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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_CRTC_CONTROLLER_H_
#define UI_OZONE_PLATFORM_DRM_GPU_CRTC_CONTROLLER_H_
#include <stddef.h>
#include <stdint.h>
#include <xf86drmMode.h>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/time/time.h"
#include "ui/gfx/swap_result.h"
#include "ui/ozone/platform/drm/common/scoped_drm_types.h"
#include "ui/ozone/platform/drm/gpu/drm_overlay_plane.h"
#include "ui/ozone/platform/drm/gpu/hardware_display_plane_manager.h"
namespace ui {
class DrmDevice;
// 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(const scoped_refptr<DrmDevice>& drm,
uint32_t crtc,
uint32_t connector);
~CrtcController();
drmModeModeInfo mode() const { return mode_; }
uint32_t crtc() const { return crtc_; }
uint32_t connector() const { return connector_; }
const scoped_refptr<DrmDevice>& drm() const { return drm_; }
bool is_disabled() const { return is_disabled_; }
// Calls the appropriate Plane Manager to perform the initial modesetting
// operation using |plane| as the buffer for the primary plane. The CRTC
// configuration is specified by |mode|.
bool Modeset(const DrmOverlayPlane& plane,
const drmModeModeInfo& mode,
const ui::HardwareDisplayPlaneList& plane_list);
// Disables the controller.
bool Disable();
bool AssignOverlayPlanes(HardwareDisplayPlaneList* plane_list,
const DrmOverlayPlaneList& planes);
// Returns a vector of format modifiers for the given fourcc format
// on this CRTCs primary plane. A format modifier describes the
// actual layout of the buffer, such as whether it's linear, tiled
// one way or another or maybe compressed. Except for generic
// modifiers such as DRM_FORMAT_MOD_NONE (linear), the modifier
// values are 64 bit values that we don't understand at this
// level. We pass the modifers to gbm_bo_create_with_modifiers() and
// gbm will pick a modifier as it allocates the bo.
std::vector<uint64_t> GetFormatModifiers(uint32_t fourcc_format);
void SetCursor(uint32_t handle, const gfx::Size& size);
void MoveCursor(const gfx::Point& location);
void OnPageFlipComplete();
private:
void DisableCursor();
const scoped_refptr<DrmDevice> drm_;
const uint32_t crtc_;
// TODO(dnicoara) Add support for hardware mirroring (multiple connectors).
const uint32_t connector_;
drmModeModeInfo mode_ = {};
scoped_refptr<DrmFramebuffer> modeset_framebuffer_;
// 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;
DISALLOW_COPY_AND_ASSIGN(CrtcController);
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_DRM_GPU_CRTC_CONTROLLER_H_
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