It is time.

ui/ozone/platform/dri/crtc_controller.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef UI_OZONE_PLATFORM_DRI_CRTC_CONTROLLER_H_
-#define UI_OZONE_PLATFORM_DRI_CRTC_CONTROLLER_H_
-
-#include <stddef.h>
-#include <stdint.h>
-#include <xf86drmMode.h>
-
-#include "ui/ozone/platform/dri/overlay_plane.h"
-#include "ui/ozone/platform/dri/scoped_drm_types.h"
-
-namespace ui {
-
-class DriWrapper;
-
-// Wrapper around a CRTC.
-//
-// One CRTC can be paired up with one or more connectors. The simplest
-// configuration represents one CRTC driving one monitor, while pairing up a
-// CRTC with multiple connectors results in hardware mirroring.
-class CrtcController {
- public:
-  CrtcController(DriWrapper* drm, uint32_t crtc, uint32_t connector);
-  ~CrtcController();
-
-  uint32_t crtc() const { return crtc_; }
-  uint32_t connector() const { return connector_; }
-  DriWrapper* drm() const { return drm_; }
-  bool is_disabled() const { return is_disabled_; }
-  bool page_flip_pending() const { return page_flip_pending_; }
-  uint64_t time_of_last_flip() const { return time_of_last_flip_; }
-
-  // Perform the initial modesetting operation using |plane| as the buffer for
-  // the primary plane. The CRTC configuration is specified by |mode|.
-  bool Modeset(const OverlayPlane& plane, drmModeModeInfo mode);
-
-  // Disables the controller.
-  bool Disable();
-
-  // Schedule a page flip event and present the overlays in |planes|.
-  bool SchedulePageFlip(const OverlayPlaneList& planes);
-
-  // Called when the page flip event occurred. The event is provided by the
-  // kernel when a VBlank event finished. This allows the controller to
-  // update internal state and propagate the update to the surface.
-  // The tuple (seconds, useconds) represents the event timestamp. |seconds|
-  // represents the number of seconds while |useconds| represents the
-  // microseconds (< 1 second) in the timestamp.
-  void OnPageFlipEvent(unsigned int frame,
-                       unsigned int seconds,
-                       unsigned int useconds);
-
-  bool SetCursor(const scoped_refptr<ScanoutBuffer>& buffer);
-  bool UnsetCursor();
-  bool MoveCursor(const gfx::Point& location);
-
- private:
-  DriWrapper* drm_;  // Not owned.
-
-  // Buffers need to be declared first so that they are destroyed last. Needed
-  // since the controllers may reference the buffers.
-  OverlayPlaneList current_planes_;
-  OverlayPlaneList pending_planes_;
-  scoped_refptr<ScanoutBuffer> cursor_buffer_;
-
-  uint32_t crtc_;
-
-  // TODO(dnicoara) Add support for hardware mirroring (multiple connectors).
-  uint32_t connector_;
-
-  drmModeModeInfo mode_;
-
-  // Store the state of the CRTC before we took over. Used to restore the CRTC
-  // once we no longer need it.
-  ScopedDrmCrtcPtr saved_crtc_;
-
-  // Keeps track of the CRTC state. If a surface has been bound, then the value
-  // is set to false. Otherwise it is true.
-  bool is_disabled_;
-
-  // True if a successful SchedulePageFlip occurred. Reset to false by a modeset
-  // operation or when the OnPageFlipEvent callback is triggered.
-  bool page_flip_pending_;
-
-  // The time of the last page flip event as reported by the kernel callback.
-  uint64_t time_of_last_flip_;
-
-  DISALLOW_COPY_AND_ASSIGN(CrtcController);
-};
-
-}  // namespace ui
-
-#endif  // UI_OZONE_PLATFORM_DRI_CRTC_CONTROLLER_H_