/*
 *	wiiuse
 *
 *	Written By:
 *		Michael Laforest	< para >
 *		Email: < thepara (--AT--) g m a i l [--DOT--] com >
 *
 *	Copyright 2006-2007
 *
 *	Mac fields based on wiic_structs.h from WiiC, written By:
 *		Gabriele Randelli
 *		Email: < randelli (--AT--) dis [--DOT--] uniroma1 [--DOT--] it >
 *
 *	Copyright 2010
 *
 *	This file is part of wiiuse.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 3 of the License, or
 *	(at your option) any later version.
 *
 *	This program is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU General Public License for more details.
 *
 *	You should have received a copy of the GNU General Public License
 *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *	$Header$
 *
 */

/**
 *	@file
 *
 *	@brief API header file.
 *
 *	If this file is included from inside the wiiuse source
 *	and not from a third party program, then wiimote_internal.h
 *	is also included which extends this file.
 */

/**
 *	@mainpage
 *
 *  @section intro Introduction
 *
 *  WiiUse is a cross-platform C library for accessing the Nintendo Wii
 *  Remote and its related expansions and variations.
 *
 *  @section project Project
 *
 *  This is a friendly fork of the original WiiUse project, which seems
 *  to have gone defunct. This updated version incorporates improvements
 *  from a number of internal forks found across the Internet, and is
 *  intended to be the new "upstream" of the project. The new homepage is
 *  on GitHub, where the source is maintained:
 *
 *    - http://github.com/wiiuse/wiiuse
 *
 *  Contributions (under the GPL 3+) are welcome and encouraged!
 *
 *  @section publicapisec Public API
 *
 *    - @ref publicapi "Public API" - entirely within @ref wiiuse.h
 *      - @ref wiimote "Wiimote device structure"
 *
 */
#ifndef WIIUSE_H_INCLUDED
#define WIIUSE_H_INCLUDED

#define WIIUSE_MAJOR 0
#define WIIUSE_MINOR 15
#define WIIUSE_MICRO 4

#define WIIUSE_VERSION_TRANSFORM(MAJ, MIN, MICRO) (MAJ * 1000000 + MIN * 1000 + MICRO)
#define WIIUSE_HAS_VERSION(MAJ, MIN, MICRO)    \
    (WIIUSE_VERSION_TRANSFORM(MAJ, MIN, MICRO) \
     <= WIIUSE_VERSION_TRANSFORM(WIIUSE_MAJOR, WIIUSE_MINOR, WIIUSE_MICRO))

#ifndef WIIUSE_PLATFORM
#if defined(_WIN32)
#define WIIUSE_PLATFORM
#define WIIUSE_WIN32
#elif defined(__linux)
#define WIIUSE_PLATFORM
#define WIIUSE_BLUEZ
#elif defined(__APPLE__)
#define WIIUSE_PLATFORM
#define WIIUSE_MAC
#else
#error "Platform not yet supported!"
#endif
#endif

#ifdef WIIUSE_WIN32
/* windows */
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <windows.h>
#endif
#ifdef WIIUSE_BLUEZ
/* nix */
#include <bluetooth/bluetooth.h>
#endif

#if defined(_MSC_VER) && _MSC_VER < 1700
/* MS compilers of pre-VC2010 versions don't have stdint.h
 * and I can't get VC2010's stdint.h to compile nicely in
 * WiiUse
 */
#include "wiiuse_msvcstdint.h"
#else
#include <stdint.h>
#endif

#include <stdio.h> /* for FILE */

/** @defgroup publicapi External API */
/** @{ */

/** @name Wiimote state flags and macros */
/** @{ */
#define WIIMOTE_STATE_DEV_FOUND          0x0001
#define WIIMOTE_STATE_HANDSHAKE          0x0002          /* actual connection exists but no handshake yet */
#define WIIMOTE_STATE_HANDSHAKE_COMPLETE 0x0004 /* actual connection exists but no handshake yet */
#define WIIMOTE_STATE_CONNECTED          0x0008
#define WIIMOTE_STATE_RUMBLE             0x0010
#define WIIMOTE_STATE_ACC                0x0020
#define WIIMOTE_STATE_EXP                0x0040
#define WIIMOTE_STATE_IR                 0x0080
#define WIIMOTE_STATE_SPEAKER            0x0100
#define WIIMOTE_STATE_IR_SENS_LVL1       0x0200
#define WIIMOTE_STATE_IR_SENS_LVL2       0x0400
#define WIIMOTE_STATE_IR_SENS_LVL3       0x0800
#define WIIMOTE_STATE_IR_SENS_LVL4       0x1000
#define WIIMOTE_STATE_IR_SENS_LVL5       0x2000
#define WIIMOTE_STATE_EXP_HANDSHAKE      0x10000 /* actual M+ connection exists but no handshake yet */
#define WIIMOTE_STATE_EXP_EXTERN         0x20000    /* actual M+ connection exists but handshake failed */
#define WIIMOTE_STATE_EXP_FAILED         0x40000    /* actual M+ connection exists but handshake failed */
#define WIIMOTE_STATE_MPLUS_PRESENT      0x80000 /* Motion+ is connected */

#define WIIMOTE_ID(wm) (wm->unid)

#define WIIMOTE_IS_SET(wm, s) ((wm->state & (s)) == (s))
#define WIIMOTE_IS_CONNECTED(wm) (WIIMOTE_IS_SET(wm, WIIMOTE_STATE_CONNECTED))
/** @} */

/** @name LED bit masks */
/** @{ */
#define WIIMOTE_LED_NONE 0x00
#define WIIMOTE_LED_1    0x10
#define WIIMOTE_LED_2    0x20
#define WIIMOTE_LED_3    0x40
#define WIIMOTE_LED_4    0x80
/** @} */

/** @name Button codes */
/** @{ */
#define WIIMOTE_BUTTON_TWO         0x0001
#define WIIMOTE_BUTTON_ONE         0x0002
#define WIIMOTE_BUTTON_B           0x0004
#define WIIMOTE_BUTTON_A           0x0008
#define WIIMOTE_BUTTON_MINUS       0x0010
#define WIIMOTE_BUTTON_ZACCEL_BIT6 0x0020
#define WIIMOTE_BUTTON_ZACCEL_BIT7 0x0040
#define WIIMOTE_BUTTON_HOME        0x0080
#define WIIMOTE_BUTTON_LEFT        0x0100
#define WIIMOTE_BUTTON_RIGHT       0x0200
#define WIIMOTE_BUTTON_DOWN        0x0400
#define WIIMOTE_BUTTON_UP          0x0800
#define WIIMOTE_BUTTON_PLUS        0x1000
#define WIIMOTE_BUTTON_ZACCEL_BIT4 0x2000
#define WIIMOTE_BUTTON_ZACCEL_BIT5 0x4000
#define WIIMOTE_BUTTON_UNKNOWN     0x8000
#define WIIMOTE_BUTTON_ALL         0x1F9F
/** @} */

/** @name Nunchuk button codes */
/** @{ */
#define NUNCHUK_BUTTON_Z   0x01
#define NUNCHUK_BUTTON_C   0x02
#define NUNCHUK_BUTTON_ALL 0x03
/** @} */

/** @name Classic controller button codes */
/** @{ */
#define CLASSIC_CTRL_BUTTON_UP     0x0001
#define CLASSIC_CTRL_BUTTON_LEFT   0x0002
#define CLASSIC_CTRL_BUTTON_ZR     0x0004
#define CLASSIC_CTRL_BUTTON_X      0x0008
#define CLASSIC_CTRL_BUTTON_A      0x0010
#define CLASSIC_CTRL_BUTTON_Y      0x0020
#define CLASSIC_CTRL_BUTTON_B      0x0040
#define CLASSIC_CTRL_BUTTON_ZL     0x0080
#define CLASSIC_CTRL_BUTTON_FULL_R 0x0200
#define CLASSIC_CTRL_BUTTON_PLUS   0x0400
#define CLASSIC_CTRL_BUTTON_HOME   0x0800
#define CLASSIC_CTRL_BUTTON_MINUS  0x1000
#define CLASSIC_CTRL_BUTTON_FULL_L 0x2000
#define CLASSIC_CTRL_BUTTON_DOWN   0x4000
#define CLASSIC_CTRL_BUTTON_RIGHT  0x8000
#define CLASSIC_CTRL_BUTTON_ALL    0xFEFF
/** @} */

/** @name Guitar Hero 3 button codes */
/** @{ */
#define GUITAR_HERO_3_BUTTON_STRUM_UP   0x0001
#define GUITAR_HERO_3_BUTTON_YELLOW     0x0008
#define GUITAR_HERO_3_BUTTON_GREEN      0x0010
#define GUITAR_HERO_3_BUTTON_BLUE       0x0020
#define GUITAR_HERO_3_BUTTON_RED        0x0040
#define GUITAR_HERO_3_BUTTON_ORANGE     0x0080
#define GUITAR_HERO_3_BUTTON_PLUS       0x0400
#define GUITAR_HERO_3_BUTTON_MINUS      0x1000
#define GUITAR_HERO_3_BUTTON_STRUM_DOWN 0x4000
#define GUITAR_HERO_3_BUTTON_ALL        0xFEFF
/** @} */

/** @name Wiimote option flags */
/** @{ */
#define WIIUSE_SMOOTHING     0x01
#define WIIUSE_CONTINUOUS    0x02
#define WIIUSE_ORIENT_THRESH 0x04
#define WIIUSE_INIT_FLAGS (WIIUSE_SMOOTHING | WIIUSE_ORIENT_THRESH)

#define WIIUSE_ORIENT_PRECISION 100.0f
/** @} */

/** @name Expansion codes */
/** @{ */
#define EXP_NONE 0
#define EXP_NUNCHUK 1
#define EXP_CLASSIC 2
#define EXP_GUITAR_HERO_3 3
#define EXP_WII_BOARD 4
#define EXP_MOTION_PLUS 5
#define EXP_MOTION_PLUS_NUNCHUK 6 /* Motion+ in nunchuk pass-through mode */
#define EXP_MOTION_PLUS_CLASSIC 7 /* Motion+ in classic ctr. pass-through mode */
/** @} */

/** @brief IR correction types */
typedef enum ir_position_t { WIIUSE_IR_ABOVE, WIIUSE_IR_BELOW } ir_position_t;

/** @name Device Inquiry Macros */
/** @{ */
/**
 *	@brief Check if a button is pressed.
 *	@param dev		Pointer to a wiimote_t or expansion structure.
 *	@param button	The button you are interested in.
 *	@return 1 if the button is pressed, 0 if not.
 */
#define IS_PRESSED(dev, button) ((dev->btns & button) == button)

/**
 *	@brief Check if a button is being held.
 *	@param dev		Pointer to a wiimote_t or expansion structure.
 *	@param button	The button you are interested in.
 *	@return 1 if the button is held, 0 if not.
 */
#define IS_HELD(dev, button) ((dev->btns_held & button) == button)

/**
 *	@brief Check if a button is released on this event.					\n\n
 *			This does not mean the button is not pressed, it means		\n
 *			this button was just now released.
 *	@param dev		Pointer to a wiimote_t or expansion structure.
 *	@param button	The button you are interested in.
 *	@return 1 if the button is released, 0 if not.
 *
 */
#define IS_RELEASED(dev, button) ((dev->btns_released & button) == button)

/**
 *	@brief Check if a button has just been pressed this event.
 *	@param dev		Pointer to a wiimote_t or expansion structure.
 *	@param button	The button you are interested in.
 *	@return 1 if the button is pressed, 0 if not.
 */
#define IS_JUST_PRESSED(dev, button) (IS_PRESSED(dev, button) && !IS_HELD(dev, button))

/**
 *	@brief Return the IR sensitivity level.
 *	@param wm		Pointer to a wiimote_t structure.
 *	@param lvl		[out] Pointer to an int that will hold the level setting.
 *	If no level is set 'lvl' will be set to 0.
 */
#define WIIUSE_GET_IR_SENSITIVITY(wm, lvl)       \
    do                                           \
    {                                            \
        if ((wm->state & 0x0200) == 0x0200)      \
            *lvl = 1;                            \
        else if ((wm->state & 0x0400) == 0x0400) \
            *lvl = 2;                            \
        else if ((wm->state & 0x0800) == 0x0800) \
            *lvl = 3;                            \
        else if ((wm->state & 0x1000) == 0x1000) \
            *lvl = 4;                            \
        else if ((wm->state & 0x2000) == 0x2000) \
            *lvl = 5;                            \
        else                                     \
            *lvl = 0;                            \
    } while (0)

#define WIIUSE_USING_ACC(wm)     ((wm->state & 0x020) == 0x020)
#define WIIUSE_USING_EXP(wm)     ((wm->state & 0x040) == 0x040)
#define WIIUSE_USING_IR(wm)      ((wm->state & 0x080) == 0x080)
#define WIIUSE_USING_SPEAKER(wm) ((wm->state & 0x100) == 0x100)

#define WIIUSE_IS_LED_SET(wm, num) ((wm->leds & WIIMOTE_LED_##num) == WIIMOTE_LED_##num)
/** @} */

/*
 *	This is left over from an old hack, but it may actually
 *	be a useful feature to keep so it wasn't removed.
 */
#ifdef WIIUSE_WIN32
#define WIIMOTE_DEFAULT_TIMEOUT 10
#define WIIMOTE_EXP_TIMEOUT 10
#endif

#define WIIUSE_SYNC_HANDSHAKE

typedef unsigned char byte;
typedef char sbyte;

struct wiimote_t;
struct vec3b_t;
struct orient_t;
struct gforce_t;

/**
 *      @brief Callback that handles a read event.
 *
 *      @param wm               Pointer to a wiimote_t structure.
 *      @param data             Pointer to the filled data block.
 *      @param len              Length in bytes of the data block.
 *
 *      @see wiiuse_init()
 *
 *      A registered function of this type is called automatically by the wiiuse
 *      library when the wiimote has returned the full data requested by a previous
 *      call to wiiuse_read_data().
 */
typedef void (*wiiuse_read_cb)(struct wiimote_t *wm, byte *data, uint16_t len);

/**
 *	@brief Data read request structure.
 */
struct read_req_t
{
    wiiuse_read_cb cb; /**< read data callback
                          */
    byte *buf;         /**< buffer where read data is written							*/
    uint32_t addr;     /**< the offset that the read started at						*/
    uint16_t size; /**< the length of the data read */
    uint16_t wait; /**< num bytes still needed to finish read						*/
    byte dirty;    /**< set to 1 if not using callback and needs to be cleaned up	*/

    struct read_req_t
        *next; /**< next read request in the queue */
};

/**
 *  @struct ang3s_t
 *  @brief Roll/Pitch/Yaw short angles.
 */
typedef struct ang3s_t
{
    int16_t roll, pitch, yaw;
} ang3s_t;

/**
 *  @struct ang3f_t
 *  @brief Roll/Pitch/Yaw float angles.
 */
typedef struct ang3f_t
{
    float roll, pitch, yaw;
} ang3f_t;

/**
 *	@brief Unsigned x,y byte vector.
 */
typedef struct vec2b_t
{
    byte x, y;
} vec2b_t;

/**
 *	@brief Unsigned x,y,z byte vector.
 */
typedef struct vec3b_t
{
    byte x, y, z;
} vec3b_t;

/**
 *	@brief Signed x,y,z float struct.
 */
typedef struct vec3f_t
{
    float x, y, z;
} vec3f_t;

/**
 *	@brief Orientation struct.
 *
 *	Yaw, pitch, and roll range from -180 to 180 degrees.
 */
typedef struct orient_t
{
    float roll;  /**< roll, this may be smoothed if enabled	*/
    float pitch; /**< pitch, this may be smoothed if enabled	*/
    float yaw;

    float a_roll;  /**< absolute roll, unsmoothed				*/
    float a_pitch; /**< absolute pitch, unsmoothed				*/
} orient_t;

/**
 *	@brief Gravity force struct.
 */
typedef struct gforce_t
{
    float x, y, z;
} gforce_t;

/**
 *	@brief Accelerometer struct. For any device with an accelerometer.
 */
typedef struct accel_t
{
    struct vec3b_t cal_zero; /**< zero calibration					*/
    struct vec3b_t cal_g;    /**< 1g difference around 0cal			*/

    float st_roll;  /**< last smoothed roll value			*/
    float st_pitch; /**< last smoothed roll pitch			*/
    float st_alpha; /**< alpha value for smoothing [0-1]	*/
} accel_t;

/**
 *	@brief A single IR source.
 */
typedef struct ir_dot_t
{
    byte visible; /**< if the IR source is visible		*/

    unsigned int x; /**< interpolated X coordinate			*/
    unsigned int y; /**< interpolated Y coordinate			*/

    int16_t rx; /**< raw X coordinate (0-1023)			*/
    int16_t ry; /**< raw Y coordinate (0-767)			*/

    byte order; /**< increasing order by x-axis value	*/

    byte size; /**< size of the IR dot (0-15)			*/
} ir_dot_t;

/**
 *	@brief Screen aspect ratio.
 */
typedef enum aspect_t { WIIUSE_ASPECT_4_3, WIIUSE_ASPECT_16_9 } aspect_t;

/**
 *	@brief IR struct. Hold all data related to the IR tracking.
 */
typedef struct ir_t
{
    struct ir_dot_t dot[4]; /**< IR dots							*/
    byte num_dots;          /**< number of dots at this time		*/

    enum aspect_t aspect; /**< aspect ratio of the screen			*/

    enum ir_position_t pos; /**< IR sensor bar position				*/

    unsigned int vres[2]; /**< IR virtual screen resolution		*/
    int offset[2];        /**< IR XY correction offset			*/
    int state;            /**< keeps track of the IR state		*/

    int ax; /**< absolute X coordinate				*/
    int ay; /**< absolute Y coordinate				*/

    int x; /**< calculated X coordinate			*/
    int y; /**< calculated Y coordinate			*/

    float distance; /**< pixel distance between first 2 dots*/
    float z;        /**< calculated distance				*/
} ir_t;

/**
 *	@brief Joystick calibration structure.
 *
 *	The angle \a ang is relative to the positive y-axis into quadrant I
 *	and ranges from 0 to 360 degrees.  So if the joystick is held straight
 *	upwards then angle is 0 degrees.  If it is held to the right it is 90,
 *	down is 180, and left is 270.
 *
 *	The magnitude \a mag is the distance from the center to where the
 *	joystick is being held.  The magnitude ranges from 0 to 1.
 *	If the joystick is only slightly tilted from the center the magnitude
 *	will be low, but if it is closer to the outter edge the value will
 *	be higher.
 */
typedef struct joystick_t
{
    struct vec2b_t max;    /**< maximum joystick values	*/
    struct vec2b_t min;    /**< minimum joystick values	*/
    struct vec2b_t center; /**< center joystick values		*/

    float ang; /**< angle the joystick is being held		*/
    float mag; /**< magnitude of the joystick (range 0-1)	*/
    float x;   /**< horizontal position of the joystick (range [-1, 1]	*/
    float y;   /**< vertical position of the joystick (range [-1, 1]	*/
} joystick_t;

/**
 *	@brief Nunchuk expansion device.
 */
typedef struct nunchuk_t
{
    struct accel_t accel_calib; /**< nunchuk accelerometer calibration		*/
    struct joystick_t js;       /**< joystick calibration					*/

    int *flags; /**< options flag (points to wiimote_t.flags) */

    byte btns;          /**< what buttons have just been pressed	*/
    byte btns_held;     /**< what buttons are being held down		*/
    byte btns_released; /**< what buttons were just released this	*/

    float orient_threshold; /**< threshold for orient to generate an event */
    int accel_threshold;    /**< threshold for accel to generate an event */

    struct vec3b_t accel;   /**< current raw acceleration data			*/
    struct orient_t orient; /**< current orientation on each axis		*/
    struct gforce_t gforce; /**< current gravity forces on each axis	*/
} nunchuk_t;

/**
 *	@brief Classic controller expansion device.
 */
typedef struct classic_ctrl_t
{
    int16_t btns;          /**< what buttons have just been pressed	*/
    int16_t btns_held;     /**< what buttons are being held down		*/
    int16_t btns_released; /**< what buttons were just released this	*/

    float r_shoulder; /**< right shoulder button (range 0-1)		*/
    float l_shoulder; /**< left shoulder button (range 0-1)		*/

    struct joystick_t ljs; /**< left joystick calibration				*/
    struct joystick_t rjs; /**< right joystick calibration				*/
} classic_ctrl_t;

/**
 *	@brief Guitar Hero 3 expansion device.
 */
typedef struct guitar_hero_3_t
{
    int16_t btns;          /**< what buttons have just been pressed	*/
    int16_t btns_held;     /**< what buttons are being held down		*/
    int16_t btns_released; /**< what buttons were just released this	*/

    float whammy_bar; /**< whammy bar (range 0-1)					*/

    struct joystick_t js; /**< joystick calibration					*/
} guitar_hero_3_t;

/**
 * 	@brief Motion Plus expansion device
 */
typedef struct motion_plus_t
{
    byte ext; /**< is there a device on the pass-through port? */

    struct ang3s_t raw_gyro;        /**< current raw gyroscope data */
    struct ang3s_t cal_gyro;        /**< calibration raw gyroscope data */
    struct ang3f_t angle_rate_gyro; /**< current gyro angle rate */
    struct orient_t orient;         /**< current orientation on each axis using Motion Plus gyroscopes */
    byte acc_mode; /**< Fast/slow rotation mode for roll, pitch and yaw (0 if rotating fast, 1 if slow or
                      still) */
    int raw_gyro_threshold; /**< threshold for gyroscopes to generate an event */

    struct nunchuk_t *nc; /**< pointers to nunchuk & classic in pass-through-mode */
    struct classic_ctrl_t *classic;
} motion_plus_t;

/**
 *	@brief Wii Balance Board "expansion" device.
 *
 *  A Balance Board presents itself as a Wiimote with a permanently-attached
 *  Balance Board expansion device.
 */
typedef struct wii_board_t
{
    /** @name Interpolated weight per sensor (kg)
     *
     *  These are the values you're most likely to use.
     *
     *  See example.c for how to compute total weight and center of gravity
     *  from these values.
     */
    /** @{ */
    float tl;
    float tr;
    float bl;
    float br;
    /** @} */

    /** @name Raw sensor values */
    /** @{ */
    uint16_t rtl;
    uint16_t rtr;
    uint16_t rbl;
    uint16_t rbr;
    /** @} */

    /** @name Sensor calibration values */
    /** @{ */
    uint16_t ctl[3]; /* Calibration */
    uint16_t ctr[3];
    uint16_t cbl[3];
    uint16_t cbr[3]; /* /Calibration */
    /** @} */
    uint8_t update_calib;
    uint8_t use_alternate_report;
} wii_board_t;

/**
 *	@brief Generic expansion device plugged into wiimote.
 */
typedef struct expansion_t
{
    int type; /**< type of expansion attached				*/

    struct motion_plus_t mp;

    union
    {
        struct nunchuk_t nunchuk;
        struct classic_ctrl_t classic;
        struct guitar_hero_3_t gh3;
        struct wii_board_t wb;
    };
} expansion_t;

/**
 *	@brief	Available bluetooth stacks for Windows.
 */
typedef enum win_bt_stack_t { WIIUSE_STACK_UNKNOWN, WIIUSE_STACK_MS, WIIUSE_STACK_BLUESOLEIL } win_bt_stack_t;

/**
 *	@brief Significant data from the previous event.
 */
typedef struct wiimote_state_t
{
    /* expansion_t */
    float exp_ljs_ang;
    float exp_rjs_ang;
    float exp_ljs_mag;
    float exp_rjs_mag;
    uint16_t exp_btns;
    struct orient_t exp_orient;
    struct vec3b_t exp_accel;
    float exp_r_shoulder;
    float exp_l_shoulder;

    /* motion plus */
    short drx;
    short dry;
    short drz;

    /* wiiboard */
    uint16_t exp_wb_rtr;
    uint16_t exp_wb_rtl;
    uint16_t exp_wb_rbr;
    uint16_t exp_wb_rbl;

    /* ir_t */
    int ir_ax;
    int ir_ay;
    float ir_distance;

    struct orient_t orient;
    uint16_t btns;

    struct vec3b_t accel;
} wiimote_state_t;

/**
 *	@brief Events that wiiuse can generate from a poll.
 */
typedef enum WIIUSE_EVENT_TYPE {
    WIIUSE_NONE = 0,
    WIIUSE_EVENT,
    WIIUSE_STATUS,
    WIIUSE_CONNECT,
    WIIUSE_DISCONNECT,
    WIIUSE_UNEXPECTED_DISCONNECT,
    WIIUSE_READ_DATA,
    WIIUSE_WRITE_DATA,
    WIIUSE_NUNCHUK_INSERTED,
    WIIUSE_NUNCHUK_REMOVED,
    WIIUSE_CLASSIC_CTRL_INSERTED,
    WIIUSE_CLASSIC_CTRL_REMOVED,
    WIIUSE_GUITAR_HERO_3_CTRL_INSERTED,
    WIIUSE_GUITAR_HERO_3_CTRL_REMOVED,
    WIIUSE_WII_BOARD_CTRL_INSERTED,
    WIIUSE_WII_BOARD_CTRL_REMOVED,
    WIIUSE_MOTION_PLUS_ACTIVATED,
    WIIUSE_MOTION_PLUS_REMOVED
} WIIUSE_EVENT_TYPE;

/**
 *	@brief Type of wiimote peripheral
 */
typedef enum WIIUSE_WIIMOTE_TYPE {
    WIIUSE_WIIMOTE_REGULAR = 0,
    WIIUSE_WIIMOTE_MOTION_PLUS_INSIDE,
} WIIUSE_WIIMOTE_TYPE;

/**
 *	@brief Main Wiimote device structure.
 *
 *  You need one of these to do pretty much anything with this library.
 */
typedef struct wiimote_t
{
    int unid; /**< user specified id						*/

#ifdef WIIUSE_BLUEZ
    /** @name Linux-specific (BlueZ) members */
    /** @{ */
    char bdaddr_str[18]; /**< readable bt address					*/
    bdaddr_t bdaddr;     /**< bt address								*/
    int out_sock;        /**< output socket							*/
    int in_sock;         /**< input socket 							*/
                                /** @} */
#endif

#ifdef WIIUSE_WIN32
    /** @name Windows-specific members */
    /** @{ */
    HANDLE dev_handle;         /**< HID handle								*/
    OVERLAPPED hid_overlap;    /**< overlap handle							*/
    enum win_bt_stack_t stack; /**< type of bluetooth stack to use			*/
    int timeout;               /**< read timeout							*/
    byte normal_timeout;       /**< normal timeout							*/
    byte exp_timeout;          /**< timeout for expansion handshake		*/
                                      /** @} */
#endif

#ifdef WIIUSE_MAC
    /** @name Mac OS X-specific members */
    /** @{ */
    void *objc_wm; /**  WiiuseWiimote* as opaque pointer       */
                          /** @} */
#endif

    int state;           /**< various state flags					*/
    byte leds;           /**< currently lit leds						*/
    float battery_level; /**< battery level							*/

    int flags; /**< options flag							*/

#ifndef WIIUSE_SYNC_HANDSHAKE
    byte handshake_state; /**< the state of the connection handshake	*/
#endif
    byte expansion_state;        /**< the state of the expansion handshake	*/
    struct data_req_t *data_req; /**< list of data read requests				*/

    struct read_req_t *read_req; /**< list of data read requests				*/
    struct accel_t accel_calib;  /**< wiimote accelerometer calibration		*/
    struct expansion_t exp;      /**< wiimote expansion device				*/

    struct vec3b_t accel;   /**< current raw acceleration data			*/
    struct orient_t orient; /**< current orientation on each axis		*/
    struct gforce_t gforce; /**< current gravity forces on each axis	*/

    struct ir_t ir; /**< IR data								*/

    uint16_t btns;          /**< what buttons have just been pressed	*/
    uint16_t btns_held;     /**< what buttons are being held down		*/
    uint16_t btns_released; /**< what buttons were just released this	*/

    float orient_threshold;  /**< threshold for orient to generate an event */
    int32_t accel_threshold; /**< threshold for accel to generate an event */

    struct wiimote_state_t lstate; /**< last saved state						*/

    WIIUSE_EVENT_TYPE event; /**< type of event that occurred				*/
    byte motion_plus_id[6];
    WIIUSE_WIIMOTE_TYPE type;
} wiimote;

/** @brief Data passed to a callback during wiiuse_update() */
typedef struct wiimote_callback_data_t
{
    int uid;
    byte leds;
    float battery_level;
    struct vec3b_t accel;
    struct orient_t orient;
    struct gforce_t gforce;
    struct ir_t ir;
    uint16_t buttons;
    uint16_t buttons_held;
    uint16_t buttons_released;
    WIIUSE_EVENT_TYPE event;
    int state;
    struct expansion_t expansion;
} wiimote_callback_data_t;

/** @brief Callback type */
typedef void (*wiiuse_update_cb)(struct wiimote_callback_data_t *wm);

/**
 *      @brief Callback that handles a write event.
 *
 *      @param wm               Pointer to a wiimote_t structure.
 *      @param data             Pointer to the sent data block.
 *      @param len              Length in bytes of the data block.
 *
 *      @see wiiuse_init()
 *
 *      A registered function of this type is called automatically by the wiiuse
 *      library when the wiimote has returned the full data requested by a previous
 *      call to wiiuse_write_data().
 */
typedef void (*wiiuse_write_cb)(struct wiimote_t *wm, unsigned char *data, unsigned short len);

typedef enum data_req_s { REQ_READY = 0, REQ_SENT, REQ_DONE } data_req_s;

/**
 *	@struct data_req_t
 *	@brief Data write request structure.
 */
struct data_req_t
{

    byte data[21]; /**< buffer where read data is written						*/
    byte len;
    unsigned int addr;
    data_req_s state;   /**< set to 1 if not using callback and needs to be cleaned up	*/
    wiiuse_write_cb cb; /**< read data callback
                           */
    struct data_req_t *next;
};

/**
 *	@brief Loglevels supported by wiiuse.
 */
typedef enum wiiuse_loglevel {
    LOGLEVEL_ERROR   = 0,
    LOGLEVEL_WARNING = 1,
    LOGLEVEL_INFO    = 2,
    LOGLEVEL_DEBUG   = 3
} wiiuse_loglevel;

/*****************************************
 *
 *	Include API specific stuff
 *
 *****************************************/

#ifdef WIIUSE_WIN32
#ifdef WIIUSE_STATIC
#define WIIUSE_EXPORT_DECL
#define WIIUSE_IMPORT_DECL
#else
#define WIIUSE_EXPORT_DECL __declspec(dllexport)
#define WIIUSE_IMPORT_DECL __declspec(dllimport)
#endif
#else
#define WIIUSE_EXPORT_DECL
#define WIIUSE_IMPORT_DECL
#endif

#ifdef WIIUSE_COMPILE_LIB
#define WIIUSE_EXPORT WIIUSE_EXPORT_DECL
#else
#define WIIUSE_EXPORT WIIUSE_IMPORT_DECL
#endif

#ifdef __cplusplus
extern "C" {
#endif

/* wiiuse.c */
WIIUSE_EXPORT extern const char *wiiuse_version();

/** @brief Define indicating the presence of the feature allowing you to
 *  redirect output for one or more logging levels within the library.
 */
#define WIIUSE_HAS_OUTPUT_REDIRECTION
WIIUSE_EXPORT extern void wiiuse_set_output(enum wiiuse_loglevel loglevel, FILE *logtarget);

WIIUSE_EXPORT extern struct wiimote_t **wiiuse_init(int wiimotes);
WIIUSE_EXPORT extern void wiiuse_disconnected(struct wiimote_t *wm);
WIIUSE_EXPORT extern void wiiuse_cleanup(struct wiimote_t **wm, int wiimotes);
WIIUSE_EXPORT extern void wiiuse_rumble(struct wiimote_t *wm, int status);
WIIUSE_EXPORT extern void wiiuse_toggle_rumble(struct wiimote_t *wm);
WIIUSE_EXPORT extern void wiiuse_set_leds(struct wiimote_t *wm, int leds);
WIIUSE_EXPORT extern void wiiuse_motion_sensing(struct wiimote_t *wm, int status);
WIIUSE_EXPORT extern int wiiuse_read_data(struct wiimote_t *wm, byte *buffer, unsigned int offset,
                                          uint16_t len);
WIIUSE_EXPORT extern int wiiuse_write_data(struct wiimote_t *wm, unsigned int addr, const byte *data,
                                           byte len);
WIIUSE_EXPORT extern void wiiuse_status(struct wiimote_t *wm);
WIIUSE_EXPORT extern struct wiimote_t *wiiuse_get_by_id(struct wiimote_t **wm, int wiimotes, int unid);
WIIUSE_EXPORT extern int wiiuse_set_flags(struct wiimote_t *wm, int enable, int disable);
WIIUSE_EXPORT extern float wiiuse_set_smooth_alpha(struct wiimote_t *wm, float alpha);
WIIUSE_EXPORT extern void wiiuse_set_bluetooth_stack(struct wiimote_t **wm, int wiimotes,
                                                     enum win_bt_stack_t type);
WIIUSE_EXPORT extern void wiiuse_set_orient_threshold(struct wiimote_t *wm, float threshold);
WIIUSE_EXPORT extern void wiiuse_resync(struct wiimote_t *wm);
WIIUSE_EXPORT extern void wiiuse_set_timeout(struct wiimote_t **wm, int wiimotes, byte normal_timeout,
                                             byte exp_timeout);
WIIUSE_EXPORT extern void wiiuse_set_accel_threshold(struct wiimote_t *wm, int threshold);
WIIUSE_EXPORT extern void wiiuse_wiiboard_use_alternate_report(struct wiimote_t *wm, int enabled);

/* io.c */
WIIUSE_EXPORT extern int wiiuse_find(struct wiimote_t **wm, int max_wiimotes, int timeout);
WIIUSE_EXPORT extern int wiiuse_connect(struct wiimote_t **wm, int wiimotes);
WIIUSE_EXPORT extern void wiiuse_disconnect(struct wiimote_t *wm);

/* events.c */
WIIUSE_EXPORT extern int wiiuse_poll(struct wiimote_t **wm, int wiimotes);

/**
 *  @brief Poll Wiimotes, and call the provided callback with information
 *  on each Wiimote that had an event.
 *
 *  Alternative to calling wiiuse_poll yourself, and provides the same
 *  information struct on all platforms.
 *
 *  @return Number of wiimotes that had an event.
 */
WIIUSE_EXPORT extern int wiiuse_update(struct wiimote_t **wm, int wiimotes, wiiuse_update_cb callback);

/* ir.c */
WIIUSE_EXPORT extern void wiiuse_set_ir(struct wiimote_t *wm, int status);
WIIUSE_EXPORT extern void wiiuse_set_ir_vres(struct wiimote_t *wm, unsigned int x, unsigned int y);
WIIUSE_EXPORT extern void wiiuse_set_ir_position(struct wiimote_t *wm, enum ir_position_t pos);
WIIUSE_EXPORT extern void wiiuse_set_aspect_ratio(struct wiimote_t *wm, enum aspect_t aspect);
WIIUSE_EXPORT extern void wiiuse_set_ir_sensitivity(struct wiimote_t *wm, int level);

/* nunchuk.c */
WIIUSE_EXPORT extern void wiiuse_set_nunchuk_orient_threshold(struct wiimote_t *wm, float threshold);
WIIUSE_EXPORT extern void wiiuse_set_nunchuk_accel_threshold(struct wiimote_t *wm, int threshold);

/* wiiboard.c */
/* this function not currently implemented... */
WIIUSE_EXPORT extern void wiiuse_set_wii_board_calib(struct wiimote_t *wm);

WIIUSE_EXPORT extern void wiiuse_set_motion_plus(struct wiimote_t *wm, int status);

#ifdef __cplusplus
}
#endif

/** @} */

#endif /* WIIUSE_H_INCLUDED */
