1 files changed, 17 insertions, 0 deletions
diff --git a/ui/ozone/platform/drm/gpu/drm_window.h b/ui/ozone/platform/drm/gpu/drm_window.h
index f655bbb..74e1e53 100644
--- a/ui/ozone/platform/drm/gpu/drm_window.h
+++ b/ui/ozone/platform/drm/gpu/drm_window.h
@@ -12,6 +12,7 @@
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/ozone/ozone_export.h"
+#include "ui/ozone/platform/drm/gpu/overlay_plane.h"
 
 class SkBitmap;
 
@@ -73,6 +74,16 @@ class OZONE_EXPORT DrmWindow {
   // Move the HW cursor to the specified location.
   void MoveCursor(const gfx::Point& location);
 
+  // Queue overlay planes and page flips.
+  // If hardware display controller is available, forward the information
+  // immediately, otherwise queue up on the window and forward when the hardware
+  // is once again ready.
+  void QueueOverlayPlane(const OverlayPlane& plane);
+  bool SchedulePageFlip(bool is_sync, const base::Closure& callback);
+
+  // Returns the last buffer associated with this window.
+  const OverlayPlane* GetLastModesetBuffer();
+
  private:
   // Draw the last set cursor & update the cursor plane.
   void ResetCursor(bool bitmap_only);
@@ -106,6 +117,12 @@ class OZONE_EXPORT DrmWindow {
   int cursor_frame_;
   int cursor_frame_delay_ms_;
 
+  // Planes and flips currently being queued in the absence of hardware display
+  // controller.
+  OverlayPlaneList pending_planes_;
+  OverlayPlaneList last_submitted_planes_;
+  bool last_swap_sync_;
+
   DISALLOW_COPY_AND_ASSIGN(DrmWindow);
 };