void realize ( GtkMediaStream* self, GdkSurface* surface )
Called by users to attach the media stream to a
GdkSurface they manage.
The stream can then access the resources of
surface for its
rendering purposes. In particular, media streams might want to
GdkGLContext or sync to the
Whoever calls this function is responsible for calling
gtk_media_stream_unrealize() before either the stream
surface get destroyed.
Multiple calls to this function may happen from different
users of the video, even with the same
surface. Each of these
calls must be followed by its own call to
It is not required to call this function to make a media stream work.
The data is owned by the caller of the function.