Hyunjun Ko authored Nov 08, 2017 and Víctor Manuel Jáquez Leal committed Feb 21, 2019

wl_display can be set from application.

It is not fatal when wl_display doesn't support shell/output interface,
since shell_surface and opaque_region are not necessary for external
wayland surfaces.

Also, use wl_subcompositor and wl_subsurface.
See Appendix A. Wayland Protocol Specification as the following.

"""
The aim of sub-surfaces is to offload some of the compositing work
within a window from clients to the compositor. A prime example is
a video player with decorations and video in separate wl_surface
objects.

This should allow the compositor to pass YUV video buffer processing to
dedicated overlay hardware when possible.
"""

Added new method gst_vaapi_window_wayland_new_with_surface()

Original-Patch-By: Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
                   Zhao Halley <halley.zhao@intel.com>
                   changzhix.wei@intel.com

https://bugzilla.gnome.org/show_bug.cgi?id=705821