Fixed VolumeControl::getVolume() rounding bug on Windows.

Author: Aloshi

es-app/src/VolumeControl.cpp

@@ -284,7 +284,7 @@ int VolumeControl::getVolume() const
 		mixerControlDetails.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);
 		if (mixerGetControlDetails((HMIXEROBJ)mixerHandle, &mixerControlDetails, MIXER_GETCONTROLDETAILSF_VALUE) == MMSYSERR_NOERROR) 
 		{
-			volume = (uint8_t)((value.dwValue * 100) / 65535);
+			volume = (uint8_t)round((value.dwValue * 100) / 65535);
 		}
 		else
 		{
@@ -297,7 +297,8 @@ int VolumeControl::getVolume() const
 		float floatVolume = 0.0f; //0-1
 		if (endpointVolume->GetMasterVolumeLevelScalar(&floatVolume) == S_OK)
 		{
-			volume = (uint8_t)(floatVolume * 100.0f);
+			volume = (uint8_t)round(floatVolume * 100.0f);
+			LOG(LogInfo) << " getting volume as " << volume << " ( from float " << floatVolume << ")";
 		}
 		else
 		{

es-app/src/guis/GuiMenu.cpp

@@ -75,7 +75,7 @@ GuiMenu::GuiMenu(Window* window) : GuiComponent(window), mMenu(window, "MAIN MEN
 			auto volume = std::make_shared<SliderComponent>(mWindow, 0.f, 100.f, 1.f, "%");
 			volume->setValue((float)VolumeControl::getInstance()->getVolume());
 			s->addWithLabel("SYSTEM VOLUME", volume);
-			s->addSaveFunc([volume] { VolumeControl::getInstance()->setVolume((int)volume->getValue()); });
+			s->addSaveFunc([volume] { VolumeControl::getInstance()->setVolume((int)round(volume->getValue())); });
 
 			// disable sounds
 			auto sounds_enabled = std::make_shared<SwitchComponent>(mWindow);