CtrlEPMCallback.cpp

#include "CtrlEPMCallback.h"

#define NTDDI_VERSION NTDDI_WIN10_RS5   //0x0A000006 1809
#define _WIN32_WINNT _WIN32_WINNT_WIN10 //Windows 10 (0x0A00)

#include <Windows.h>
#include <PowrProf.h>

#pragma comment(lib, "PowrProf.lib")

CtrlEPMCallback *epmCallbackMainClass;

void epmCallback(EFFECTIVE_POWER_MODE EPM, void *Context) {
    epmMode epm = epmNone;
    switch(int(EPM)){
    case 0:
        epm = BatterySaver;
        break;
    case 1:
        epm = BetterBattery;
        break;
    case 2:
        epm = Balanced;
        break;
    case 3:
        epm = MaxPerformance;
        break;
    case 4:
        epm = MaxPerformance;
        break;
    case 5:
        epm = GameMode;
        break;
    case 6:
        epm = MixedReality;
        break;
    }

    epmCallbackMainClass->emitEpmIdChanged(epm);
}

CtrlEPMCallback::CtrlEPMCallback() {
    epmHandle = new void*;
    PowerRegisterForEffectivePowerModeNotifications(EFFECTIVE_POWER_MODE_V2, epmCallback,
                                                    nullptr, epmHandle);
    // USE EFFECTIVE_POWER_MODE_V2 For Game and AR Modes
    epmCallbackMainClass = this;
}

CtrlEPMCallback::~CtrlEPMCallback() {
    PowerUnregisterFromEffectivePowerModeNotifications(epmHandle);
}

void CtrlEPMCallback::emitEpmIdChanged(epmMode epm){
    currentEpm = epm;
    emit epmIdChanged(epm);
}

void CtrlEPMCallback::emitCurrentEPMState(){
    if(currentEpm != epmNone)
        emit epmIdChanged(currentEpm);
}