gst-plugins-rs/video/gtk4/examples/gtksink.py

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import gi
import sys
gi.require_version("Gtk", "4.0")
gi.require_version('Gst', '1.0')
from gi.repository import Gtk
from gi.repository import Gst
Gst.init(sys.argv[1:])
gtksink = Gst.ElementFactory.make("gtk4paintablesink", "sink")
# Get the paintable from the sink
paintable = gtksink.props.paintable
# Use GL if available
if paintable.props.gl_context:
print("Using GL")
source = Gst.ElementFactory.make("gltestsrc", "source")
glsink = Gst.ElementFactory.make("glsinkbin", "sink")
glsink.props.sink = gtksink
sink = glsink
else:
source = Gst.ElementFactory.make("videotestsrc", "source")
sink = gtksink
pipeline = Gst.Pipeline.new()
if not pipeline or not source or not sink:
print("Not all elements could be created.")
exit(-1)
pipeline.add(source)
pipeline.add(sink)
source.link(sink)
def on_activate(app):
win = Gtk.ApplicationWindow(application=app)
box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
picture = Gtk.Picture.new()
picture.set_size_request(640, 480)
# Set the paintable on the picture
picture.set_paintable(paintable)
box.append(picture)
btn = Gtk.Button(label="▶/⏸")
box.append(btn)
btn.connect('clicked', lambda _: pipeline.set_state(Gst.State.PAUSED) if pipeline.get_state(1)[1]==Gst.State.PLAYING else pipeline.set_state(Gst.State.PLAYING))
win.set_child(box)
win.present()
app = Gtk.Application()
app.connect('activate', on_activate)
app.run(None)