After some more debugging, here are two videos proving that #gtk4 / #GStreamer video playback with fullscreen GL/VK overlay works on a #RaspberryPi4 and #PinebookPro / #rk3399 on #weston / #Wayland, each maxing out their video decoders with 1080p@60 and 4k@60 respectively.
The message here is: no matter what hardware - if you want to make a video/camera app that needs to be highly efficient, you can do it with a proper, yet still lightweight toolkit now. No need for a custom kms/drm backend.
The obvious use-case would be video player, multimedia centers and video-chat software.
But there's more: let's say you want to build a FLOSS drone operator software that runs on a dedicated tablet - but can also be used on any laptop, just on the desktop? Some camera software that displays extra info like the temperature over the video? You'll probably want to use #GStreamer / #PipeWire anyway - #gtk4 can now be a pretty decent frontend, on some embedded device just like on the desktop :)
Relevant unmerged work: - https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/6618 - https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/1443 - https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5727 Only for V4L2 devices: - https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890
Robert Mader
FULL-FIFO DEVELOPER 🇺🇦🇨🇿