Method getVolume

src/VolumeControl.cpp:237–319

}

int VolumeControl::getVolume() const
{
	int volume = 0;

#if defined (__APPLE__)
    #error TODO: Not implemented for MacOS yet!!!
#elif defined(__linux__)
	if (mixerElem != nullptr)
	{
		//get volume range
		long minVolume;
		long maxVolume;
		if (snd_mixer_selem_get_playback_volume_range(mixerElem, &minVolume, &maxVolume) == 0)
		{
			//ok. now get volume
			long rawVolume;
			if (snd_mixer_selem_get_playback_volume(mixerElem, SND_MIXER_SCHN_MONO, &rawVolume) == 0)
			{
				//worked. bring into range 0-100
				rawVolume -= minVolume;
				if (rawVolume > 0)
				{
					volume = (rawVolume * 100) / (maxVolume - minVolume);
				}
				//else volume = 0;
			}
			else
			{
				LOG(LogError) << "VolumeControl::getVolume() - Failed to get mixer volume!";
			}
		}
		else
		{
			LOG(LogError) << "VolumeControl::getVolume() - Failed to get volume range!";
		}
	}
#elif defined(WIN32) || defined(_WIN32)
	if (mixerHandle != nullptr)
	{
		//Windows older than Vista. use mixer API. get volume from line control
		MIXERCONTROLDETAILS_UNSIGNED value;
		MIXERCONTROLDETAILS mixerControlDetails;
		mixerControlDetails.cbStruct = sizeof(MIXERCONTROLDETAILS);
		mixerControlDetails.dwControlID = mixerControl.dwControlID;
		mixerControlDetails.cChannels = 1; //always 1 for a MIXERCONTROL_CONTROLF_UNIFORM control
		mixerControlDetails.cMultipleItems = 0; //always 0 except for a MIXERCONTROL_CONTROLF_MULTIPLE control
		mixerControlDetails.paDetails = &value;
		mixerControlDetails.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);
		if (mixerGetControlDetails((HMIXEROBJ)mixerHandle, &mixerControlDetails, MIXER_GETCONTROLDETAILSF_VALUE) == MMSYSERR_NOERROR) 
		{
			volume = (uint8_t)((value.dwValue * 100) / 65535);
		}
		else
		{
			LOG(LogError) << "VolumeControl::getVolume() - Failed to get mixer volume!";
		}
	}
	else if (endpointVolume != nullptr)