sdm/libs/hwc/hwc_session.h

/*
* Copyright (c) 2014 - 2017, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
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*      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.
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*      endorse or promote products derived from this software without specific prior written
*      permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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#ifndef __HWC_SESSION_H__
#define __HWC_SESSION_H__

#include <hardware/hwcomposer.h>
#include <core/core_interface.h>
#include <utils/locker.h>

#include "hwc_display_primary.h"
#include "hwc_display_external.h"
#include "hwc_display_virtual.h"
#include "hwc_color_manager.h"
#include "hwc_socket_handler.h"

namespace sdm {

class HWCSession : hwc_composer_device_1_t, public qClient::BnQClient {
 public:
  struct HWCModuleMethods : public hw_module_methods_t {
    HWCModuleMethods() {
      hw_module_methods_t::open = HWCSession::Open;
    }
  };

  explicit HWCSession(const hw_module_t *module);
  int Init();
  int Deinit();

 private:
  static const int kExternalConnectionTimeoutMs = 500;
  static const int kPartialUpdateControlTimeoutMs = 100;

  // hwc methods
  static int Open(const hw_module_t *module, const char* name, hw_device_t **device);
  static int Close(hw_device_t *device);
  static int Prepare(hwc_composer_device_1 *device, size_t num_displays,
                     hwc_display_contents_1_t **displays);
  static int Set(hwc_composer_device_1 *device, size_t num_displays,
                 hwc_display_contents_1_t **displays);
  static int EventControl(hwc_composer_device_1 *device, int disp, int event, int enable);
  static int SetPowerMode(hwc_composer_device_1 *device, int disp, int mode);
  static int Query(hwc_composer_device_1 *device, int param, int *value);
  static void RegisterProcs(hwc_composer_device_1 *device, hwc_procs_t const *procs);
  static void Dump(hwc_composer_device_1 *device, char *buffer, int length);
  // These config functions always return FB params, the actual display params may differ.
  static int GetDisplayConfigs(hwc_composer_device_1 *device, int disp, uint32_t *configs,
                               size_t *numConfigs);
  static int GetDisplayAttributes(hwc_composer_device_1 *device, int disp, uint32_t config,
                                  const uint32_t *display_attributes, int32_t *values);
  static int GetActiveConfig(hwc_composer_device_1 *device, int disp);
  static int SetActiveConfig(hwc_composer_device_1 *device, int disp, int index);
  static int SetCursorPositionAsync(hwc_composer_device_1 *device, int disp, int x, int y);
  static void CloseAcquireFds(hwc_display_contents_1_t *content_list);
  bool IsDisplayYUV(int disp);

  // Uevent thread
  static void* HWCUeventThread(void *context);
  void* HWCUeventThreadHandler();
  int GetEventValue(const char *uevent_data, int length, const char *event_info);
  int HotPlugHandler(bool connected);
  void ResetPanel();
  int ConnectDisplay(int disp, hwc_display_contents_1_t *content_list);
  int DisconnectDisplay(int disp);
  void HandleSecureDisplaySession(hwc_display_contents_1_t **displays);
  int GetVsyncPeriod(int disp);
  int CreateExternalDisplay(int disp, uint32_t primary_width, uint32_t primary_height,
                            bool use_primary_res);

  // 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);
  void 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 SetSecondaryDisplayStatus(const android::Parcel *input_parcel,
                                              android::Parcel *output_parcel);
  android::status_t ToggleScreenUpdates(const android::Parcel *input_parcel,
                                        android::Parcel *output_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 ControlPartialUpdate(const android::Parcel *input_parcel, android::Parcel *out);
  android::status_t OnMinHdcpEncryptionLevelChange(const android::Parcel *input_parcel,
                                                   android::Parcel *output_parcel);
  android::status_t SetPanelBrightness(const android::Parcel *input_parcel,
                                       android::Parcel *output_parcel);
  android::status_t GetPanelBrightness(const android::Parcel *input_parcel,
                                       android::Parcel *output_parcel);
  // These functions return the actual display config info as opposed to FB
  android::status_t HandleSetActiveDisplayConfig(const android::Parcel *input_parcel,
                                                 android::Parcel *output_parcel);
  android::status_t HandleGetActiveDisplayConfig(const android::Parcel *input_parcel,
                                                 android::Parcel *output_parcel);
  android::status_t HandleGetDisplayConfigCount(const android::Parcel *input_parcel,
                                                android::Parcel *output_parcel);
  android::status_t HandleGetDisplayAttributesForConfig(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 SetDynamicBWForCamera(const android::Parcel *input_parcel,
                                          android::Parcel *output_parcel);
  android::status_t GetBWTransactionStatus(const android::Parcel *input_parcel,
                                          android::Parcel *output_parcel);
  android::status_t SetMixerResolution(const android::Parcel *input_parcel);
  android::status_t SetDisplayPort(DisplayPort sdm_disp_port, int *hwc_disp_port);
  android::status_t GetHdrCapabilities(const android::Parcel *input_parcel,
                                       android::Parcel *output_parcel);

  static Locker locker_;
  CoreInterface *core_intf_ = NULL;
  hwc_procs_t hwc_procs_default_;
  hwc_procs_t const *hwc_procs_ = &hwc_procs_default_;
  HWCDisplay *hwc_display_[HWC_NUM_DISPLAY_TYPES] = { NULL };
  pthread_t uevent_thread_;
  bool uevent_thread_exit_ = false;
  const char *uevent_thread_name_ = "HWC_UeventThread";
  HWCBufferAllocator buffer_allocator_;
  HWCBufferSyncHandler buffer_sync_handler_;
  HWCColorManager *color_mgr_ = NULL;
  bool reset_panel_ = false;
  bool secure_display_active_ = false;
  bool external_pending_connect_ = false;
  bool new_bw_mode_ = false;
  bool need_invalidate_ = false;
  int bw_mode_release_fd_ = -1;
  qService::QService *qservice_ = NULL;
  bool is_hdmi_primary_ = false;
  bool is_hdmi_yuv_ = false;
  std::bitset<HWC_NUM_DISPLAY_TYPES> connected_displays_;  // Bit mask of connected displays
  HWCSocketHandler socket_handler_;
  Locker uevent_locker_;
};

}  // namespace sdm

#endif  // __HWC_SESSION_H__