waylandsink: support fullscreen

Add the fullscreen property that makes the sink displayed all across
the output.

https://bugzilla.gnome.org/show_bug.cgi?id=688190

ext/wayland/gstwaylandsink.c

@@ -61,7 +61,8 @@ enum
 enum
 {
   PROP_0,
-  PROP_DISPLAY
+  PROP_DISPLAY,
+  PROP_FULLSCREEN
 };
 
 GST_DEBUG_CATEGORY (gstwayland_debug);
@@ -202,6 +203,11 @@ gst_wayland_sink_class_init (GstWaylandSinkClass * klass)
       g_param_spec_string ("display", "Wayland Display name", "Wayland "
           "display name to connect to, if not supplied via the GstContext",
           NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (gobject_class, PROP_FULLSCREEN,
+      g_param_spec_boolean ("fullscreen", "Fullscreen",
+          "Whether the surface should be made fullscreen ", FALSE,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 }
 
 static void
@@ -211,6 +217,18 @@ gst_wayland_sink_init (GstWaylandSink * sink)
   g_mutex_init (&sink->render_lock);
 }
 
+static void
+gst_wayland_sink_set_fullscreen (GstWaylandSink * sink, gboolean fullscreen)
+{
+  if (fullscreen == sink->fullscreen)
+    return;
+
+  g_mutex_lock (&sink->render_lock);
+  sink->fullscreen = fullscreen;
+  gst_wl_window_ensure_fullscreen (sink->window, fullscreen);
+  g_mutex_unlock (&sink->render_lock);
+}
+
 static void
 gst_wayland_sink_get_property (GObject * object,
     guint prop_id, GValue * value, GParamSpec * pspec)
@@ -223,6 +241,11 @@ gst_wayland_sink_get_property (GObject * object,
       g_value_set_string (value, sink->display_name);
       GST_OBJECT_UNLOCK (sink);
       break;
+    case PROP_FULLSCREEN:
+      GST_OBJECT_LOCK (sink);
+      g_value_set_boolean (value, sink->fullscreen);
+      GST_OBJECT_UNLOCK (sink);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -241,6 +264,11 @@ gst_wayland_sink_set_property (GObject * object,
       sink->display_name = g_value_dup_string (value);
       GST_OBJECT_UNLOCK (sink);
       break;
+    case PROP_FULLSCREEN:
+      GST_OBJECT_LOCK (sink);
+      gst_wayland_sink_set_fullscreen (sink, g_value_get_boolean (value));
+      GST_OBJECT_UNLOCK (sink);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -659,7 +687,7 @@ gst_wayland_sink_show_frame (GstVideoSink * vsink, GstBuffer * buffer)
     if (!sink->window) {
       /* if we were not provided a window, create one ourselves */
       sink->window = gst_wl_window_new_toplevel (sink->display,
-          &sink->video_info, &sink->render_lock);
+          &sink->video_info, sink->fullscreen, &sink->render_lock);
     }
   }
 

ext/wayland/gstwaylandsink.h

@@ -60,6 +60,7 @@ struct _GstWaylandSink
 
   gboolean video_info_changed;
   GstVideoInfo video_info;
+  gboolean fullscreen;
 
   gchar *display_name;
 

ext/wayland/wlwindow.c

@@ -150,9 +150,22 @@ gst_wl_window_new_internal (GstWlDisplay * display, GMutex * render_lock)
   return window;
 }
 
+void
+gst_wl_window_ensure_fullscreen (GstWlWindow * window, gboolean fullscreen)
+{
+  if (!window)
+    return;
+
+  if (fullscreen)
+    wl_shell_surface_set_fullscreen (window->shell_surface,
+        WL_SHELL_SURFACE_FULLSCREEN_METHOD_SCALE, 0, NULL);
+  else
+    wl_shell_surface_set_toplevel (window->shell_surface);
+}
+
 GstWlWindow *
 gst_wl_window_new_toplevel (GstWlDisplay * display, const GstVideoInfo * info,
-    GMutex * render_lock)
+    gboolean fullscreen, GMutex * render_lock)
 {
   GstWlWindow *window;
   gint width;
@@ -166,7 +179,7 @@ gst_wl_window_new_toplevel (GstWlDisplay * display, const GstVideoInfo * info,
   if (window->shell_surface) {
     wl_shell_surface_add_listener (window->shell_surface,
         &shell_surface_listener, window);
-    wl_shell_surface_set_toplevel (window->shell_surface);
+    gst_wl_window_ensure_fullscreen (window, fullscreen);
   } else {
     GST_ERROR ("Unable to get wl_shell_surface");
 

ext/wayland/wlwindow.h

@@ -74,8 +74,10 @@ struct _GstWlWindowClass
 
 GType gst_wl_window_get_type (void);
 
+void gst_wl_window_ensure_fullscreen (GstWlWindow * window,
+        gboolean fullscreen);
 GstWlWindow *gst_wl_window_new_toplevel (GstWlDisplay * display,
-        const GstVideoInfo * info, GMutex * render_lock);
+        const GstVideoInfo * info, gboolean fullscreen, GMutex * render_lock);
 GstWlWindow *gst_wl_window_new_in_surface (GstWlDisplay * display,
         struct wl_surface * parent, GMutex * render_lock);