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/****************************************************************************/

/* Name : input.js */

/* purpose : Definition of const used to communicate with Linux */

/* controller driver */

/* Author : Alexandre Ribault */

/* Creation : 03/23/2024 */

/* Last update : 03/23/2024 */

/* Version : 1.0.0 */

/****************************************************************************/

/* */

/* DISPLAY OPTIMISED FOR NOTEPAD++ */

/* */

/****************************************************************************/

Porting of works of :

- Linus Groh , on python lib "xbox360controller"

https://github.com/linusg/xbox360controller

Thank to him!

Historic :

Version 1.0.0 :

Creation of the file input.js

/**************************************************/

/* */

/* DEPENDENCIES */

/* */

/**************************************************/

import * as ioctl_macros_and_constants from './ioctl_macros_and_constants.js'

import struct from 'python-struct'

/**************************************************/

/* */

/* Constants */

/* */

/**************************************************/

//Event 'Force Feedback'

// https://www.kernel.org/doc/html/v4.13/input/ff.html

export const EV_FF = 0x15

// https://github.com/torvalds/linux/blob/master/include/uapi/linux/input-event-codes.h#L342

export const BTN_MISC = 0x100

// https://github.com/torvalds/linux/blob/master/include/uapi/linux/input-event-codes.h#L365

export const BTN_TRIGGER = 0x120

export const BTN_THUMB = 0x121

export const BTN_THUMB2 = 0x122

export const BTN_TOP = 0x123

export const BTN_TOP2 = 0x124

export const BTN_PINKIE = 0x125

export const BTN_BASE = 0x126

export const BTN_BASE2 = 0x127

export const BTN_BASE3 = 0x128

export const BTN_BASE4 = 0x129

export const BTN_BASE5 = 0x12a

export const BTN_BASE6 = 0x12b

export const BTN_DEAD = 0x12f

export const BTN_SOUTH = 0x130

export const BTN_EAST = 0x131

export const BTN_C = 0x132

export const BTN_NORTH = 0x133

export const BTN_WEST = 0x134

export const BTN_Z = 0x135

export const BTN_TL = 0x136

export const BTN_TR = 0x137

export const BTN_TL2 = 0x138

export const BTN_TR2 = 0x139

export const BTN_SELECT = 0x13a

export const BTN_START = 0x13b

export const BTN_MODE = 0x13c

export const BTN_THUMBL = 0x13d

export const BTN_THUMBR = 0x13e

export const BTN_B = BTN_EAST

export const BTN_X = BTN_NORTH

export const BTN_Y = BTN_WEST

export const BTN_A = BTN_SOUTH

// https://github.com/torvalds/linux/blob/master/include/uapi/linux/input-event-codes.h#L717

export const ABS_X = 0x00

export const ABS_Y = 0x01

export const ABS_Z = 0x02

export const ABS_RX = 0x03

export const ABS_RY = 0x04

export const ABS_RZ = 0x05

export const ABS_THROTTLE = 0x06

export const ABS_RUDDER = 0x07

export const ABS_WHEEL = 0x08

export const ABS_GAS = 0x09

export const ABS_BRAKE = 0x0a

export const ABS_HAT0X = 0x10

export const ABS_HAT0Y = 0x11

export const ABS_HAT1X = 0x12

export const ABS_HAT1Y = 0x13

export const ABS_HAT2X = 0x14

export const ABS_HAT2Y = 0x15

export const ABS_HAT3X = 0x16

export const ABS_HAT3Y = 0x17

export const ABS_PRESSURE = 0x18

export const ABS_DISTANCE = 0x19

export const ABS_TILT_X = 0x1a

export const ABS_TILT_Y = 0x1b

export const ABS_TOOL_WIDTH = 0x1c

export const ABS_VOLUME = 0x20

export const ABS_MISC = 0x28

export const EVIOCSFF = ioctl_macros_and_constants._IOW('E', 0x80, 48) //48

/****************************************************/

/* */

/* FUNCTIONS */

/* */

/****************************************************/

/* Name :EVIOCGBIT */

/* Purpose :determine the types of features/event */

/* supported by any particular device */

/* Input(s) */

/* - {Number} event */

/* - {Number} length */

/* Output(s) */

/* - {Number} */

/****************************************************/

/**

* @param {Number} event

* @param {Number} length

* @returns {Number} -1 if error, 0 or positive number in case of success

export function EVIOCGBIT(event, length){

return ioctl_macros_and_constants._IOC(ioctl_macros_and_constants._IOC_READ , 'E', 0x20 + event, length) // 69 -> Ascii code for 'E'

}

/**

* @param {Number} type_

* @param {Number} id_

* @param {Number} replay_lenght

* @param {Number} replay_delay

* @param {Number} strong_magnitude

* @param {Number} weak_magnitude

* @returns {struct} it's a Byte array which contains the values of all the functions parameters

// port from https://github.com/torvalds/linux/blob/master/include/uapi/linux/input.h#L433

export function ff_effect(type_, id_, replay_lenght, replay_delay, strong_magnitude,weak_magnitude){

// to better understand the string '2h6x2h2x2H28x', please check the python's Struct Library documentation at : https://docs.python.org/3/library/struct.html

// The can analysed this way :

// 2h => Buffer must contains at least the size to code 2 "h" variable. A "h" variable is a "short" which needs 2 Bytes to be coded. We need 2 h -> We need 4 Bytes

// 6x => Buffer must contains at least the size to 'code' 2 "x" variable. A "x" variable is an unused byte. We need 6 x -> We need 6 Bytes

// 2h => Buffer must contains at least the size to code 2 "h" variable. A "h" variable is a "short" which needs 2 Bytes to be coded. We need 2 h -> We need 4 Bytes

// 2x => Buffer must contains at least the size to 'code' 2 "x" variable. A "x" variable is an unused byte. We need 2 x -> We need 2 Bytes

// 2H => Buffer must contains at least the size to code 2 "H" variable. A "H" variable is an " unsigned short" which needs 2 Bytes to be coded. We need 2 H -> We need 4 Bytes

// 28x => Buffer must contains at least the size to 'code' 28 "x" variable. A "x" variable is an unused byte. We need 28 x -> We need 28 Bytes

// type_ is a long

// id_ is a long

// replay_lenght is a short

// replay_delay is a short

// strong_magnitude is an unsigned short

// weak_magnitude is an unsigned short

return struct.pack('2h6x2h2x2H28x', type_, id_, replay_lenght, replay_delay, strong_magnitude, weak_magnitude)

}

/**

* @param {Number} type_

* @param {Number} code

* @param {Number} value

* @param {Number} tv_sec

* @param {Number} tv_usec

* @returns {struct} it's a Byte array which contains the values of all the functions parameters

//port from https://github.com/torvalds/linux/blob/master/include/uapi/linux/input.h#L26

export function input_event(type_, code, value, tv_sec=0, tv_usec=0){

// to better understand the string '2q2hi', please check the python's Struct Library documentation at : https://docs.python.org/3/library/struct.html

// The can analysed this way :

// 2q => Buffer must contains at least the size to code 2 "q" variable. A "q" variable is a "long long" which needs 8 Bytes to be coded. We need 2 q -> We need 16 Bytes

// 2h => Buffer must contains at least the size to code 2 "l" variable. A "q" variable is a "long" which needs 4 Bytes to be coded. We need 2 l -> We need 8 Bytes

// i => Buffer must contains at least the size to code 1 "i" variable. A "i" variable is a "int" which needs 4 Bytes to be coded. We need 1 i -> We need 4 Bytes

// tv_sec is a long long

// tv_usec is a long long

// type_ is a long

// code is a long

// value is a int

return struct.pack('2q2hi', tv_sec, tv_usec, type_, code, value)

}

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