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// 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_DRM_GPU_SCREEN_MANAGER_H_
#define UI_OZONE_PLATFORM_DRM_GPU_SCREEN_MANAGER_H_
#include "base/macros.h"
#include "base/memory/scoped_vector.h"
#include "base/observer_list.h"
#include "ui/ozone/ozone_export.h"
#include "ui/ozone/platform/drm/gpu/display_change_observer.h"
#include "ui/ozone/platform/drm/gpu/hardware_display_controller.h"
typedef struct _drmModeModeInfo drmModeModeInfo;
namespace gfx {
class Point;
class Rect;
class Size;
} // namespace gfx
namespace ui {
class DrmDevice;
class ScanoutBufferGenerator;
// Responsible for keeping track of active displays and configuring them.
class OZONE_EXPORT ScreenManager {
public:
ScreenManager(ScanoutBufferGenerator* surface_generator);
virtual ~ScreenManager();
// Register a display controller. This must be called before trying to
// configure it.
void AddDisplayController(const scoped_refptr<DrmDevice>& drm,
uint32_t crtc,
uint32_t connector);
// Remove a display controller from the list of active controllers. The
// controller is removed since it was disconnected.
void RemoveDisplayController(const scoped_refptr<DrmDevice>& drm,
uint32_t crtc);
// Configure a display controller. The display controller is identified by
// (|crtc|, |connector|) and the controller is modeset using |mode|.
bool ConfigureDisplayController(const scoped_refptr<DrmDevice>& drm,
uint32_t crtc,
uint32_t connector,
const gfx::Point& origin,
const drmModeModeInfo& mode);
// Disable the display controller identified by |crtc|. Note, the controller
// may still be connected, so this does not remove the controller.
bool DisableDisplayController(const scoped_refptr<DrmDevice>& drm,
uint32_t crtc);
// Returns a reference to the display controller configured to display within
// |bounds|. If the caller caches the controller it must also register as an
// observer to be notified when the controller goes out of scope.
HardwareDisplayController* GetDisplayController(const gfx::Rect& bounds);
void AddObserver(DisplayChangeObserver* observer);
void RemoveObserver(DisplayChangeObserver* observer);
private:
typedef ScopedVector<HardwareDisplayController> HardwareDisplayControllers;
// Returns an iterator into |controllers_| for the controller identified by
// (|crtc|, |connector|).
HardwareDisplayControllers::iterator FindDisplayController(
const scoped_refptr<DrmDevice>& drm,
uint32_t crtc);
// Returns an iterator into |controllers_| for the controller located at
// |origin|.
HardwareDisplayControllers::iterator FindActiveDisplayControllerByLocation(
const gfx::Rect& bounds);
// Perform modesetting in |controller| using |origin| and |mode|.
bool ModesetDisplayController(HardwareDisplayController* controller,
const gfx::Point& origin,
const drmModeModeInfo& mode);
// Tries to set the controller identified by (|crtc|, |connector|) to mirror
// those in |mirror|. |original| is an iterator to the HDC where the
// controller is currently present.
bool HandleMirrorMode(HardwareDisplayControllers::iterator original,
HardwareDisplayControllers::iterator mirror,
const scoped_refptr<DrmDevice>& drm,
uint32_t crtc,
uint32_t connector);
ScanoutBufferGenerator* buffer_generator_; // Not owned.
// List of display controllers (active and disabled).
HardwareDisplayControllers controllers_;
ObserverList<DisplayChangeObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(ScreenManager);
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_DRM_GPU_SCREEN_MANAGER_H_
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