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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.
#include <stddef.h>
#include <stdint.h>
#include <xf86drmMode.h>
#include <vector>
#include "base/macros.h"
#include "ui/display/types/gamma_ramp_rgb_entry.h"
#include "ui/ozone/platform/drm/common/scoped_drm_types.h"
#include "ui/ozone/platform/drm/gpu/drm_device.h"
#include "ui/ozone/platform/drm/gpu/drm_overlay_plane.h"
#include "ui/ozone/public/swap_completion_callback.h"
namespace gfx {
class GpuFence;
class Rect;
} // namespace gfx
namespace ui {
class CrtcController;
class HardwareDisplayPlane;
// This contains the list of planes controlled by one HDC on a given DRM fd.
// It is owned by the HDC and filled by the CrtcController.
struct HardwareDisplayPlaneList {
// This is the list of planes to be committed this time.
std::vector<HardwareDisplayPlane*> plane_list;
// This is the list of planes that was committed last time.
std::vector<HardwareDisplayPlane*> old_plane_list;
struct PageFlipInfo {
PageFlipInfo(uint32_t crtc_id, uint32_t framebuffer, CrtcController* crtc);
PageFlipInfo(const PageFlipInfo& other);
uint32_t crtc_id;
uint32_t framebuffer;
CrtcController* crtc;
// In the case of non-atomic operation, this info will be used for
// pageflipping.
std::vector<PageFlipInfo> legacy_page_flips;
ScopedDrmAtomicReqPtr atomic_property_set;
class HardwareDisplayPlaneManager {
virtual ~HardwareDisplayPlaneManager();
// This parses information from the drm driver, adding any new planes
// or crtcs found.
bool Initialize(DrmDevice* drm);
// Clears old frame state out. Must be called before any AssignOverlayPlanes
// calls.
void BeginFrame(HardwareDisplayPlaneList* plane_list);
// Sets the color transform matrix (a 3x3 matrix represented in vector form)
// on the CRTC with ID |crtc_id|.
bool SetColorMatrix(uint32_t crtc_id, const std::vector<float>& color_matrix);
// Sets the degamma/gamma luts on the CRTC object with ID |crtc_id|.
bool SetGammaCorrection(
uint32_t crtc_id,
const std::vector<display::GammaRampRGBEntry>& degamma_lut,
const std::vector<display::GammaRampRGBEntry>& gamma_lut);
// Assign hardware planes from the |planes_| list to |overlay_list| entries,
// recording the plane IDs in the |plane_list|. Only planes compatible with
// |crtc_id| will be used. |overlay_list| must be sorted bottom-to-top.
virtual bool AssignOverlayPlanes(HardwareDisplayPlaneList* plane_list,
const DrmOverlayPlaneList& overlay_list,
uint32_t crtc_id,
CrtcController* crtc);
// Commit the plane states in |plane_list|.
// If |page_flip_request| is null, this tests the plane configuration without
// submitting it.
// The fence returned in |out_fence| will signal when the currently scanned
// out buffers are replaced, and not when the buffers are scheduled with
// |page_flip_request|. Note that the returned fence may be a nullptr
// if the system doesn't support out fences.
virtual bool Commit(HardwareDisplayPlaneList* plane_list,
scoped_refptr<PageFlipRequest> page_flip_request,
std::unique_ptr<gfx::GpuFence>* out_fence) = 0;
// Disable all the overlay planes previously submitted and now stored in
// plane_list->old_plane_list.
virtual bool DisableOverlayPlanes(HardwareDisplayPlaneList* plane_list) = 0;
// Set the drm_color_ctm contained in |ctm_blob_data| to all planes' KMS
// states
virtual bool SetColorCorrectionOnAllCrtcPlanes(
uint32_t crtc_id,
ScopedDrmColorCtmPtr ctm_blob_data) = 0;
// Check that the primary plane is valid for this
// PlaneManager. Specifically, legacy can't support primary planes
// that don't have the same size as the current mode of the crtc.
virtual bool ValidatePrimarySize(const DrmOverlayPlane& primary,
const drmModeModeInfo& mode) = 0;
const std::vector<std::unique_ptr<HardwareDisplayPlane>>& planes() {
return planes_;
// Request a callback to be called when the planes are ready to be displayed.
// The callback will be invoked in the caller's execution context (same
// sequence or thread).
virtual void RequestPlanesReadyCallback(
DrmOverlayPlaneList planes,
base::OnceCallback<void(DrmOverlayPlaneList planes)> callback) = 0;
// Returns all formats which can be scanned out by this PlaneManager.
const std::vector<uint32_t>& GetSupportedFormats() const;
std::vector<uint64_t> GetFormatModifiers(uint32_t crtc_id, uint32_t format);
struct CrtcProperties {
// Unique identifier for the CRTC. This must be greater than 0 to be valid.
uint32_t id;
// Optional properties.
DrmDevice::Property ctm;
DrmDevice::Property gamma_lut;
DrmDevice::Property gamma_lut_size;
DrmDevice::Property degamma_lut;
DrmDevice::Property degamma_lut_size;
DrmDevice::Property out_fence_ptr;
struct CrtcState {
CrtcProperties properties = {};
// Cached blobs for the properties since the CRTC properties are applied on
// the next page flip and we need to keep the properties valid until then.
ScopedDrmPropertyBlob ctm_blob;
ScopedDrmPropertyBlob gamma_lut_blob;
ScopedDrmPropertyBlob degamma_lut_blob;
bool InitializeCrtcState(DrmDevice* drm);
virtual bool InitializePlanes(DrmDevice* drm) = 0;
virtual bool SetPlaneData(HardwareDisplayPlaneList* plane_list,
HardwareDisplayPlane* hw_plane,
const DrmOverlayPlane& overlay,
uint32_t crtc_id,
const gfx::Rect& src_rect,
CrtcController* crtc) = 0;
virtual std::unique_ptr<HardwareDisplayPlane> CreatePlane(uint32_t plane_id);
// Finds the plane located at or after |*index| that is not in use and can
// be used with |crtc_index|.
HardwareDisplayPlane* FindNextUnusedPlane(
size_t* index,
uint32_t crtc_index,
const DrmOverlayPlane& overlay) const;
// Convert |crtc_id| into an index, returning -1 if the ID couldn't be found.
int LookupCrtcIndex(uint32_t crtc_id) const;
// Returns true if |plane| can support |overlay| and compatible with
// |crtc_index|.
virtual bool IsCompatible(HardwareDisplayPlane* plane,
const DrmOverlayPlane& overlay,
uint32_t crtc_index) const;
void ResetCurrentPlaneList(HardwareDisplayPlaneList* plane_list) const;
// Populates scanout formats supported by all planes.
void PopulateSupportedFormats();
virtual bool CommitColorMatrix(const CrtcProperties& crtc_props) = 0;
virtual bool CommitGammaCorrection(const CrtcProperties& crtc_props) = 0;
// Object containing the connection to the graphics device and wraps the API
// calls to control it. Not owned.
DrmDevice* drm_;
bool has_universal_planes_ = false;
std::vector<std::unique_ptr<HardwareDisplayPlane>> planes_;
std::vector<CrtcState> crtc_state_;
std::vector<uint32_t> supported_formats_;
} // namespace ui