text: /*************************************************************************/
  /*  joypad_osx.h                                                         */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
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  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #ifndef JOYPADOSX_H
  #define JOYPADOSX_H
  
  #ifdef MACOS_10_0_4
  #include <IOKit/hidsystem/IOHIDUsageTables.h>
  #else
  #include <Kernel/IOKit/hidsystem/IOHIDUsageTables.h>
  #endif
  #include <ForceFeedback/ForceFeedback.h>
  #include <ForceFeedback/ForceFeedbackConstants.h>
  #include <IOKit/hid/IOHIDLib.h>
  
  #include "main/input_default.h"
  
  struct rec_element {
      IOHIDElementRef ref;
      IOHIDElementCookie cookie;
  
      uint32_t usage;
  
      int min;
      int max;
  
      struct Comparator {
          bool operator()(const rec_element p_a, const rec_element p_b) const { return p_a.usage < p_b.usage; }
      };
  };
  
  struct joypad {
      IOHIDDeviceRef device_ref;
  
      Vector<rec_element> axis_elements;
      Vector<rec_element> button_elements;
      Vector<rec_element> hat_elements;
  
      int id;
  
      io_service_t ffservice; /* Interface for force feedback, 0 = no ff */
      FFCONSTANTFORCE ff_constant_force;
      FFDeviceObjectReference ff_device;
      FFEffectObjectReference ff_object;
      uint64_t ff_timestamp;
      LONG *ff_directions;
      FFEFFECT ff_effect;
      DWORD *ff_axes;
  
      void add_hid_elements(CFArrayRef p_array);
      void add_hid_element(IOHIDElementRef p_element);
  
      bool has_element(IOHIDElementCookie p_cookie, Vector<rec_element> *p_list) const;
      bool config_force_feedback(io_service_t p_service);
      bool check_ff_features();
  
      int get_hid_element_state(rec_element *p_element) const;
  
      void free();
      joypad();
  };
  
  class JoypadOSX {
  
      enum {
          JOYPADS_MAX = 16,
      };
  
  private:
      InputDefault *input;
      IOHIDManagerRef hid_manager;
  
      Vector<joypad> device_list;
  
      bool have_device(IOHIDDeviceRef p_device) const;
      bool configure_joypad(IOHIDDeviceRef p_device_ref, joypad *p_joy);
  
      int get_joy_index(int p_id) const;
      int get_joy_ref(IOHIDDeviceRef p_device) const;
  
      void poll_joypads() const;
      void setup_joypad_objects();
      void config_hid_manager(CFArrayRef p_matching_array) const;
  
      void joypad_vibration_start(int p_id, float p_magnitude, float p_duration, uint64_t p_timestamp);
      void joypad_vibration_stop(int p_id, uint64_t p_timestamp);
  
  public:
      void process_joypads();
  
      void _device_added(IOReturn p_res, IOHIDDeviceRef p_device);
      void _device_removed(IOReturn p_res, IOHIDDeviceRef p_device);
  
      JoypadOSX();
      ~JoypadOSX();
  };
  
  #endif // JOYPADOSX_H
  