ps2_NeutralTranslator.h

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/*
Copyright (C) 2017 Steve Benz <s8878992@hotmail.com>
The defines under KeyCode were originally written here, https://github.com/techpaul/PS2KeyAdvanced/blob/master/src/PS2KeyAdvanced.h, by Paul Carpenter

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library 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
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
USA
*/

#pragma once
#include "ps2_KeyboardOutput.h"

namespace ps2
{
    enum KeyCode : uint16_t {
        PS2_NONE = 0x0,

        /* Flags/bit masks for status bits in returned unsigned int value */
        PS2_SHIFT   = 0x4000,
        PS2_CTRL    = 0x2000,
        PS2_ALT      = 0x800,
        PS2_GUI      = 0x200,

        PS2_MODIFIERS = 0xff00,

        /* Returned keycode definitions */
        /* Do NOT change these codings as you will break base
        functionality use PS2KeyMap for that and internationalisation */
        PS2_KEY_NUM         = 0x01,
        PS2_KEY_SCROLL      = 0x02,
        PS2_KEY_CAPS        = 0x03,
        PS2_KEY_PRTSCR      = 0x04,
        PS2_KEY_PAUSE       = 0x05,
        PS2_KEY_L_SHIFT     = 0x06,
        PS2_KEY_R_SHIFT     = 0x07,
        PS2_KEY_L_CTRL      = 0x08,
        PS2_KEY_R_CTRL      = 0x09,
        PS2_KEY_L_ALT       = 0x0A,
        PS2_KEY_R_ALT       = 0x0B,
        /* Sometimes called windows key */
        PS2_KEY_L_GUI       = 0x0C,
        PS2_KEY_R_GUI       = 0x0D,
        PS2_KEY_MENU        = 0x0E,
        /* Break is CTRL + PAUSE generated inside keyboard */
        PS2_KEY_BREAK       = 0x0F,
        /* Generated by some keyboards by ALT and PRTSCR */
        PS2_KEY_SYSRQ       = 0x10,
        PS2_KEY_HOME        = 0x11,
        PS2_KEY_END         = 0x12,
        PS2_KEY_PGUP        = 0x13,
        PS2_KEY_PGDN        = 0x14,
        PS2_KEY_L_ARROW     = 0x15,
        PS2_KEY_R_ARROW     = 0x16,
        PS2_KEY_UP_ARROW    = 0x17,
        PS2_KEY_DN_ARROW    = 0x18,
        PS2_KEY_INSERT      = 0x19,
        PS2_KEY_DELETE      = 0x1A,
        PS2_KEY_ESC         = 0x1B,
        PS2_KEY_BS          = 0x1C,
        PS2_KEY_TAB         = 0x1D,
        PS2_KEY_ENTER       = 0x1E,
        PS2_KEY_SPACE       = 0x1F,
        PS2_KEY_KP0         = 0x20,
        PS2_KEY_KP1         = 0x21,
        PS2_KEY_KP2         = 0x22,
        PS2_KEY_KP3         = 0x23,
        PS2_KEY_KP4         = 0x24,
        PS2_KEY_KP5         = 0x25,
        PS2_KEY_KP6         = 0x26,
        PS2_KEY_KP7         = 0x27,
        PS2_KEY_KP8         = 0x28,
        PS2_KEY_KP9         = 0x29,
        PS2_KEY_KP_DOT      = 0x2A,
        PS2_KEY_KP_ENTER    = 0x2B,
        PS2_KEY_KP_PLUS     = 0x2C,
        PS2_KEY_KP_MINUS    = 0x2D,
        PS2_KEY_KP_TIMES    = 0x2E,
        PS2_KEY_KP_DIV      = 0x2F,
        PS2_KEY_0           = 0x30,
        PS2_KEY_1           = 0x31,
        PS2_KEY_2           = 0x32,
        PS2_KEY_3           = 0x33,
        PS2_KEY_4           = 0x34,
        PS2_KEY_5           = 0x35,
        PS2_KEY_6           = 0x36,
        PS2_KEY_7           = 0x37,
        PS2_KEY_8           = 0x38,
        PS2_KEY_9           = 0x39,
        PS2_KEY_APOS        = 0x3A, // '
        PS2_KEY_COMMA       = 0x3B,
        PS2_KEY_MINUS       = 0x3C,
        PS2_KEY_DOT         = 0x3D,
        PS2_KEY_DIV         = 0x3E,
        /* Some Numeric keyboards have an '=' on right keypad */
        PS2_KEY_KP_EQUAL    = 0x3F,
        PS2_KEY_SINGLE      = 0x40, // `
        PS2_KEY_A           = 0x41,
        PS2_KEY_B           = 0x42,
        PS2_KEY_C           = 0x43,
        PS2_KEY_D           = 0x44,
        PS2_KEY_E           = 0x45,
        PS2_KEY_F           = 0x46,
        PS2_KEY_G           = 0x47,
        PS2_KEY_H           = 0x48,
        PS2_KEY_I           = 0x49,
        PS2_KEY_J           = 0x4A,
        PS2_KEY_K           = 0x4B,
        PS2_KEY_L           = 0x4C,
        PS2_KEY_M           = 0x4D,
        PS2_KEY_N           = 0x4E,
        PS2_KEY_O           = 0x4F,
        PS2_KEY_P           = 0x50,
        PS2_KEY_Q           = 0x51,
        PS2_KEY_R           = 0x52,
        PS2_KEY_S           = 0x53,
        PS2_KEY_T           = 0x54,
        PS2_KEY_U           = 0x55,
        PS2_KEY_V           = 0x56,
        PS2_KEY_W           = 0x57,
        PS2_KEY_X           = 0x58,
        PS2_KEY_Y           = 0x59,
        PS2_KEY_Z           = 0x5A,
        PS2_KEY_SEMI        = 0x5B,
        PS2_KEY_BACK        = 0x5C,
        PS2_KEY_OPEN_SQ     = 0x5D,
        PS2_KEY_CLOSE_SQ    = 0x5E,
        PS2_KEY_EQUAL       = 0x5F,
        /* Some Numeric keypads have a comma key */
        PS2_KEY_KP_COMMA    = 0x60,
        PS2_KEY_F1          = 0x61,
        PS2_KEY_F2          = 0x62,
        PS2_KEY_F3          = 0x63,
        PS2_KEY_F4          = 0x64,
        PS2_KEY_F5          = 0x65,
        PS2_KEY_F6          = 0x66,
        PS2_KEY_F7          = 0x67,
        PS2_KEY_F8          = 0x68,
        PS2_KEY_F9          = 0x69,
        PS2_KEY_F10         = 0x6A,
        PS2_KEY_F11         = 0x6B,
        PS2_KEY_F12         = 0x6C,
        PS2_KEY_F13         = 0x6D,
        PS2_KEY_F14         = 0x6E,
        PS2_KEY_F15         = 0x6F,
        PS2_KEY_F16         = 0x70,
        PS2_KEY_F17         = 0x71,
        PS2_KEY_F18         = 0x72,
        PS2_KEY_F19         = 0x73,
        PS2_KEY_F20         = 0x74,
        PS2_KEY_F21         = 0x75,
        PS2_KEY_F22         = 0x76,
        PS2_KEY_F23         = 0x77,
        PS2_KEY_F24         = 0x78,
        PS2_KEY_NEXT_TR     = 0x79,
        PS2_KEY_PREV_TR     = 0x7A,
        PS2_KEY_STOP        = 0x7B,
        PS2_KEY_PLAY        = 0x7C,
        PS2_KEY_MUTE        = 0x7D,
        PS2_KEY_VOL_UP      = 0x7E,
        PS2_KEY_VOL_DN      = 0x7F,
        PS2_KEY_MEDIA       = 0x80,
        PS2_KEY_EMAIL       = 0x81,
        PS2_KEY_CALC        = 0x82,
        PS2_KEY_COMPUTER    = 0x83,
        PS2_KEY_WEB_SEARCH  = 0x84,
        PS2_KEY_WEB_HOME    = 0x85,
        PS2_KEY_WEB_BACK    = 0x86,
        PS2_KEY_WEB_FORWARD = 0x87,
        PS2_KEY_WEB_STOP    = 0x88,
        PS2_KEY_WEB_REFRESH = 0x89,
        PS2_KEY_WEB_FAVOR   = 0x8A,
        PS2_KEY_EUROPE2     = 0x8B,
        PS2_KEY_POWER       = 0x8C,
        PS2_KEY_SLEEP       = 0x8D,
        PS2_KEY_WAKE        = 0x90,
        PS2_KEY_INTL1       = 0x91,
        PS2_KEY_INTL2       = 0x92,
        PS2_KEY_INTL3       = 0x93,
        PS2_KEY_INTL4       = 0x94,
        PS2_KEY_INTL5       = 0x95,
        PS2_KEY_LANG1       = 0x96,
        PS2_KEY_LANG2       = 0x97,
        PS2_KEY_LANG3       = 0x98,
        PS2_KEY_LANG4       = 0x99,
        PS2_KEY_LANG5       = 0xA0,
    };
    inline KeyCode operator |(KeyCode code, KeyCode modifiers) { return (KeyCode)((uint16_t)code | (uint16_t)modifiers); }
    inline KeyCode operator &(KeyCode code, KeyCode modifiers) { return (KeyCode)((uint16_t)code & (uint16_t)modifiers); }
    inline KeyCode &operator |=(KeyCode &code, KeyCode modifiers) { return code = (KeyCode)((uint16_t)code | (uint16_t)modifiers); }
    inline KeyCode &operator &=(KeyCode &code, KeyCode modifiers) { return code = (KeyCode)((uint16_t)code & (uint16_t)modifiers); }
    inline KeyCode operator ~(KeyCode code) { return (KeyCode)(~(uint16_t)code); }


    class NeutralTranslator {
        bool isUnmake : 1;
        bool isExtended : 1;
        bool isExtended1 : 1;
        bool haveGotExtended1FirstByte : 1;
        KeyCode modifiers = PS2_NONE;

    public:
        NeutralTranslator() { }

        KeyCode translatePs2Keycode(KeyboardOutput code) {
            KeyCode result = PS2_NONE;
            if (code == KeyboardOutput::none) {
                return PS2_NONE;
            }
            if (code == KeyboardOutput::unmake) {
                this->isUnmake = true;
                return PS2_NONE;
            }
            if (code == KeyboardOutput::extend) {
                this->isExtended = true;
                return PS2_NONE;
            }
            if (code == KeyboardOutput::extend1) {
                this->isExtended1 = true;
                return PS2_NONE;
            }

            if (this->isExtended1) {
                if (!this->haveGotExtended1FirstByte) {
                    this->haveGotExtended1FirstByte = true;
                    // Don't care about the actual content of the thing, because, oddly, there's only one
                    //   key that uses Extended-1 mode
                    return PS2_NONE;
                }
                if (!this->isUnmake) {
                    result = KeyCode::PS2_KEY_BREAK;
                }
                this->reset();
                return result;
            }

            KeyCode modifier = this->translateModifier(code);
            if (modifier != KeyCode::PS2_NONE) {
                if (this->isUnmake) {
                    this->modifiers &= ~modifier;
                }
                else {
                    this->modifiers |= modifier;
                }
                this->reset();
                return PS2_NONE;
            }

            if (this->isUnmake) {
                if (this->isExtended1 && !this->haveGotExtended1FirstByte) {
                    this->haveGotExtended1FirstByte = true;
                }
                else {
                    this->reset();
                }
                // Don't care about unmake
                return PS2_NONE;
            }

            KeyCode translatedCode = this->isExtended
                ? translateExtended(code)
                : translateNonExtended(code);
            if (translatedCode != PS2_NONE) {
                result = translatedCode | this->modifiers;
            }

            this->reset();
            return result;
        }

        void reset()
        {
            this->isUnmake = false;
            this->isExtended = false;
            this->isExtended1 = false;
            this->haveGotExtended1FirstByte = false;
        }

    private:
        KeyCode translateModifier(KeyboardOutput inputCode)
        {
            switch (inputCode) {
                case KeyboardOutput::sc2_leftShift: return KeyCode::PS2_SHIFT;
                case KeyboardOutput::sc2_rightShift: return KeyCode::PS2_SHIFT;
                case KeyboardOutput::sc2_leftCtrl: return KeyCode::PS2_CTRL;
                case KeyboardOutput::sc2_leftAlt: return KeyCode::PS2_ALT;
                case KeyboardOutput::sc2ex_leftGui: return KeyCode::PS2_GUI;
                case KeyboardOutput::sc2ex_rightGui: return KeyCode::PS2_GUI;
                default: return KeyCode::PS2_NONE;
            }
        }

        KeyCode translateNonExtended(KeyboardOutput inputCode)
        {
            // This switch statements might make a bad bargain - they trade
            //  time-efficiency for program size.
            switch (inputCode) {
                case KeyboardOutput::sc2_numLock: return KeyCode::PS2_KEY_NUM;
                case KeyboardOutput::sc2_scrollLock: return KeyCode::PS2_KEY_SCROLL;
                case KeyboardOutput::sc2_capsLock: return KeyCode::PS2_KEY_CAPS;
                case KeyboardOutput::sc2_leftShift: return KeyCode::PS2_KEY_L_SHIFT;
                case KeyboardOutput::sc2_rightShift: return KeyCode::PS2_KEY_R_SHIFT;
                case KeyboardOutput::sc2_leftCtrl: return KeyCode::PS2_KEY_L_CTRL;
                case KeyboardOutput::sc2_leftAlt: return KeyCode::PS2_KEY_L_ALT;
                case KeyboardOutput::sc2_sysRequest: return KeyCode::PS2_KEY_SYSRQ;
                case KeyboardOutput::sc2_esc: return KeyCode::PS2_KEY_ESC;
                case KeyboardOutput::sc2_backslash: return KeyCode::PS2_KEY_BACK;
                case KeyboardOutput::sc2_tab: return KeyCode::PS2_KEY_TAB;
                case KeyboardOutput::sc2_enter: return KeyCode::PS2_KEY_ENTER;
                case KeyboardOutput::sc2_space: return KeyCode::PS2_KEY_SPACE;
                case KeyboardOutput::sc2_keypad0: return KeyCode::PS2_KEY_KP0;
                case KeyboardOutput::sc2_keypad1: return KeyCode::PS2_KEY_KP1;
                case KeyboardOutput::sc2_keypad2: return KeyCode::PS2_KEY_KP2;
                case KeyboardOutput::sc2_keypad3: return KeyCode::PS2_KEY_KP3;
                case KeyboardOutput::sc2_keypad4: return KeyCode::PS2_KEY_KP4;
                case KeyboardOutput::sc2_keypad5: return KeyCode::PS2_KEY_KP5;
                case KeyboardOutput::sc2_keypad6: return KeyCode::PS2_KEY_KP6;
                case KeyboardOutput::sc2_keypad7: return KeyCode::PS2_KEY_KP7;
                case KeyboardOutput::sc2_keypad8: return KeyCode::PS2_KEY_KP8;
                case KeyboardOutput::sc2_keypad9: return KeyCode::PS2_KEY_KP9;
                case KeyboardOutput::sc2_keypadPeriod: return KeyCode::PS2_KEY_KP_DOT;
                case KeyboardOutput::sc2_keypadPlus: return KeyCode::PS2_KEY_KP_PLUS;
                case KeyboardOutput::sc2_keypadDash: return KeyCode::PS2_KEY_KP_MINUS;
                case KeyboardOutput::sc2_keypadAsterisk: return KeyCode::PS2_KEY_KP_TIMES;
                case KeyboardOutput::sc2_KeypadEquals: return KeyCode::PS2_KEY_KP_EQUAL;
                case KeyboardOutput::sc2_0: return KeyCode::PS2_KEY_0;
                case KeyboardOutput::sc2_1: return KeyCode::PS2_KEY_1;
                case KeyboardOutput::sc2_2: return KeyCode::PS2_KEY_2;
                case KeyboardOutput::sc2_3: return KeyCode::PS2_KEY_3;
                case KeyboardOutput::sc2_4: return KeyCode::PS2_KEY_4;
                case KeyboardOutput::sc2_5: return KeyCode::PS2_KEY_5;
                case KeyboardOutput::sc2_6: return KeyCode::PS2_KEY_6;
                case KeyboardOutput::sc2_7: return KeyCode::PS2_KEY_7;
                case KeyboardOutput::sc2_8: return KeyCode::PS2_KEY_8;
                case KeyboardOutput::sc2_9: return KeyCode::PS2_KEY_9;
                case KeyboardOutput::sc2_apostrophe: return KeyCode::PS2_KEY_APOS;
                case KeyboardOutput::sc2_comma: return KeyCode::PS2_KEY_COMMA;
                case KeyboardOutput::sc2_dash: return KeyCode::PS2_KEY_MINUS;
                case KeyboardOutput::sc2_period: return KeyCode::PS2_KEY_DOT;
                case KeyboardOutput::sc2_forwardSlash: return KeyCode::PS2_KEY_DIV;
                case KeyboardOutput::sc2_openQuote: return KeyCode::PS2_KEY_SINGLE;
                case KeyboardOutput::sc2_a: return KeyCode::PS2_KEY_A;
                case KeyboardOutput::sc2_b: return KeyCode::PS2_KEY_B;
                case KeyboardOutput::sc2_c: return KeyCode::PS2_KEY_C;
                case KeyboardOutput::sc2_d: return KeyCode::PS2_KEY_D;
                case KeyboardOutput::sc2_e: return KeyCode::PS2_KEY_E;
                case KeyboardOutput::sc2_f: return KeyCode::PS2_KEY_F;
                case KeyboardOutput::sc2_g: return KeyCode::PS2_KEY_G;
                case KeyboardOutput::sc2_h: return KeyCode::PS2_KEY_H;
                case KeyboardOutput::sc2_i: return KeyCode::PS2_KEY_I;
                case KeyboardOutput::sc2_j: return KeyCode::PS2_KEY_J;
                case KeyboardOutput::sc2_k: return KeyCode::PS2_KEY_K;
                case KeyboardOutput::sc2_l: return KeyCode::PS2_KEY_L;
                case KeyboardOutput::sc2_m: return KeyCode::PS2_KEY_M;
                case KeyboardOutput::sc2_n: return KeyCode::PS2_KEY_N;
                case KeyboardOutput::sc2_o: return KeyCode::PS2_KEY_O;
                case KeyboardOutput::sc2_p: return KeyCode::PS2_KEY_P;
                case KeyboardOutput::sc2_q: return KeyCode::PS2_KEY_Q;
                case KeyboardOutput::sc2_r: return KeyCode::PS2_KEY_R;
                case KeyboardOutput::sc2_s: return KeyCode::PS2_KEY_S;
                case KeyboardOutput::sc2_t: return KeyCode::PS2_KEY_T;
                case KeyboardOutput::sc2_u: return KeyCode::PS2_KEY_U;
                case KeyboardOutput::sc2_v: return KeyCode::PS2_KEY_V;
                case KeyboardOutput::sc2_w: return KeyCode::PS2_KEY_W;
                case KeyboardOutput::sc2_x: return KeyCode::PS2_KEY_X;
                case KeyboardOutput::sc2_y: return KeyCode::PS2_KEY_Y;
                case KeyboardOutput::sc2_z: return KeyCode::PS2_KEY_Z;
                case KeyboardOutput::sc2_semicolon: return KeyCode::PS2_KEY_SEMI;
                case KeyboardOutput::sc2_backspace: return KeyCode::PS2_KEY_BS;
                case KeyboardOutput::sc2_openSquareBracket: return KeyCode::PS2_KEY_OPEN_SQ;
                case KeyboardOutput::sc2_closeSquareBracket: return KeyCode::PS2_KEY_CLOSE_SQ;
                case KeyboardOutput::sc2_equal: return KeyCode::PS2_KEY_EQUAL;
                case KeyboardOutput::sc2_europe2: return KeyCode::PS2_KEY_EUROPE2;
                case KeyboardOutput::sc2_f1: return KeyCode::PS2_KEY_F1;
                case KeyboardOutput::sc2_f2: return KeyCode::PS2_KEY_F2;
                case KeyboardOutput::sc2_f3: return KeyCode::PS2_KEY_F3;
                case KeyboardOutput::sc2_f4: return KeyCode::PS2_KEY_F4;
                case KeyboardOutput::sc2_f5: return KeyCode::PS2_KEY_F5;
                case KeyboardOutput::sc2_f6: return KeyCode::PS2_KEY_F6;
                case KeyboardOutput::sc2_f7: return KeyCode::PS2_KEY_F7;
                case KeyboardOutput::sc2_f8: return KeyCode::PS2_KEY_F8;
                case KeyboardOutput::sc2_f9: return KeyCode::PS2_KEY_F9;
                case KeyboardOutput::sc2_f10: return KeyCode::PS2_KEY_F10;
                case KeyboardOutput::sc2_f11: return KeyCode::PS2_KEY_F11;
                case KeyboardOutput::sc2_f12: return KeyCode::PS2_KEY_F12;
                case KeyboardOutput::sc2_f13: return KeyCode::PS2_KEY_F13;
                case KeyboardOutput::sc2_f14: return KeyCode::PS2_KEY_F14;
                case KeyboardOutput::sc2_f15: return KeyCode::PS2_KEY_F15;
                case KeyboardOutput::sc2_f16: return KeyCode::PS2_KEY_F16;
                case KeyboardOutput::sc2_f17: return KeyCode::PS2_KEY_F17;
                case KeyboardOutput::sc2_f18: return KeyCode::PS2_KEY_F18;
                case KeyboardOutput::sc2_f19: return KeyCode::PS2_KEY_F19;
                case KeyboardOutput::sc2_f20: return KeyCode::PS2_KEY_F20;
                case KeyboardOutput::sc2_f21: return KeyCode::PS2_KEY_F21;
                case KeyboardOutput::sc2_f22: return KeyCode::PS2_KEY_F22;
                case KeyboardOutput::sc2_f23: return KeyCode::PS2_KEY_F23;
                case KeyboardOutput::sc2_f24: return KeyCode::PS2_KEY_F24;
                case KeyboardOutput::sc2_keypadComma: return KeyCode::PS2_KEY_KP_COMMA;
                case KeyboardOutput::sc2_intl1: return KeyCode::PS2_KEY_INTL1;
                case KeyboardOutput::sc2_intl2: return KeyCode::PS2_KEY_INTL2;
                case KeyboardOutput::sc2_intl3: return KeyCode::PS2_KEY_INTL3;
                case KeyboardOutput::sc2_intl4: return KeyCode::PS2_KEY_INTL4;
                case KeyboardOutput::sc2_intl5: return KeyCode::PS2_KEY_INTL5;
                case KeyboardOutput::sc2_lang1: return KeyCode::PS2_KEY_LANG1;
                case KeyboardOutput::sc2_lang2: return KeyCode::PS2_KEY_LANG2;
                case KeyboardOutput::sc2_lang3: return KeyCode::PS2_KEY_LANG3;
                case KeyboardOutput::sc2_lang4: return KeyCode::PS2_KEY_LANG4;
                // case KeyboardOutput::sc2_LANG5: return KeyCode::PS2_KEY_LANG5;
                default: return KeyCode::PS2_NONE;
            };
        }
        
        KeyCode translateExtended(KeyboardOutput inputCode)
        {
            switch (inputCode) {
                case KeyboardOutput::sc2ex_printScreen: return KeyCode::PS2_KEY_PRTSCR;
                case KeyboardOutput::sc2ex_rightCtrl: return KeyCode::PS2_KEY_R_CTRL;
                case KeyboardOutput::sc2ex_rightAlt: return KeyCode::PS2_KEY_R_ALT;
                case KeyboardOutput::sc2ex_leftGui: return KeyCode::PS2_KEY_L_GUI;
                case KeyboardOutput::sc2ex_rightGui: return KeyCode::PS2_KEY_R_GUI;
                case KeyboardOutput::sc2ex_menu: return KeyCode::PS2_KEY_MENU;
                // case KeyboardOutput::sc2_BREAK: return KeyCode::PS2_KEY_BREAK; // <- This doesn't match up with how my keyboards work; I think it's an error
                case KeyboardOutput::sc2ex_home: return KeyCode::PS2_KEY_HOME;
                case KeyboardOutput::sc2ex_end: return KeyCode::PS2_KEY_END;
                case KeyboardOutput::sc2ex_pageUp: return KeyCode::PS2_KEY_PGUP;
                case KeyboardOutput::sc2ex_pageDown: return KeyCode::PS2_KEY_PGDN;
                case KeyboardOutput::sc2ex_leftArrow: return KeyCode::PS2_KEY_L_ARROW;
                case KeyboardOutput::sc2ex_rightArrow: return KeyCode::PS2_KEY_R_ARROW;
                case KeyboardOutput::sc2ex_upArrow: return KeyCode::PS2_KEY_UP_ARROW;
                case KeyboardOutput::sc2ex_downArrow: return KeyCode::PS2_KEY_DN_ARROW;
                case KeyboardOutput::sc2ex_insert: return KeyCode::PS2_KEY_INSERT;
                case KeyboardOutput::sc2ex_delete: return KeyCode::PS2_KEY_DELETE;
                case KeyboardOutput::sc2ex_keypadEnter: return KeyCode::PS2_KEY_KP_ENTER;
                case KeyboardOutput::sc2ex_keypadForwardSlash: return KeyCode::PS2_KEY_KP_DIV;
                case KeyboardOutput::sc2ex_nextTrack: return KeyCode::PS2_KEY_NEXT_TR;
                case KeyboardOutput::sc2ex_prevTrack: return KeyCode::PS2_KEY_PREV_TR;
                case KeyboardOutput::sc2ex_stop: return KeyCode::PS2_KEY_STOP;
                case KeyboardOutput::sc2ex_play: return KeyCode::PS2_KEY_PLAY;
                case KeyboardOutput::sc2ex_mute: return KeyCode::PS2_KEY_MUTE;
                case KeyboardOutput::sc2ex_volumeUp: return KeyCode::PS2_KEY_VOL_UP;
                case KeyboardOutput::sc2ex_volumeDown: return KeyCode::PS2_KEY_VOL_DN;
                case KeyboardOutput::sc2ex_mediaSelect: return KeyCode::PS2_KEY_MEDIA;
                case KeyboardOutput::sc2ex_email: return KeyCode::PS2_KEY_EMAIL;
                case KeyboardOutput::sc2ex_calculator: return KeyCode::PS2_KEY_CALC;
                case KeyboardOutput::sc2ex_myComputer: return KeyCode::PS2_KEY_COMPUTER;
                case KeyboardOutput::sc2ex_webSearch: return KeyCode::PS2_KEY_WEB_SEARCH;
                case KeyboardOutput::sc2ex_webHome: return KeyCode::PS2_KEY_WEB_HOME;
                case KeyboardOutput::sc2ex_webBack: return KeyCode::PS2_KEY_WEB_BACK;
                case KeyboardOutput::sc2ex_webForward: return KeyCode::PS2_KEY_WEB_FORWARD;
                case KeyboardOutput::sc2ex_webStop: return KeyCode::PS2_KEY_WEB_STOP;
                case KeyboardOutput::sc2ex_webRefresh: return KeyCode::PS2_KEY_WEB_REFRESH;
                case KeyboardOutput::sc2ex_webFavorites: return KeyCode::PS2_KEY_WEB_FAVOR;
                case KeyboardOutput::sc2ex_power: return KeyCode::PS2_KEY_POWER;
                case KeyboardOutput::sc2ex_sleep: return KeyCode::PS2_KEY_SLEEP;
                case KeyboardOutput::sc2ex_wake: return KeyCode::PS2_KEY_WAKE;
                default: return KeyCode::PS2_NONE;
            }
        }
    };
}