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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_HWC2_DEVICE_HWC_DISPLAY_H
#define ANDROID_HWC2_DEVICE_HWC_DISPLAY_H
#include <hardware/hwcomposer2.h>
#include <optional>
#include "HwcDisplayConfigs.h"
#include "compositor/DrmDisplayCompositor.h"
#include "drm/ResourceManager.h"
#include "drm/VSyncWorker.h"
#include "drmhwcomposer.h"
#include "hwc2_device/HwcLayer.h"
namespace android {
class Backend;
class DrmHwcTwo;
inline constexpr uint32_t kPrimaryDisplay = 0;
class HwcDisplay {
public:
HwcDisplay(DrmDisplayPipeline *pipeline, hwc2_display_t handle,
HWC2::DisplayType type, DrmHwcTwo *hwc2);
HwcDisplay(const HwcDisplay &) = delete;
~HwcDisplay();
HWC2::Error CreateComposition(AtomicCommitArgs &a_args);
std::vector<HwcLayer *> GetOrderLayersByZPos();
void ClearDisplay();
std::string Dump();
// HWC Hooks
HWC2::Error AcceptDisplayChanges();
HWC2::Error CreateLayer(hwc2_layer_t *layer);
HWC2::Error DestroyLayer(hwc2_layer_t layer);
HWC2::Error GetActiveConfig(hwc2_config_t *config) const;
HWC2::Error GetChangedCompositionTypes(uint32_t *num_elements,
hwc2_layer_t *layers, int32_t *types);
HWC2::Error GetClientTargetSupport(uint32_t width, uint32_t height,
int32_t format, int32_t dataspace);
HWC2::Error GetColorModes(uint32_t *num_modes, int32_t *modes);
HWC2::Error GetDisplayAttribute(hwc2_config_t config, int32_t attribute,
int32_t *value);
HWC2::Error GetDisplayConfigs(uint32_t *num_configs, hwc2_config_t *configs);
HWC2::Error GetDisplayName(uint32_t *size, char *name);
HWC2::Error GetDisplayRequests(int32_t *display_requests,
uint32_t *num_elements, hwc2_layer_t *layers,
int32_t *layer_requests);
HWC2::Error GetDisplayType(int32_t *type);
#if PLATFORM_SDK_VERSION > 27
HWC2::Error GetRenderIntents(int32_t mode, uint32_t *outNumIntents,
int32_t *outIntents);
HWC2::Error SetColorModeWithIntent(int32_t mode, int32_t intent);
#endif
#if PLATFORM_SDK_VERSION > 28
HWC2::Error GetDisplayIdentificationData(uint8_t *outPort,
uint32_t *outDataSize,
uint8_t *outData);
HWC2::Error GetDisplayCapabilities(uint32_t *outNumCapabilities,
uint32_t *outCapabilities);
HWC2::Error GetDisplayBrightnessSupport(bool *supported);
HWC2::Error SetDisplayBrightness(float);
#endif
#if PLATFORM_SDK_VERSION > 29
HWC2::Error GetDisplayConnectionType(uint32_t *outType);
HWC2::Error SetActiveConfigWithConstraints(
hwc2_config_t config,
hwc_vsync_period_change_constraints_t *vsyncPeriodChangeConstraints,
hwc_vsync_period_change_timeline_t *outTimeline);
HWC2::Error SetAutoLowLatencyMode(bool on);
HWC2::Error GetSupportedContentTypes(
uint32_t *outNumSupportedContentTypes,
const uint32_t *outSupportedContentTypes);
HWC2::Error SetContentType(int32_t contentType);
#endif
HWC2::Error GetDisplayVsyncPeriod(uint32_t *outVsyncPeriod);
HWC2::Error GetDozeSupport(int32_t *support);
HWC2::Error GetHdrCapabilities(uint32_t *num_types, int32_t *types,
float *max_luminance,
float *max_average_luminance,
float *min_luminance);
HWC2::Error GetReleaseFences(uint32_t *num_elements, hwc2_layer_t *layers,
int32_t *fences);
HWC2::Error PresentDisplay(int32_t *present_fence);
HWC2::Error SetActiveConfig(hwc2_config_t config);
HWC2::Error ChosePreferredConfig();
HWC2::Error SetClientTarget(buffer_handle_t target, int32_t acquire_fence,
int32_t dataspace, hwc_region_t damage);
HWC2::Error SetColorMode(int32_t mode);
HWC2::Error SetColorTransform(const float *matrix, int32_t hint);
HWC2::Error SetOutputBuffer(buffer_handle_t buffer, int32_t release_fence);
HWC2::Error SetPowerMode(int32_t mode);
HWC2::Error SetVsyncEnabled(int32_t enabled);
HWC2::Error ValidateDisplay(uint32_t *num_types, uint32_t *num_requests);
HwcLayer *get_layer(hwc2_layer_t layer) {
auto it = layers_.find(layer);
if (it == layers_.end())
return nullptr;
return &it->second;
}
/* Statistics */
struct Stats {
Stats minus(Stats b) const {
return {total_frames_ - b.total_frames_,
total_pixops_ - b.total_pixops_,
gpu_pixops_ - b.gpu_pixops_,
failed_kms_validate_ - b.failed_kms_validate_,
failed_kms_present_ - b.failed_kms_present_,
frames_flattened_ - b.frames_flattened_};
}
uint32_t total_frames_ = 0;
uint64_t total_pixops_ = 0;
uint64_t gpu_pixops_ = 0;
uint32_t failed_kms_validate_ = 0;
uint32_t failed_kms_present_ = 0;
uint32_t frames_flattened_ = 0;
};
const Backend *backend() const;
void set_backend(std::unique_ptr<Backend> backend);
auto GetHwc2() {
return hwc2_;
}
std::map<hwc2_layer_t, HwcLayer> &layers() {
return layers_;
}
auto &GetPipe() {
return *pipeline_;
}
android_color_transform_t &color_transform_hint() {
return color_transform_hint_;
}
Stats &total_stats() {
return total_stats_;
}
/* returns true if composition should be sent to client */
bool ProcessClientFlatteningState(bool skip);
void ProcessFlatenningVsyncInternal();
/* Headless mode required to keep SurfaceFlinger alive when all display are
* disconnected, Without headless mode Android will continuously crash.
* Only single internal (primary) display is required to be in HEADLESS mode
* to prevent the crash. See:
* https://source.android.com/devices/graphics/hotplug#handling-common-scenarios
*/
bool IsInHeadlessMode() {
return !pipeline_;
}
private:
enum ClientFlattenningState : int32_t {
Disabled = -3,
NotRequired = -2,
Flattened = -1,
ClientRefreshRequested = 0,
VsyncCountdownMax = 60, /* 1 sec @ 60FPS */
};
std::atomic_int flattenning_state_{ClientFlattenningState::NotRequired};
constexpr static size_t MATRIX_SIZE = 16;
HwcDisplayConfigs configs_;
DrmHwcTwo *const hwc2_;
std::optional<DrmMode> staged_mode_;
int64_t staged_mode_change_time_{};
uint32_t staged_mode_config_id_{};
DrmDisplayPipeline *const pipeline_;
std::unique_ptr<Backend> backend_;
VSyncWorker vsync_worker_;
bool vsync_event_en_{};
bool vsync_flattening_en_{};
bool vsync_tracking_en_{};
int64_t last_vsync_ts_{};
const hwc2_display_t handle_;
HWC2::DisplayType type_;
// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
static uint32_t layer_idx_;
std::map<hwc2_layer_t, HwcLayer> layers_;
HwcLayer client_layer_;
int32_t color_mode_{};
std::array<float, MATRIX_SIZE> color_transform_matrix_{};
android_color_transform_t color_transform_hint_;
uint32_t frame_no_ = 0;
Stats total_stats_;
Stats prev_stats_;
std::string DumpDelta(HwcDisplay::Stats delta);
HWC2::Error Init();
HWC2::Error SetActiveConfigInternal(uint32_t config, int64_t change_time);
};
} // namespace android
#endif
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