opts": [
-        "-Denable_tools=false",
-        "-Denable_examples=false",
-        "-Denable_tests=false",
-        "-Denable_docs=false",
-        "-Dlogging=false"
-    ],
-    "cleanup": [
-        "/include",
-        "/lib/pkgconfig"
-    ],
-    "sources": [
-        {
-            "type": "git",
-            "url": "https://code.videolan.org/videolan/dav1d.git",
-            "branch": "master"
-        }
-    ]
-}

pkgs/flatpak/testing/gst-plugins-rs.json

@@ -1,26 +0,0 @@
-{
-    "name": "gst-plugins-rs",
-    "buildsystem": "simple",
-    "only-arches": [
-        "x86_64"
-    ],
-    "build-options": {
-        "build-args": [
-            "--share=network"
-        ],
-        "env": {
-            "CARGO_HOME": "/run/build/gst-plugins-rs/cargo"
-        }
-    },
-    "sources": [
-        {
-            "type": "git",
-            "url": "https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git",
-            "branch": "main"
-        }
-    ],
-    "build-commands": [
-        "cargo install cargo-c",
-        "cargo cinstall --prefix=/app -p gst-plugin-dav1d"
-    ]
-}

pkgs/flatpak/testing/gstreamer.json

@@ -2,7 +2,7 @@
     "name": "gstreamer",
     "buildsystem": "meson",
     "config-opts": [
-        "--wrap-mode=nodownload",
+        "--wrap-mode=nofallback",
 
         "-Dbase=enabled",
         "-Dgood=enabled",
@@ -26,12 +26,26 @@
         "-Dgpl=enabled",
 
         "-Dgstreamer:benchmarks=disabled",
+        "-Dgstreamer:gobject-cast-checks=disabled",
+        "-Dgstreamer:glib-asserts=disabled",
+        "-Dgstreamer:glib-checks=disabled",
+        "-Dgstreamer:extra-checks=disabled",
 
+        "-Dgst-plugins-base:gobject-cast-checks=disabled",
+        "-Dgst-plugins-base:glib-asserts=disabled",
+        "-Dgst-plugins-base:glib-checks=disabled",
         "-Dgst-plugins-base:gl_api=opengl,gles2",
         "-Dgst-plugins-base:gl_platform=egl,glx",
 
+        "-Dgst-plugins-good:gobject-cast-checks=disabled",
+        "-Dgst-plugins-good:glib-asserts=disabled",
+        "-Dgst-plugins-good:glib-checks=disabled",
         "-Dgst-plugins-good:gtk3=disabled",
 
+        "-Dgst-plugins-bad:gobject-cast-checks=disabled",
+        "-Dgst-plugins-bad:glib-asserts=disabled",
+        "-Dgst-plugins-bad:glib-checks=disabled",
+        "-Dgst-plugins-bad:extra-checks=disabled",
         "-Dgst-plugins-bad:vulkan=disabled",
         "-Dgst-plugins-bad:webrtc=disabled",
         "-Dgst-plugins-bad:wasapi=disabled",
@@ -43,14 +57,16 @@
         "-Dgst-plugins-bad:v4l2codecs=enabled",
         "-Dgst-plugins-bad:va=enabled",
 
+        "-Dgst-plugins-ugly:gobject-cast-checks=disabled",
+        "-Dgst-plugins-ugly:glib-asserts=disabled",
+        "-Dgst-plugins-ugly:glib-checks=disabled",
         "-Dgst-plugins-ugly:mpeg2dec=enabled"
     ],
     "sources": [
         {
             "type": "git",
             "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer.git",
-            "branch": "main",
-            "disable-submodules": true
+            "branch": "main"
         }
     ]
 }

pkgs/flatpak/testing/libsoup3.json

@@ -0,0 +1,24 @@
+{
+    "name": "libsoup3",
+    "buildsystem": "meson",
+    "config-opts": [
+        "-Dintrospection=enabled",
+        "-Dvapi=disabled",
+        "-Dtests=false",
+        "-Dsysprof=disabled",
+        "-Dhttp2_tests=disabled",
+        "-Dpkcs11_tests=disabled"
+    ],
+    "cleanup": [
+        "/include",
+        "/lib/pkgconfig"
+    ],
+    "sources": [
+        {
+            "type": "git",
+            "url": "https://gitlab.gnome.org/GNOME/libsoup.git",
+            "tag": "3.0.4",
+            "commit": "25a728020c4b53b5db4c4c675070e92f947fbd4d"
+        }
+    ]
+}

pkgs/rpm/.gitignore

@@ -0,0 +1,3 @@
+.osc/
+clapper/
+.lock

pkgs/rpm/clapper.rpmlintrc

@@ -0,0 +1 @@
+addFilter("explicit-lib-dependency")

pkgs/rpm/clapper.spec

@@ -0,0 +1,193 @@
+#
+# spec file for package clapper
+#
+# Copyright (C) 2020    sp1rit
+# Copyright (C) 2020-21 Rafostar
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+%define debug_package %{nil}
+
+%global appname com.github.rafostar.Clapper
+%global gst_version 1.18.0
+%global gtk4_version 4.0.0
+%global meson_version 0.50
+%global glib2_version 2.56.0
+%global soup_version 3.0.0
+
+Name:           clapper
+Version:        0.4.1
+Release:        1%{?dist}
+Summary:        Simple and modern GNOME media player
+
+License:        GPL-3.0
+URL:            https://github.com/Rafostar/clapper
+BuildRoot:      %{_builddir}/%{name}-%{version}-build
+Source0:        _service
+
+BuildRequires:  meson >= %{meson_version}
+BuildRequires:  gtk4-devel >= %{gtk4_version}
+BuildRequires:  glib2-devel >= %{glib2_version}
+BuildRequires:  gobject-introspection-devel
+BuildRequires:  gjs
+BuildRequires:  gcc-c++
+BuildRequires:  desktop-file-utils
+BuildRequires:  hicolor-icon-theme
+
+Requires:       gjs
+Requires:       gtk4 >= %{gtk4_version}
+Requires:       libadwaita
+Requires:       hicolor-icon-theme
+
+%if 0%{?suse_version}
+# SUSE recommends group tag, while Fedora discourages their use
+Group:          Productivity/Multimedia/Video/Players
+
+BuildRequires:  update-desktop-files
+BuildRequires:  gstreamer-devel >= %{gst_version}
+BuildRequires:  gstreamer-plugins-base-devel >= %{gst_version}
+BuildRequires:  Mesa-libGLESv2-devel
+BuildRequires:  Mesa-libGLESv3-devel
+
+Requires:       libsoup-devel >= %{soup_version}
+Requires:       gstreamer >= %{gst_version}
+Requires:       gstreamer-plugins-base >= %{gst_version}
+Requires:       gstreamer-plugins-good >= %{gst_version}
+Requires:       gstreamer-plugins-bad >= %{gst_version}
+
+# Popular video decoders
+Recommends:     gstreamer-plugins-libav >= %{gst_version}
+
+# CD Playback
+Suggests:       gstreamer-plugins-ugly
+# Intel/AMD video acceleration
+Suggests:       gstreamer-plugins-vaapi
+%else
+BuildRequires:  glibc-all-langpacks
+BuildRequires:  gstreamer1-devel >= %{gst_version}
+BuildRequires:  gstreamer1-plugins-base-devel >= %{gst_version}
+BuildRequires:  mesa-libGL-devel
+BuildRequires:  mesa-libGLES-devel
+BuildRequires:  mesa-libGLU-devel
+BuildRequires:  mesa-libEGL-devel
+
+Requires:       libsoup3-devel
+Requires:       gstreamer1 >= %{gst_version}
+Requires:       gstreamer1-plugins-base >= %{gst_version}
+Requires:       gstreamer1-plugins-good >= %{gst_version}
+Requires:       gstreamer1-plugins-bad-free >= %{gst_version}
+
+# ASS subtitles (assrender)
+Recommends:     gstreamer1-plugins-bad-free-extras >= %{gst_version}
+
+# CD Playback
+Suggests:       gstreamer1-plugins-ugly-free
+# Intel/AMD video acceleration
+Suggests:       gstreamer1-vaapi
+%endif
+
+%description
+A GNOME media player built using GJS with GTK4 toolkit and powered by GStreamer with OpenGL rendering.
+
+%prep
+%setup -q -n %{_sourcedir}/%{name}-%{version} -T -D
+
+%build
+%meson
+%meson_build
+
+%install
+%meson_install
+%if 0%{?suse_version}
+%suse_update_desktop_file %{appname}
+%endif
+
+%check
+desktop-file-validate %{buildroot}%{_datadir}/applications/*.desktop
+
+%files
+%license COPYING
+%doc README.md
+%{_bindir}/%{appname}*
+%{_bindir}/clapper
+%{_datadir}/%{appname}/
+%{_datadir}/icons/hicolor/*/apps/*.svg
+%{_datadir}/glib-2.0/schemas/%{appname}.gschema.xml
+%{_datadir}/mime/packages/%{appname}.xml
+%{_datadir}/applications/*.desktop
+%{_datadir}/metainfo/*.metainfo.xml
+%{_datadir}/gir-1.0/GstClapper-1.0.gir
+%{_datadir}/locale/*/LC_MESSAGES/%{appname}.mo
+%{_libdir}/%{appname}/
+
+%changelog
+* Thu Feb 17 2022 Rafostar <rafostar.github@gmail.com> - 0.4.1-2
+- Require libsoup3
+
+* Mon Dec 20 2021 Rafostar <rafostar.github@gmail.com> - 0.4.1-1
+- New version
+
+* Sun Sep 12 2021 Rafostar <rafostar.github@gmail.com> - 0.4.0-1
+- New version
+
+* Thu Aug 26 2021 Rafostar <rafostar.github@gmail.com> - 0.3.0-4
+- Install translations
+
+* Thu Aug 26 2021 Rafostar <rafostar.github@gmail.com> - 0.3.0-3
+- Install clapper symlink
+
+* Mon Aug 23 2021 Rafostar <rafostar.github@gmail.com> - 0.3.0-2
+- Require libadwaita
+
+* Fri Jun 18 2021 Rafostar <rafostar.github@gmail.com> - 0.3.0-1
+- New version
+
+* Mon Apr 19 2021 Rafostar <rafostar.github@gmail.com> - 0.2.1-1
+- New version
+
+* Tue Apr 13 2021 Rafostar <rafostar.github@gmail.com> - 0.2.0-1
+- New version
+
+* Fri Feb 26 2021 Rafostar <rafostar.github@gmail.com> - 0.1.0-1
+- New version
+
+* Sun Feb 7 2021 Rafostar <rafostar.github@gmail.com> - 0.0.0-10
+- Install gstclapper libs to app named subdirectory
+
+* Fri Feb 5 2021 Rafostar <rafostar.github@gmail.com> - 0.0.0-9
+- Update build with gstclapper libs support
+
+* Thu Jan 21 2021 Rafostar <rafostar.github@gmail.com> - 0.0.0-8
+- Use metainfo instead of deprecated appdata
+
+* Mon Jan 18 2021 Rafostar <rafostar.github@gmail.com> - 0.0.0-7
+- Remove gjs-1.0 files
+
+* Sun Dec 20 2020 Rafostar <rafostar.github@gmail.com> - 0.0.0-6
+- Include additional app binaries
+
+* Sat Oct 31 2020 Rafostar <rafostar.github@gmail.com> - 0.0.0-5
+- Added metainfo
+
+* Sun Oct 25 2020 Rafostar <rafostar.github@gmail.com> - 0.0.0-4
+- Added gschema
+
+* Wed Oct 14 2020 Rafostar <rafostar.github@gmail.com> - 0.0.0-3
+- Update to GTK4
+
+* Sat Sep 19 22:02:00 CEST 2020 sp1rit - 0.0.0-2
+- Added suse_update_desktop_file macro for SuSE packages
+
+* Fri Sep 18 2020 Rafostar <rafostar.github@gmail.com> - 0.0.0-1
+- Initial package

po/LINGUAS

@@ -0,0 +1 @@
+ca cs de es fr hu it nl pl pt pt_BR ru sv zh_CN

po/POTFILES

@@ -0,0 +1,10 @@
+ui/clapper.ui
+ui/elapsed-time-button.ui
+ui/help-overlay.ui
+ui/preferences-plugin-ranking-subpage.ui
+ui/preferences-window.ui
+
+src/buttons.js
+src/dialogs.js
+src/revealers.js
+src/widget.js

po/af.po

@@ -0,0 +1,459 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: clapper\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2021-09-14 16:35+0200\n"
+"PO-Revision-Date: 2021-09-14 15:25\n"
+"Last-Translator: \n"
+"Language-Team: Afrikaans\n"
+"Language: af_ZA\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"X-Crowdin-Project: clapper\n"
+"X-Crowdin-Project-ID: 473374\n"
+"X-Crowdin-Language: af\n"
+"X-Crowdin-File: /master/po/com.github.rafostar.Clapper.pot\n"
+"X-Crowdin-File-ID: 31\n"
+
+#: ui/clapper.ui:6
+msgid "Open Files…"
+msgstr ""
+
+#: ui/clapper.ui:10
+msgid "Open URI…"
+msgstr ""
+
+#: ui/clapper.ui:16 ui/preferences-window.ui:4
+msgid "Preferences"
+msgstr ""
+
+#: ui/clapper.ui:20
+msgid "Shortcuts"
+msgstr ""
+
+#: ui/clapper.ui:26
+msgid "About Clapper"
+msgstr ""
+
+#: ui/elapsed-time-button.ui:27
+msgid "Speed"
+msgstr ""
+
+#: ui/elapsed-time-button.ui:41 ui/preferences-window.ui:83
+#: ui/preferences-window.ui:215
+msgid "Normal"
+msgstr ""
+
+#: ui/help-overlay.ui:10 ui/preferences-window.ui:12
+msgid "General"
+msgstr ""
+
+#: ui/help-overlay.ui:13
+msgid "Show shortcuts"
+msgstr ""
+
+#: ui/help-overlay.ui:19
+msgid "Toggle fullscreen"
+msgstr ""
+
+#: ui/help-overlay.ui:20
+msgid "Double tap | Double click"
+msgstr ""
+
+#: ui/help-overlay.ui:26
+msgid "Leave fullscreen"
+msgstr ""
+
+#: ui/help-overlay.ui:32
+msgid "Reveal OSD (fullscreen only)"
+msgstr ""
+
+#: ui/help-overlay.ui:33
+msgid "Tap"
+msgstr ""
+
+#: ui/help-overlay.ui:39
+msgid "Quit"
+msgstr ""
+
+#: ui/help-overlay.ui:47
+msgid "Media"
+msgstr ""
+
+#: ui/help-overlay.ui:50
+msgid "Open files"
+msgstr ""
+
+#: ui/help-overlay.ui:56 src/dialogs.js:137
+msgid "Open URI"
+msgstr ""
+
+#: ui/help-overlay.ui:64
+msgid "Playlist"
+msgstr ""
+
+#: ui/help-overlay.ui:67
+msgid "Next item"
+msgstr ""
+
+#: ui/help-overlay.ui:68
+msgid "Double tap (right side)"
+msgstr ""
+
+#: ui/help-overlay.ui:74
+msgid "Previous item"
+msgstr ""
+
+#: ui/help-overlay.ui:75
+msgid "Double tap (left side)"
+msgstr ""
+
+#: ui/help-overlay.ui:81
+msgid "Change repeat mode"
+msgstr ""
+
+#: ui/help-overlay.ui:87
+msgid "Export to file"
+msgstr ""
+
+#: ui/help-overlay.ui:95 ui/preferences-window.ui:119
+msgid "Playback"
+msgstr ""
+
+#: ui/help-overlay.ui:98
+msgid "Toggle play"
+msgstr ""
+
+#: ui/help-overlay.ui:99
+msgid "Long press | Right click"
+msgstr ""
+
+#: ui/help-overlay.ui:105
+msgid "Seek forward"
+msgstr ""
+
+#: ui/help-overlay.ui:106
+msgid "Swipe right | Scroll right"
+msgstr ""
+
+#: ui/help-overlay.ui:112
+msgid "Seek backward"
+msgstr ""
+
+#: ui/help-overlay.ui:113
+msgid "Swipe left | Scroll left"
+msgstr ""
+
+#: ui/help-overlay.ui:119
+msgid "Volume up"
+msgstr ""
+
+#: ui/help-overlay.ui:120
+msgid "Swipe up | Scroll up"
+msgstr ""
+
+#: ui/help-overlay.ui:126
+msgid "Volume down"
+msgstr ""
+
+#: ui/help-overlay.ui:127
+msgid "Swipe down | Scroll down"
+msgstr ""
+
+#: ui/help-overlay.ui:133
+msgid "Toggle mute"
+msgstr ""
+
+#: ui/help-overlay.ui:139
+msgid "Next chapter"
+msgstr ""
+
+#: ui/help-overlay.ui:145
+msgid "Previous chapter"
+msgstr ""
+
+#: ui/preferences-plugin-ranking-subpage.ui:11
+msgid "Decoders"
+msgstr ""
+
+#: ui/preferences-plugin-ranking-subpage.ui:18
+msgid "Return to the preferences"
+msgstr ""
+
+#: ui/preferences-window.ui:16
+msgid "Behavior"
+msgstr ""
+
+#: ui/preferences-window.ui:19
+msgid "Auto fullscreen"
+msgstr ""
+
+#: ui/preferences-window.ui:20
+msgid "Enter fullscreen when playlist is replaced except floating mode"
+msgstr ""
+
+#: ui/preferences-window.ui:26
+msgid "Ask to resume recent media"
+msgstr ""
+
+#: ui/preferences-window.ui:32
+msgid "Float on all workspaces"
+msgstr ""
+
+#: ui/preferences-window.ui:33
+msgid "This option only works on GNOME"
+msgstr ""
+
+#: ui/preferences-window.ui:39
+msgid "After playback"
+msgstr ""
+
+#: ui/preferences-window.ui:44
+msgid "Do nothing"
+msgstr ""
+
+#: ui/preferences-window.ui:45
+msgid "Freeze last frame"
+msgstr ""
+
+#: ui/preferences-window.ui:46
+msgid "Close the app"
+msgstr ""
+
+#: ui/preferences-window.ui:56
+msgid "Volume"
+msgstr ""
+
+#: ui/preferences-window.ui:59
+msgid "Custom initial value"
+msgstr ""
+
+#: ui/preferences-window.ui:60
+msgid "Set custom volume at startup instead of restoring it"
+msgstr ""
+
+#: ui/preferences-window.ui:64
+msgid "Volume percentage"
+msgstr ""
+
+#: ui/preferences-window.ui:75
+msgid "Seeking"
+msgstr ""
+
+#: ui/preferences-window.ui:78
+msgid "Mode"
+msgstr ""
+
+#: ui/preferences-window.ui:84
+msgid "Accurate"
+msgstr ""
+
+#: ui/preferences-window.ui:85
+msgid "Fast"
+msgstr ""
+
+#: ui/preferences-window.ui:93
+msgid "Unit"
+msgstr ""
+
+#: ui/preferences-window.ui:98
+msgid "Second"
+msgstr ""
+
+#: ui/preferences-window.ui:99
+msgid "Minute"
+msgstr ""
+
+#: ui/preferences-window.ui:100
+msgid "Percentage"
+msgstr ""
+
+#: ui/preferences-window.ui:108
+msgid "Value"
+msgstr ""
+
+#: ui/preferences-window.ui:123
+msgid "Audio"
+msgstr ""
+
+#: ui/preferences-window.ui:126
+msgid "Offset in milliseconds"
+msgstr ""
+
+#: ui/preferences-window.ui:133
+msgid "Only native audio formats"
+msgstr ""
+
+#: ui/preferences-window.ui:141
+msgid "Subtitles"
+msgstr ""
+
+#: ui/preferences-window.ui:144
+msgid "Default font"
+msgstr ""
+
+#: ui/preferences-window.ui:154
+msgid "Network"
+msgstr ""
+
+#: ui/preferences-window.ui:158
+msgid "Client"
+msgstr ""
+
+#: ui/preferences-window.ui:161
+msgid "Progressive download buffering"
+msgstr ""
+
+#: ui/preferences-window.ui:169
+msgid "Server"
+msgstr ""
+
+#: ui/preferences-window.ui:172
+msgid "Control player remotely"
+msgstr ""
+
+#: ui/preferences-window.ui:176
+msgid "Listening port"
+msgstr ""
+
+#: ui/preferences-window.ui:183
+msgid "Run web application in background"
+msgstr ""
+
+#: ui/preferences-window.ui:184
+msgid "Requires GTK compiled with Broadway backend"
+msgstr ""
+
+#: ui/preferences-window.ui:190
+msgid "Web application port"
+msgstr ""
+
+#: ui/preferences-window.ui:204
+msgid "Prefer adaptive streaming"
+msgstr ""
+
+#: ui/preferences-window.ui:210
+msgid "Max quality"
+msgstr ""
+
+#: ui/preferences-window.ui:228
+msgid "Tweaks"
+msgstr ""
+
+#: ui/preferences-window.ui:232
+msgid "Appearance"
+msgstr ""
+
+#: ui/preferences-window.ui:235
+msgid "Dark theme"
+msgstr ""
+
+#: ui/preferences-window.ui:241
+msgid "Render window shadows"
+msgstr ""
+
+#: ui/preferences-window.ui:242
+msgid "Disable to increase performance when windowed"
+msgstr ""
+
+#: ui/preferences-window.ui:253
+msgid "Plugin ranking"
+msgstr ""
+
+#: ui/preferences-window.ui:254
+msgid "Alter default ranks of GStreamer plugins"
+msgstr ""
+
+#: ui/preferences-window.ui:259
+msgid "Use playbin3"
+msgstr ""
+
+#: ui/preferences-window.ui:260 ui/preferences-window.ui:269
+msgid "Requires player restart"
+msgstr ""
+
+#: ui/preferences-window.ui:262 ui/preferences-window.ui:271
+msgid "Experimental"
+msgstr ""
+
+#: ui/preferences-window.ui:268
+msgid "Use PipeWire for audio output"
+msgstr ""
+
+#: src/buttons.js:201
+#, javascript-format
+msgid "Decoder: %s"
+msgstr ""
+
+#: src/dialogs.js:152
+msgid "Enter or drop URI here"
+msgstr ""
+
+#: src/dialogs.js:157
+msgid "Cancel"
+msgstr ""
+
+#: src/dialogs.js:158
+msgid "Open"
+msgstr ""
+
+#: src/dialogs.js:226
+msgid "Title"
+msgstr ""
+
+#: src/dialogs.js:227
+msgid "Completed"
+msgstr ""
+
+#: src/dialogs.js:235
+msgid "Resume playback?"
+msgstr ""
+
+#: src/dialogs.js:289
+#, javascript-format
+msgid "GTK version: %s"
+msgstr ""
+
+#: src/dialogs.js:290
+#, javascript-format
+msgid "Adwaita version: %s"
+msgstr ""
+
+#: src/dialogs.js:291
+#, javascript-format
+msgid "GStreamer version: %s"
+msgstr ""
+
+#: src/dialogs.js:292
+#, javascript-format
+msgid "GJS version: %s"
+msgstr ""
+
+#: src/dialogs.js:300
+msgid "A GNOME media player powered by GStreamer"
+msgstr ""
+
+#. TRANSLATORS: Put your name(s) here for credits or leave untranslated
+#: src/dialogs.js:305
+msgid "translator-credits"
+msgstr ""
+
+#: src/revealers.js:170
+#, javascript-format
+msgid "Ends at: %s"
+msgstr ""
+
+#: src/widget.js:227 src/widget.js:236 src/widget.js:242 src/widget.js:248
+msgid "Undetermined"
+msgstr ""
+
+#: src/widget.js:243
+msgid "Channels"
+msgstr ""
+
+#: src/widget.js:261
+msgid "Disabled"
+msgstr ""
+

po/ar.po

@@ -0,0 +1,459 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: clapper\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2021-09-14 16:35+0200\n"
+"PO-Revision-Date: 2021-09-14 15:25\n"
+"Last-Translator: \n"
+"Language-Team: Arabic\n"
+"Language: ar_SA\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=6; plural=(n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 && n%100<=99 ? 4 : 5);\n"
+"X-Crowdin-Project: clapper\n"
+"X-Crowdin-Project-ID: 473374\n"
+"X-Crowdin-Language: ar\n"
+"X-Crowdin-File: /master/po/com.github.rafostar.Clapper.pot\n"
+"X-Crowdin-File-ID: 31\n"
+
+#: ui/clapper.ui:6
+msgid "Open Files…"
+msgstr ""
+
+#: ui/clapper.ui:10
+msgid "Open URI…"
+msgstr ""
+
+#: ui/clapper.ui:16 ui/preferences-window.ui:4
+msgid "Preferences"
+msgstr ""
+
+#: ui/clapper.ui:20
+msgid "Shortcuts"
+msgstr ""
+
+#: ui/clapper.ui:26
+msgid "About Clapper"
+msgstr ""
+
+#: ui/elapsed-time-button.ui:27
+msgid "Speed"
+msgstr ""
+
+#: ui/elapsed-time-button.ui:41 ui/preferences-window.ui:83
+#: ui/preferences-window.ui:215
+msgid "Normal"
+msgstr ""
+
+#: ui/help-overlay.ui:10 ui/preferences-window.ui:12
+msgid "General"
+msgstr ""
+
+#: ui/help-overlay.ui:13
+msgid "Show shortcuts"
+msgstr ""
+
+#: ui/help-overlay.ui:19
+msgid "Toggle fullscreen"
+msgstr ""
+
+#: ui/help-overlay.ui:20
+msgid "Double tap | Double click"
+msgstr ""
+
+#: ui/help-overlay.ui:26
+msgid "Leave fullscreen"
+msgstr ""
+
+#: ui/help-overlay.ui:32
+msgid "Reveal OSD (fullscreen only)"
+msgstr ""
+
+#: ui/help-overlay.ui:33
+msgid "Tap"
+msgstr ""
+
+#: ui/help-overlay.ui:39
+msgid "Quit"
+msgstr ""
+
+#: ui/help-overlay.ui:47
+msgid "Media"
+msgstr ""
+
+#: ui/help-overlay.ui:50
+msgid "Open files"
+msgstr ""
+
+#: ui/help-overlay.ui:56 src/dialogs.js:137
+msgid "Open URI"
+msgstr ""
+
+#: ui/help-overlay.ui:64
+msgid "Playlist"
+msgstr ""
+
+#: ui/help-overlay.ui:67
+msgid "Next item"
+msgstr ""
+
+#: ui/help-overlay.ui:68
+msgid "Double tap (right side)"
+msgstr ""
+
+#: ui/help-overlay.ui:74
+msgid "Previous item"
+msgstr ""
+
+#: ui/help-overlay.ui:75
+msgid "Double tap (left side)"
+msgstr ""
+
+#: ui/help-overlay.ui:81
+msgid "Change repeat mode"
+msgstr ""
+
+#: ui/help-overlay.ui:87
+msgid "Export to file"
+msgstr ""
+
+#: ui/help-overlay.ui:95 ui/preferences-window.ui:119
+msgid "Playback"
+msgstr ""
+
+#: ui/help-overlay.ui:98
+msgid "Toggle play"
+msgstr ""
+
+#: ui/help-overlay.ui:99
+msgid "Long press | Right click"
+msgstr ""
+
+#: ui/help-overlay.ui:105
+msgid "Seek forward"
+msgstr ""
+
+#: ui/help-overlay.ui:106
+msgid "Swipe right | Scroll right"
+msgstr ""
+
+#: ui/help-overlay.ui:112
+msgid "Seek backward"
+msgstr ""
+
+#: ui/help-overlay.ui:113
+msgid "Swipe left | Scroll left"
+msgstr ""
+
+#: ui/help-overlay.ui:119
+msgid "Volume up"
+msgstr ""
+
+#: ui/help-overlay.ui:120
+msgid "Swipe up | Scroll up"
+msgstr ""
+
+#: ui/help-overlay.ui:126
+msgid "Volume down"
+msgstr ""
+
+#: ui/help-overlay.ui:127
+msgid "Swipe down | Scroll down"
+msgstr ""
+
+#: ui/help-overlay.ui:133
+msgid "Toggle mute"
+msgstr ""
+
+#: ui/help-overlay.ui:139
+msgid "Next chapter"
+msgstr ""
+
+#: ui/help-overlay.ui:145
+msgid "Previous chapter"
+msgstr ""
+
+#: ui/preferences-plugin-ranking-subpage.ui:11
+msgid "Decoders"
+msgstr ""
+
+#: ui/preferences-plugin-ranking-subpage.ui:18
+msgid "Return to the preferences"
+msgstr ""
+
+#: ui/preferences-window.ui:16
+msgid "Behavior"
+msgstr ""
+
+#: ui/preferences-window.ui:19
+msgid "Auto fullscreen"
+msgstr ""
+
+#: ui/preferences-window.ui:20
+msgid "Enter fullscreen when playlist is replaced except floating mode"
+msgstr ""
+
+#: ui/preferences-window.ui:26
+msgid "Ask to resume recent media"
+msgstr ""
+
+#: ui/preferences-window.ui:32
+msgid "Float on all workspaces"
+msgstr ""
+
+#: ui/preferences-window.ui:33
+msgid "This option only works on GNOME"
+msgstr ""
+
+#: ui/preferences-window.ui:39
+msgid "After playback"
+msgstr ""
+
+#: ui/preferences-window.ui:44
+msgid "Do nothing"
+msgstr ""
+
+#: ui/preferences-window.ui:45
+msgid "Freeze last frame"
+msgstr ""
+
+#: ui/preferences-window.ui:46
+msgid "Close the app"
+msgstr ""
+
+#: ui/preferences-window.ui:56
+msgid "Volume"
+msgstr ""
+
+#: ui/preferences-window.ui:59
+msgid "Custom initial value"
+msgstr ""
+
+#: ui/preferences-window.ui:60
+msgid "Set custom volume at startup instead of restoring it"
+msgstr ""
+
+#: ui/preferences-window.ui:64
+msgid "Volume percentage"
+msgstr ""
+
+#: ui/preferences-window.ui:75
+msgid "Seeking"
+msgstr ""
+
+#: ui/preferences-window.ui:78
+msgid "Mode"
+msgstr ""
+
+#: ui/preferences-window.ui:84
+msgid "Accurate"
+msgstr ""
+
+#: ui/preferences-window.ui:85
+msgid "Fast"
+msgstr ""
+
+#: ui/preferences-window.ui:93
+msgid "Unit"
+msgstr ""
+
+#: ui/preferences-window.ui:98
+msgid "Second"
+msgstr ""
+
+#: ui/preferences-window.ui:99
+msgid "Minute"
+msgstr ""
+
+#: ui/preferences-window.ui:100
+msgid "Percentage"
+msgstr ""
+
+#: ui/preferences-window.ui:108
+msgid "Value"
+msgstr ""
+
+#: ui/preferences-window.ui:123
+msgid "Audio"
+msgstr ""
+
+#: ui/preferences-window.ui:126
+msgid "Offset in milliseconds"
+msgstr ""
+
+#: ui/preferences-window.ui:133
+msgid "Only native audio formats"
+msgstr ""
+
+#: ui/preferences-window.ui:141
+msgid "Subtitles"
+msgstr ""
+
+#: ui/preferences-window.ui:144
+msgid "Default font"
+msgstr ""
+
+#: ui/preferences-window.ui:154
+msgid "Network"
+msgstr ""
+
+#: ui/preferences-window.ui:158
+msgid "Client"
+msgstr ""
+
+#: ui/preferences-window.ui:161
+msgid "Progressive download buffering"
+msgstr ""
+
+#: ui/preferences-window.ui:169
+msgid "Server"
+msgstr ""
+
+#: ui/preferences-window.ui:172
+msgid "Control player remotely"
+msgstr ""
+
+#: ui/preferences-window.ui:176
+msgid "Listening port"
+msgstr ""
+
+#: ui/preferences-window.ui:183
+msgid "Run web application in background"
+msgstr ""
+
+#: ui/preferences-window.ui:184
+msgid "Requires GTK compiled with Broadway backend"
+msgstr ""
+
+#: ui/preferences-window.ui:190
+msgid "Web application port"
+msgstr ""
+
+#: ui/preferences-window.ui:204
+msgid "Prefer adaptive streaming"
+msgstr ""
+
+#: ui/preferences-window.ui:210
+msgid "Max quality"
+msgstr ""
+
+#: ui/preferences-window.ui:228
+msgid "Tweaks"
+msgstr ""
+
+#: ui/preferences-window.ui:232
+msgid "Appearance"
+msgstr ""
+
+#: ui/preferences-window.ui:235
+msgid "Dark theme"
+msgstr ""
+
+#: ui/preferences-window.ui:241
+msgid "Render window shadows"
+msgstr ""
+
+#: ui/preferences-window.ui:242
+msgid "Disable to increase performance when windowed"
+msgstr ""
+
+#: ui/preferences-window.ui:253
+msgid "Plugin ranking"
+msgstr ""
+
+#: ui/preferences-window.ui:254
+msgid "Alter default ranks of GStreamer plugins"
+msgstr ""
+
+#: ui/preferences-window.ui:259
+msgid "Use playbin3"
+msgstr ""
+
+#: ui/preferences-window.ui:260 ui/preferences-window.ui:269
+msgid "Requires player restart"
+msgstr ""
+
+#: ui/preferences-window.ui:262 ui/preferences-window.ui:271
+msgid "Experimental"
+msgstr ""
+
+#: ui/preferences-window.ui:268
+msgid "Use PipeWire for audio output"
+msgstr ""
+
+#: src/buttons.js:201
+#, javascript-format
+msgid "Decoder: %s"
+msgstr ""
+
+#: src/dialogs.js:152
+msgid "Enter or drop URI here"
+msgstr ""
+
+#: src/dialogs.js:157
+msgid "Cancel"
+msgstr ""
+
+#: src/dialogs.js:158
+msgid "Open"
+msgstr ""
+
+#: src/dialogs.js:226
+msgid "Title"
+msgstr ""
+
+#: src/dialogs.js:227
+msgid "Completed"
+msgstr ""
+
+#: src/dialogs.js:235
+msgid "Resume playback?"
+msgstr ""
+
+#: src/dialogs.js:289
+#, javascript-format
+msgid "GTK version: %s"
+msgstr ""
+
+#: src/dialogs.js:290
+#, javascript-format
+msgid "Adwaita version: %s"
+msgstr ""
+
+#: src/dialogs.js:291
+#, javascript-format
+msgid "GStreamer version: %s"
+msgstr ""
+
+#: src/dialogs.js:292
+#, javascript-format
+msgid "GJS version: %s"
+msgstr ""
+
+#: src/dialogs.js:300
+msgid "A GNOME media player powered by GStreamer"
+msgstr ""
+
+#. TRANSLATORS: Put your name(s) here for credits or leave untranslated
+#: src/dialogs.js:305
+msgid "translator-credits"
+msgstr ""
+
+#: src/revealers.js:170
+#, javascript-format
+msgid "Ends at: %s"
+msgstr ""
+
+#: src/widget.js:227 src/widget.js:236 src/widget.js:242 src/widget.js:248
+msgid "Undetermined"
+msgstr ""
+
+#: src/widget.js:243
+msgid "Channels"
+msgstr ""
+
+#: src/widget.js:261
+msgid "Disabled"
+msgstr ""
+