/*
 * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved.
 * Not a Contribution.
 *
 * Copyright 2015 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.
 */

/*
 * Changes from Qualcomm Innovation Center are provided under the following license:
 *
 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted (subject to the limitations in the
 * disclaimer below) provided that the following conditions are met:
 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *    * Redistributions in binary form must reproduce the above
 *      copyright notice, this list of conditions and the following
 *      disclaimer in the documentation and/or other materials provided
 *      with the distribution.
 *
 *    * Neither the name of Qualcomm Innovation Center, Inc. nor the names of its
 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
 * GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __HWC_SESSION_H__
#define __HWC_SESSION_H__

#include <vendor/qti/hardware/display/composer/3.0/IQtiComposerClient.h>
#include <config/device_interface.h>

#include <core/core_interface.h>
#include <utils/locker.h>
#include <utils/constants.h>
#include <qd_utils.h>
#include <display_config.h>
#include <vector>
#include <queue>
#include <utility>
#include <future>   // NOLINT
#include <map>
#include <string>

#include "hwc_callbacks.h"
#include "hwc_layers.h"
#include "hwc_display.h"
#include "hwc_display_builtin.h"
#include "hwc_display_pluggable.h"
#include "hwc_display_dummy.h"
#include "hwc_display_virtual.h"
#include "hwc_display_pluggable_test.h"
#include "hwc_color_manager.h"
#include "hwc_socket_handler.h"
#include "hwc_display_event_handler.h"
#include "hwc_buffer_sync_handler.h"
#include "hwc_display_virtual_factory.h"

using ::android::hardware::Return;
using ::android::hardware::hidl_string;
using android::hardware::hidl_handle;
using ::android::sp;
using ::android::hardware::Void;
namespace composer_V2_4 = ::android::hardware::graphics::composer::V2_4;
using HwcDisplayCapability = composer_V2_4::IComposerClient::DisplayCapability;
using HwcDisplayConnectionType = composer_V2_4::IComposerClient::DisplayConnectionType;
using HwcClientTargetProperty = composer_V2_4::IComposerClient::ClientTargetProperty;

namespace sdm {

using vendor::qti::hardware::display::composer::V3_0::IQtiComposerClient;
int32_t GetDataspaceFromColorMode(ColorMode mode);

typedef DisplayConfig::DisplayType DispType;
#ifdef DISPLAY_CONFIG_CAMERA_SMOOTH_APIs_1_0
typedef DisplayConfig::CameraSmoothOp CameraSmoothOp;
#endif

// Create a singleton uevent listener thread valid for life of hardware composer process.
// This thread blocks on uevents poll inside uevent library implementation. This poll exits
// only when there is a valid uevent, it can not be interrupted otherwise. Tieing life cycle
// of this thread with HWC session cause HWC deinitialization to wait infinitely for the
// thread to exit.
class HWCUEventListener {
 public:
  virtual ~HWCUEventListener() {}
  virtual void UEventHandler(const char *uevent_data, int length) = 0;
};

class HWCUEvent {
 public:
  HWCUEvent();
  static void UEventThread(HWCUEvent *hwc_event);
  void Register(HWCUEventListener *uevent_listener);
  inline bool InitDone() { return init_done_; }

 private:
  std::mutex mutex_;
  std::condition_variable caller_cv_;
  HWCUEventListener *uevent_listener_ = nullptr;
  bool init_done_ = false;
};

constexpr int32_t kDataspaceSaturationMatrixCount = 16;
constexpr int32_t kDataspaceSaturationPropertyElements = 9;
constexpr int32_t kPropertyMax = 256;

class HWCSession : hwc2_device_t, HWCUEventListener, public qClient::BnQClient,
                   public HWCDisplayEventHandler, public DisplayConfig::ClientContext {
 public:
  enum HotPlugEvent {
    kHotPlugNone,
    kHotPlugEvent,
  };

  HWCSession();
  int Init();
  int Deinit();
  HWC2::Error CreateVirtualDisplayObj(uint32_t width, uint32_t height, int32_t *format,
                                      hwc2_display_t *out_display_id);

  template <typename... Args>
  int32_t CallDisplayFunction(hwc2_display_t display, HWC2::Error (HWCDisplay::*member)(Args...),
                              Args... args) {
    if (display >= HWCCallbacks::kNumDisplays) {
      return HWC2_ERROR_BAD_DISPLAY;
    }

    {
      // Power state transition start.
      SCOPE_LOCK(power_state_[display]);
      if (power_state_transition_[display]) {
        display = map_hwc_display_.find(display)->second;
      }
    }

    SCOPE_LOCK(locker_[display]);
    auto status = HWC2::Error::BadDisplay;
    if (hwc_display_[display]) {
      auto hwc_display = hwc_display_[display];
      status = (hwc_display->*member)(std::forward<Args>(args)...);
    }
    return INT32(status);
  }

  template <typename... Args>
  int32_t CallLayerFunction(hwc2_display_t display, hwc2_layer_t layer,
                            HWC2::Error (HWCLayer::*member)(Args...), Args... args) {
    if (display >= HWCCallbacks::kNumDisplays) {
      return HWC2_ERROR_BAD_DISPLAY;
    }

    {
      // Power state transition start.
      SCOPE_LOCK(power_state_[display]);
      if (power_state_transition_[display]) {
        display = map_hwc_display_.find(display)->second;
      }
    }

    SCOPE_LOCK(locker_[display]);
    auto status = HWC2::Error::BadDisplay;
    if (hwc_display_[display]) {
      status = HWC2::Error::BadLayer;
      auto hwc_layer = hwc_display_[display]->GetHWCLayer(layer);
      if (hwc_layer != nullptr) {
        status = (hwc_layer->*member)(std::forward<Args>(args)...);
        if (hwc_display_[display]->GetGeometryChanges()) {
          hwc_display_[display]->ResetValidation();
        }
      }
    }
    return INT32(status);
  }

  // HWC2 Functions that require a concrete implementation in hwc session
  // and hence need to be member functions
  static HWCSession *GetInstance();
  void GetCapabilities(uint32_t *outCount, int32_t *outCapabilities);
  void Dump(uint32_t *out_size, char *out_buffer);

  int32_t AcceptDisplayChanges(hwc2_display_t display);
  int32_t CreateLayer(hwc2_display_t display, hwc2_layer_t *out_layer_id);
  int32_t CreateVirtualDisplay(uint32_t width, uint32_t height, int32_t *format,
                               hwc2_display_t *out_display_id);
  int32_t DestroyLayer(hwc2_display_t display, hwc2_layer_t layer);
  int32_t DestroyVirtualDisplay(hwc2_display_t display);
  int32_t PresentDisplay(hwc2_display_t display, shared_ptr<Fence> *out_retire_fence);
  void RegisterCallback(int32_t descriptor, hwc2_callback_data_t callback_data,
                        hwc2_function_pointer_t pointer);
  int32_t SetOutputBuffer(hwc2_display_t display, buffer_handle_t buffer,
                          const shared_ptr<Fence> &release_fence);
  int32_t SetPowerMode(hwc2_display_t display, int32_t int_mode);
  int32_t ValidateDisplay(hwc2_display_t display, uint32_t *out_num_types,
                          uint32_t *out_num_requests);
  int32_t SetColorMode(hwc2_display_t display, int32_t /*ColorMode*/ int_mode);
  int32_t SetColorModeWithRenderIntent(hwc2_display_t display, int32_t /*ColorMode*/ int_mode,
                                       int32_t /*RenderIntent*/ int_render_intent);
  int32_t SetColorTransform(hwc2_display_t display, const float *matrix,
                            int32_t /*android_color_transform_t*/ hint);
  int32_t GetReadbackBufferAttributes(hwc2_display_t display,
                                      int32_t *format, int32_t *dataspace);
  int32_t SetReadbackBuffer(hwc2_display_t display, const native_handle_t *buffer,
                            const shared_ptr<Fence> &acquire_fence);
  int32_t GetReadbackBufferFence(hwc2_display_t display, shared_ptr<Fence> *release_fence);
  uint32_t GetMaxVirtualDisplayCount();
  int32_t GetDisplayIdentificationData(hwc2_display_t display, uint8_t *outPort,
                                       uint32_t *outDataSize, uint8_t *outData);
  int32_t GetDisplayCapabilities(hwc2_display_t display, uint32_t *outNumCapabilities,
                                 uint32_t *capabilities);
  int32_t GetDisplayCapabilities_2_4(hwc2_display_t display, uint32_t *outNumCapabilities,
                                     uint32_t *capabilities);
  int32_t GetDisplayCapabilities(hwc2_display_t display,
                                 hidl_vec<HwcDisplayCapability> *capabilities);
  int32_t GetDisplayCapabilities2_3(hwc2_display_t display,
                                    uint32_t *outNumCapabilities, uint32_t *outCapabilities);
  int32_t GetDisplayBrightnessSupport(hwc2_display_t display, bool *outSupport);
  int32_t SetDisplayBrightness(hwc2_display_t display, float brightness);
  void WaitForResources(bool wait_for_resources, hwc2_display_t active_builtin_id,
                        hwc2_display_t display_id);

  // newly added
  int32_t GetDisplayType(hwc2_display_t display, int32_t *out_type);
  int32_t GetDisplayAttribute(hwc2_display_t display, hwc2_config_t config, HwcAttribute attribute,
                              int32_t *out_value);
  int32_t GetActiveConfig(hwc2_display_t display, hwc2_config_t *out_config);
  int32_t GetColorModes(hwc2_display_t display, uint32_t *out_num_modes,
                        int32_t /*ColorMode*/ *int_out_modes);
  int32_t GetRenderIntents(hwc2_display_t display, int32_t /*ColorMode*/ int_mode,
                           uint32_t *out_num_intents, int32_t /*RenderIntent*/ *int_out_intents);
  int32_t GetHdrCapabilities(hwc2_display_t display, uint32_t* out_num_types, int32_t* out_types,
                             float* out_max_luminance, float* out_max_average_luminance,
                             float* out_min_luminance);
  int32_t GetPerFrameMetadataKeys(hwc2_display_t display, uint32_t *out_num_keys,
                                  int32_t *int_out_keys);
  int32_t GetClientTargetSupport(hwc2_display_t display, uint32_t width, uint32_t height,
                                 int32_t format, int32_t dataspace);
  int32_t GetDisplayName(hwc2_display_t display, uint32_t *out_size, char *out_name);
  int32_t SetActiveConfig(hwc2_display_t display, hwc2_config_t config);
  int32_t GetChangedCompositionTypes(hwc2_display_t display, uint32_t *out_num_elements,
                                     hwc2_layer_t *out_layers, int32_t *out_types);
  int32_t GetDisplayRequests(hwc2_display_t display, int32_t *out_display_requests,
                             uint32_t *out_num_elements, hwc2_layer_t *out_layers,
                             int32_t *out_layer_requests);
  int32_t GetReleaseFences(hwc2_display_t display, uint32_t *out_num_elements,
                           hwc2_layer_t *out_layers, std::vector<shared_ptr<Fence>> *out_fences);
  int32_t SetClientTarget(hwc2_display_t display, buffer_handle_t target,
                          shared_ptr<Fence> acquire_fence,
                          int32_t dataspace, hwc_region_t damage);
  int32_t SetCursorPosition(hwc2_display_t display, hwc2_layer_t layer, int32_t x, int32_t y);
  int32_t GetDataspaceSaturationMatrix(int32_t /*Dataspace*/ int_dataspace, float *out_matrix);
  int32_t SetDisplayBrightnessScale(const android::Parcel *input_parcel);
  int32_t GetDisplayConnectionType(hwc2_display_t display, HwcDisplayConnectionType *type);
  int32_t GetClientTargetProperty(hwc2_display_t display,
                                  HwcClientTargetProperty *outClientTargetProperty);

  // Layer functions
  int32_t SetLayerBuffer(hwc2_display_t display, hwc2_layer_t layer, buffer_handle_t buffer,
                         const shared_ptr<Fence> &acquire_fence);
  int32_t SetLayerBlendMode(hwc2_display_t display, hwc2_layer_t layer, int32_t int_mode);
  int32_t SetLayerDisplayFrame(hwc2_display_t display, hwc2_layer_t layer, hwc_rect_t frame);
  int32_t SetLayerPlaneAlpha(hwc2_display_t display, hwc2_layer_t layer, float alpha);
  int32_t SetLayerSourceCrop(hwc2_display_t display, hwc2_layer_t layer, hwc_frect_t crop);
  int32_t SetLayerTransform(hwc2_display_t display, hwc2_layer_t layer, int32_t int_transform);
  int32_t SetLayerZOrder(hwc2_display_t display, hwc2_layer_t layer, uint32_t z);
  int32_t SetLayerType(hwc2_display_t display, hwc2_layer_t layer,
                       IQtiComposerClient::LayerType type);
  int32_t SetLayerSurfaceDamage(hwc2_display_t display, hwc2_layer_t layer, hwc_region_t damage);
  int32_t SetLayerVisibleRegion(hwc2_display_t display, hwc2_layer_t layer, hwc_region_t damage);
  int32_t SetLayerCompositionType(hwc2_display_t display, hwc2_layer_t layer, int32_t int_type);
  int32_t SetLayerColor(hwc2_display_t display, hwc2_layer_t layer, hwc_color_t color);
  int32_t SetLayerDataspace(hwc2_display_t display, hwc2_layer_t layer, int32_t dataspace);
  int32_t SetLayerPerFrameMetadata(hwc2_display_t display, hwc2_layer_t layer,
                                   uint32_t num_elements, const int32_t *int_keys,
                                   const float *metadata);
  int32_t SetLayerColorTransform(hwc2_display_t display, hwc2_layer_t layer, const float *matrix);
  int32_t SetLayerPerFrameMetadataBlobs(hwc2_display_t display, hwc2_layer_t layer,
                                        uint32_t num_elements, const int32_t *int_keys,
                                        const uint32_t *sizes, const uint8_t *metadata);
  int32_t SetDisplayedContentSamplingEnabled(hwc2_display_t display, int32_t enabled,
                                             uint8_t component_mask, uint64_t max_frames);
  int32_t GetDisplayedContentSamplingAttributes(hwc2_display_t display, int32_t *format,
                                                int32_t *dataspace, uint8_t *supported_components);
  int32_t GetDisplayedContentSample(hwc2_display_t display, uint64_t max_frames, uint64_t timestamp,
                                    uint64_t *numFrames,
                                    int32_t samples_size[NUM_HISTOGRAM_COLOR_COMPONENTS],
                                    uint64_t *samples[NUM_HISTOGRAM_COLOR_COMPONENTS]);
  int32_t SetDisplayElapseTime(hwc2_display_t display, uint64_t time);


  virtual int RegisterClientContext(std::shared_ptr<DisplayConfig::ConfigCallback> callback,
                                    DisplayConfig::ConfigInterface **intf);
  virtual void UnRegisterClientContext(DisplayConfig::ConfigInterface *intf);

  // HWCDisplayEventHandler
  virtual void DisplayPowerReset();

  int32_t SetVsyncEnabled(hwc2_display_t display, int32_t int_enabled);
  int32_t GetDozeSupport(hwc2_display_t display, int32_t *out_support);
  int32_t GetDisplayConfigs(hwc2_display_t display, uint32_t *out_num_configs,
                            hwc2_config_t *out_configs);
  int32_t GetVsyncPeriod(hwc2_display_t disp, uint32_t *vsync_period);
  void Refresh(hwc2_display_t display);

  int32_t GetDisplayVsyncPeriod(hwc2_display_t display, VsyncPeriodNanos *out_vsync_period);
  int32_t SetActiveConfigWithConstraints(
      hwc2_display_t display, hwc2_config_t config,
      const VsyncPeriodChangeConstraints *vsync_period_change_constraints,
      VsyncPeriodChangeTimeline *out_timeline);

  int32_t SetAutoLowLatencyMode(hwc2_display_t display, bool on);
  int32_t GetSupportedContentTypes(hwc2_display_t display, hidl_vec<HwcContentType> *types);
  int32_t SetContentType(hwc2_display_t display, HwcContentType type);

  static Locker locker_[HWCCallbacks::kNumDisplays];
  static Locker power_state_[HWCCallbacks::kNumDisplays];
  static Locker hdr_locker_[HWCCallbacks::kNumDisplays];
  static Locker display_config_locker_;
  static Locker system_locker_;

  void RegisterDisplayCallback();
  bool IsHbmSupported();
  void SetHbmState(HbmState state);
  HbmState GetHbmState();
  bool IsLbeSupported();
  void SetLbeState(LbeState state);
  void SetLbeAmbientLight(int value);
  LbeState GetLbeState();

 private:
  class CWB {
   public:
    explicit CWB(HWCSession *hwc_session) : hwc_session_(hwc_session) { }
    void PresentDisplayDone(hwc2_display_t disp_id);

    int32_t PostBuffer(std::weak_ptr<DisplayConfig::ConfigCallback> callback, bool post_processed,
                       const native_handle_t *buffer);

   private:
    struct QueueNode {
      QueueNode(std::weak_ptr<DisplayConfig::ConfigCallback> cb, bool pp, const hidl_handle& buf)
        : callback(cb), post_processed(pp), buffer(buf) { }

      std::weak_ptr<DisplayConfig::ConfigCallback> callback;
      bool post_processed = false;
      const native_handle_t *buffer;
    };

    void ProcessRequests();
    static void AsyncTask(CWB *cwb);

    std::queue<QueueNode *> queue_;

    std::future<void> future_;
    Locker queue_lock_;
    std::mutex mutex_;
    std::condition_variable cv_;
    HWCSession *hwc_session_ = nullptr;
  };

  class DisplayConfigImpl: public DisplayConfig::ConfigInterface {
   public:
    explicit DisplayConfigImpl(std::weak_ptr<DisplayConfig::ConfigCallback> callback,
                               HWCSession *hwc_session);

   private:
    virtual int IsDisplayConnected(DispType dpy, bool *connected);
    virtual int SetDisplayStatus(DispType dpy, DisplayConfig::ExternalStatus status);
    virtual int ConfigureDynRefreshRate(DisplayConfig::DynRefreshRateOp op, uint32_t refresh_rate);
    virtual int GetConfigCount(DispType dpy, uint32_t *count);
    virtual int GetActiveConfig(DispType dpy, uint32_t *config);
    virtual int SetActiveConfig(DispType dpy, uint32_t config);
    virtual int GetDisplayAttributes(uint32_t config_index, DispType dpy,
                                     DisplayConfig::Attributes *attributes);
    virtual int SetPanelBrightness(uint32_t level);
    virtual int GetPanelBrightness(uint32_t *level);
    virtual int MinHdcpEncryptionLevelChanged(DispType dpy, uint32_t min_enc_level);
    virtual int RefreshScreen();
    virtual int ControlPartialUpdate(DispType dpy, bool enable);
    virtual int ToggleScreenUpdate(bool on);
    virtual int SetIdleTimeout(uint32_t value);
    virtual int GetHDRCapabilities(DispType dpy, DisplayConfig::HDRCapsParams *caps);
    virtual int SetCameraLaunchStatus(uint32_t on);
    virtual int DisplayBWTransactionPending(bool *status);
    virtual int SetDisplayAnimating(uint64_t display_id, bool animating);
    virtual int ControlIdlePowerCollapse(bool enable, bool synchronous);
    virtual int GetWriteBackCapabilities(bool *is_wb_ubwc_supported);
    virtual int SetDisplayDppsAdROI(uint32_t display_id, uint32_t h_start, uint32_t h_end,
                                    uint32_t v_start, uint32_t v_end, uint32_t factor_in,
                                    uint32_t factor_out);
    virtual int UpdateVSyncSourceOnPowerModeOff();
    virtual int UpdateVSyncSourceOnPowerModeDoze();
    virtual int SetPowerMode(uint32_t disp_id, DisplayConfig::PowerMode power_mode);
    virtual int IsPowerModeOverrideSupported(uint32_t disp_id, bool *supported);
    virtual int IsHDRSupported(uint32_t disp_id, bool *supported);
    virtual int IsWCGSupported(uint32_t disp_id, bool *supported);
    virtual int SetLayerAsMask(uint32_t disp_id, uint64_t layer_id);
    virtual int GetDebugProperty(const std::string prop_name, std::string value) {return -EINVAL;}
    virtual int GetDebugProperty(const std::string prop_name, std::string *value);
    virtual int GetActiveBuiltinDisplayAttributes(DisplayConfig::Attributes *attr);
    virtual int SetPanelLuminanceAttributes(uint32_t disp_id, float min_lum, float max_lum);
    virtual int IsBuiltInDisplay(uint32_t disp_id, bool *is_builtin);
    virtual int IsAsyncVDSCreationSupported(bool *supported);
    virtual int CreateVirtualDisplay(uint32_t width, uint32_t height, int format);
    virtual int GetSupportedDSIBitClks(uint32_t disp_id,
                                       std::vector<uint64_t> bit_clks) {return -EINVAL;}
    virtual int GetSupportedDSIBitClks(uint32_t disp_id, std::vector<uint64_t> *bit_clks);
    virtual int GetDSIClk(uint32_t disp_id, uint64_t *bit_clk);
    virtual int SetDSIClk(uint32_t disp_id, uint64_t bit_clk);
    virtual int SetCWBOutputBuffer(uint32_t disp_id, const DisplayConfig::Rect rect,
                                   bool post_processed, const native_handle_t *buffer);
    virtual int SetQsyncMode(uint32_t disp_id, DisplayConfig::QsyncMode mode);
    virtual int IsSmartPanelConfig(uint32_t disp_id, uint32_t config_id, bool *is_smart);
    virtual int IsRotatorSupportedFormat(int hal_format, bool ubwc, bool *supported);
    virtual int ControlQsyncCallback(bool enable);
    virtual int ControlIdleStatusCallback(bool enable);
#ifdef DISPLAY_CONFIG_CAMERA_SMOOTH_APIs_1_0
    virtual int SetCameraSmoothInfo(CameraSmoothOp op, uint32_t fps);
    virtual int ControlCameraSmoothCallback(bool enable);
#endif
    virtual int IsRCSupported(uint32_t disp_id, bool *supported);
    virtual int AllowIdleFallback();

    std::weak_ptr<DisplayConfig::ConfigCallback> callback_;
    HWCSession *hwc_session_ = nullptr;
  };

  struct DisplayMapInfo {
    hwc2_display_t client_id = HWCCallbacks::kNumDisplays;        // mapped sf id for this display
    int32_t sdm_id = -1;                                         // sdm id for this display
    sdm:: DisplayType disp_type = kDisplayTypeMax;              // sdm display type
    bool test_pattern = false;                                 // display will show test pattern
    void Reset() {
      // Do not clear client id
      sdm_id = -1;
      disp_type = kDisplayTypeMax;
      test_pattern = false;
    }
  };

  static const int kExternalConnectionTimeoutMs = 500;
  static const int kCommitDoneTimeoutMs = 100;
  uint32_t throttling_refresh_rate_ = 60;
  std::mutex hotplug_mutex_;
  std::condition_variable hotplug_cv_;
  void UpdateThrottlingRate();
  void SetNewThrottlingRate(uint32_t new_rate);

  void ResetPanel();
  void InitSupportedDisplaySlots();
  void InitSupportedNullDisplaySlots();
  int GetDisplayIndex(int dpy);
  int CreatePrimaryDisplay();
  void CreateDummyDisplay(hwc2_display_t client_id);
  int HandleBuiltInDisplays();
  int HandlePluggableDisplays(bool delay_hotplug);
  int HandleConnectedDisplays(HWDisplaysInfo *hw_displays_info, bool delay_hotplug);
  int HandleDisconnectedDisplays(HWDisplaysInfo *hw_displays_info);
  void DestroyDisplay(DisplayMapInfo *map_info);
  void DestroyPluggableDisplay(DisplayMapInfo *map_info);
  void DestroyNonPluggableDisplay(DisplayMapInfo *map_info);
  int GetConfigCount(int disp_id, uint32_t *count);
  int GetActiveConfigIndex(int disp_id, uint32_t *config);
  int SetActiveConfigIndex(int disp_id, uint32_t config);
  int ControlPartialUpdate(int dpy, bool enable);
  int DisplayBWTransactionPending(bool *status);
  int SetDisplayStatus(int disp_id, HWCDisplay::DisplayStatus status);
  int MinHdcpEncryptionLevelChanged(int disp_id, uint32_t min_enc_level);
  int IsWbUbwcSupported(bool *value);
  int SetIdleTimeout(uint32_t value);
  int ToggleScreenUpdate(bool on);
  int SetCameraLaunchStatus(uint32_t on);
  int SetDisplayDppsAdROI(uint32_t display_id, uint32_t h_start, uint32_t h_end,
                          uint32_t v_start, uint32_t v_end, uint32_t factor_in,
                          uint32_t factor_out);
  int ControlIdlePowerCollapse(bool enable, bool synchronous);
  int32_t SetDynamicDSIClock(int64_t disp_id, uint32_t bitrate);
  int32_t getDisplayBrightness(uint32_t display, float *brightness);
  int32_t setDisplayBrightness(uint32_t display, float brightness);
  int32_t getDisplayMaxBrightness(uint32_t display, uint32_t *max_brightness_level);
  bool HasHDRSupport(HWCDisplay *hwc_display);
  void PostInit();

  // Uevent handler
  virtual void UEventHandler(const char *uevent_data, int length);

  // service methods
  void StartServices();

  // QClient methods
  virtual android::status_t notifyCallback(uint32_t command, const android::Parcel *input_parcel,
                                           android::Parcel *output_parcel);
  void DynamicDebug(const android::Parcel *input_parcel);
  android::status_t SetFrameDumpConfig(const android::Parcel *input_parcel);
  android::status_t SetMaxMixerStages(const android::Parcel *input_parcel);
  android::status_t SetDisplayMode(const android::Parcel *input_parcel);
  android::status_t ConfigureRefreshRate(const android::Parcel *input_parcel);
  android::status_t QdcmCMDHandler(const android::Parcel *input_parcel,
                                   android::Parcel *output_parcel);
  android::status_t QdcmCMDDispatch(uint32_t display_id,
                                    const PPDisplayAPIPayload &req_payload,
                                    PPDisplayAPIPayload *resp_payload,
                                    PPPendingParams *pending_action);
  android::status_t GetDisplayAttributesForConfig(const android::Parcel *input_parcel,
                                                  android::Parcel *output_parcel);
  android::status_t GetVisibleDisplayRect(const android::Parcel *input_parcel,
                                          android::Parcel *output_parcel);
  android::status_t SetMixerResolution(const android::Parcel *input_parcel);
  android::status_t SetColorModeOverride(const android::Parcel *input_parcel);
  android::status_t SetColorModeWithRenderIntentOverride(const android::Parcel *input_parcel);

  android::status_t SetColorModeById(const android::Parcel *input_parcel);
  android::status_t SetColorModeFromClient(const android::Parcel *input_parcel);
  android::status_t getComposerStatus();
  android::status_t SetStandByMode(const android::Parcel *input_parcel);
  android::status_t GetPanelResolution(const android::Parcel *input_parcel,
                                       android::Parcel *output_parcel);
  android::status_t DelayFirstCommit();
  android::status_t SetQSyncMode(const android::Parcel *input_parcel);
  android::status_t SetIdlePC(const android::Parcel *input_parcel);
  android::status_t SetDisplayDeviceStatus(const android::Parcel *input_parcel);
  android::status_t SetPanelGammaTableSource(const android::Parcel *input_parcel);
  android::status_t RefreshScreen(const android::Parcel *input_parcel);
  android::status_t SetAd4RoiConfig(const android::Parcel *input_parcel);
  android::status_t SetDsiClk(const android::Parcel *input_parcel);
  android::status_t GetDsiClk(const android::Parcel *input_parcel, android::Parcel *output_parcel);
  android::status_t GetSupportedDsiClk(const android::Parcel *input_parcel,
                                       android::Parcel *output_parcel);
  android::status_t SetFrameTriggerMode(const android::Parcel *input_parcel);
  android::status_t SetPanelLuminanceAttributes(const android::Parcel *input_parcel);
  android::status_t setColorSamplingEnabled(const android::Parcel *input_parcel);

  // Internal methods
  HWC2::Error ValidateDisplayInternal(hwc2_display_t display, uint32_t *out_num_types,
                                      uint32_t *out_num_requests);
  HWC2::Error PresentDisplayInternal(hwc2_display_t display);
  void HandleSecureSession();
  void SetCpuPerfHintLargeCompCycle();
  void HandlePendingPowerMode(hwc2_display_t display, const shared_ptr<Fence> &retire_fence);
  void HandlePendingHotplug(hwc2_display_t disp_id, const shared_ptr<Fence> &retire_fence);
  bool IsPluggableDisplayConnected();
  hwc2_display_t GetActiveBuiltinDisplay();
  void HandlePendingRefresh();
  void NotifyClientStatus(bool connected);
  int32_t GetVirtualDisplayId();
  void PerformQsyncCallback(hwc2_display_t display);
  bool isSmartPanelConfig(uint32_t disp_id, uint32_t config_id);
  void PerformIdleStatusCallback(hwc2_display_t display);

  int SendLTMCommand(const char *cmd);

  CoreInterface *core_intf_ = nullptr;
  HWCDisplay *hwc_display_[HWCCallbacks::kNumDisplays] = {nullptr};
  HWCCallbacks callbacks_;
  HWCBufferAllocator buffer_allocator_;
  HWCVirtualDisplayFactory virtual_display_factory_;
  HWCColorManager *color_mgr_ = nullptr;
  DisplayMapInfo map_info_primary_;                 // Primary display (either builtin or pluggable)
  std::vector<DisplayMapInfo> map_info_builtin_;    // Builtin displays excluding primary
  std::vector<DisplayMapInfo> map_info_pluggable_;  // Pluggable displays excluding primary
  std::vector<DisplayMapInfo> map_info_virtual_;    // Virtual displays
  bool update_vsync_on_power_off_ = false;
  bool update_vsync_on_doze_ = false;
  std::vector<bool> is_hdr_display_;    // info on HDR supported
  std::map <hwc2_display_t, hwc2_display_t> map_hwc_display_;  // Real and dummy display pairs.
  bool reset_panel_ = false;
  bool client_connected_ = false;
  bool new_bw_mode_ = false;
  bool need_invalidate_ = false;
  int bw_mode_release_fd_ = -1;
  qService::QService *qservice_ = nullptr;
  HWCSocketHandler socket_handler_;
  bool hdmi_is_primary_ = false;
  bool is_composer_up_ = false;
  std::mutex mutex_lum_;
  int hpd_bpp_ = 0;
  int hpd_pattern_ = 0;
  static bool pending_power_mode_[HWCCallbacks::kNumDisplays];
  static int null_display_mode_;
  HotPlugEvent pending_hotplug_event_ = kHotPlugNone;
  hwc2_display_t virtual_id_ = HWCCallbacks::kNumDisplays;
  Locker pluggable_handler_lock_;
  bool destroy_virtual_disp_pending_ = false;
  uint32_t idle_pc_ref_cnt_ = 0;
  int32_t disable_hotplug_bwcheck_ = 0;
  int32_t disable_mask_layer_hint_ = 0;
  float set_max_lum_ = -1.0;
  float set_min_lum_ = -1.0;
  std::bitset<HWCCallbacks::kNumDisplays> pending_refresh_;
  CWB cwb_;
  std::weak_ptr<DisplayConfig::ConfigCallback> qsync_callback_;
  std::weak_ptr<DisplayConfig::ConfigCallback> idle_callback_;
#ifdef DISPLAY_CONFIG_CAMERA_SMOOTH_APIs_1_0
  std::weak_ptr<DisplayConfig::ConfigCallback> camera_callback_;
#endif
  bool async_powermode_ = false;
  bool async_power_mode_triggered_ = false;
  bool async_vds_creation_ = false;
  bool power_state_transition_[HWCCallbacks::kNumDisplays] = {};
  std::bitset<HWCCallbacks::kNumDisplays> display_ready_;
  bool secure_session_active_ = false;

  int32_t is_lbe_supported_ = 0;
  LbeState lbe_cur_state_ = LbeState::OFF;
  int pps_socket_ = -1;
  int8_t pps_retry = 5;
  static constexpr const char *ltm_on_cmd_ = "Ltm:On:Primary:Auto";
  static constexpr const char *ltm_off_cmd_ = "Ltm:Off:Primary";
  static constexpr const char *ltm_lux_cmd_ = "Ltm:Als:Primary:";
  static constexpr const char *ltm_default_mode_cmd_ = "Ltm:UserMode:Primary:default";
  static constexpr const char *ltm_hbm_mode_cmd_ = "Ltm:UserMode:Primary:hbm";
  static constexpr const char *ltm_power_save_mode_cmd_ = "Ltm:UserMode:Primary:power_save";
  static constexpr const char *ltm_get_mode_cmd_ = "Ltm:GetUserMode:Primary";
  bool is_idle_time_up_ = false;
};
}  // namespace sdm

#endif  // __HWC_SESSION_H__