[rygel] examples: Fix full-screen renderer for wayland

[Jens Georg <jensgeorg src gnome org>]

commit d1b0b607e96eac1642341477a9b73cd734e34bbc
Author: Jens Georg <mail jensge org>
Date:   Mon Apr 17 12:38:45 2017 +0200

    examples: Fix full-screen renderer for wayland
    
    Signed-off-by: Jens Georg <mail jensge org>

 examples/fullscreen-renderer.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/examples/fullscreen-renderer.c b/examples/fullscreen-renderer.c
index 0990838..e27e35a 100644
--- a/examples/fullscreen-renderer.c
+++ b/examples/fullscreen-renderer.c
@@ -38,6 +38,7 @@
 
 #include <gst/video/videooverlay.h>
 #include <gdk/gdkx.h>
+#include <gdk/gdkwayland.h>
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
@@ -66,7 +67,14 @@ static void on_realize (GtkWidget *widget, gpointer user_data)
     if (!gdk_window_ensure_native (window))
         g_error ("Could not create native window for overlay");
 
-    window_handle = GDK_WINDOW_XID (window);
+    if (GDK_IS_WAYLAND_WINDOW (window)) {
+        window_handle = gdk_wayland_window_get_wl_surface (window);
+    } else if (GDK_IS_X11_WINDOW (window)) {
+        window_handle = GDK_WINDOW_XID (window);
+    } else {
+        g_error ("Unsupported windowing system");
+    }
+
     gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (data->playbin),
                                          window_handle);
 }