void AudioEndpointVolume_OnVolumeNotification(AudioVolumeNotificationData data)
{
bool wasMuted = _isMuted;
int lastVolume = _volume;
_isMuted = _audioDefaultDevice.Muted;
if (_waveVolume && OSInfo.OSInfo.Win8OrLater())
{
_isMutedVolume = (int)GetValue(_componentType, MixerControlType.Mute) == 1;
}
_volume = (int)Math.Round(_audioDefaultDevice.MasterVolume * VolumeMaximum);
if (ControlChanged != null && (wasMuted != _isMuted || lastVolume != _volume))
{
ControlChanged(null, null);
if (_waveVolume && OSInfo.OSInfo.Win8OrLater() && (_isMutedVolume != IsMuted))
{
SetValue(_mixerControlDetailsMute, _isMuted);
}
}
}
void AudioEndpointVolume_OnVolumeNotification(AudioVolumeNotificationData data)
{
bool wasMuted = _isMuted;
int lastVolume = _volume;
_isMuted = _audioDefaultDevice.Muted;
if (_waveVolume && OSInfo.OSInfo.Win8OrLater())
{
_isMutedVolume = (int) GetValue(_componentType, MixerControlType.Mute) == 1;
}
_volume = (int)Math.Round(_audioDefaultDevice.MasterVolume * VolumeMaximum);
if (ControlChanged != null && (wasMuted != _isMuted || lastVolume != _volume))
{
ControlChanged(null, null);
if (_waveVolume && OSInfo.OSInfo.Win8OrLater() && (_isMutedVolume != IsMuted))
{
SetValue(_mixerControlDetailsMute, _isMuted);
}
}
}
void AudioEndpointVolume_OnVolumeNotification(AudioVolumeNotificationData data)
{
bool wasMuted = _isMuted;
int lastVolume = _volume;
_isMuted = _audioDefaultDevice.Muted;
_volume = (int)Math.Round(_audioDefaultDevice.MasterVolume * VolumeMaximum);
if (ControlChanged != null && (wasMuted != _isMuted || lastVolume != _volume))
{
ControlChanged(null, null);
}
}
internal void FireNotification(AudioVolumeNotificationData NotificationData)
{
AudioEndpointVolumeNotificationDelegate del = OnVolumeNotification;
if (del != null)
{
del(NotificationData);
}
}
public int OnNotify(IntPtr NotifyData)
{
//Since AUDIO_VOLUME_NOTIFICATION_DATA is dynamic in length based on the
//number of audio channels available we cannot just call PtrToStructure
//to get all data, thats why it is split up into two steps, first the static
//data is marshalled into the data structure, then with some IntPtr math the
//remaining floats are read from memory.
AUDIO_VOLUME_NOTIFICATION_DATA data = (AUDIO_VOLUME_NOTIFICATION_DATA)Marshal.PtrToStructure(NotifyData, typeof(AUDIO_VOLUME_NOTIFICATION_DATA));
//Determine offset in structure of the first float
IntPtr Offset = Marshal.OffsetOf(typeof(AUDIO_VOLUME_NOTIFICATION_DATA), "ChannelVolume");
//Determine offset in memory of the first float
IntPtr FirstFloatPtr = (IntPtr)((long)NotifyData + (long)Offset);
float[] voldata = new float[data.nChannels];
//Read all floats from memory.
for (int i = 0; i < data.nChannels; i++)
{
voldata[i] = (float)Marshal.PtrToStructure(FirstFloatPtr, typeof(float));
}
//Create combined structure and Fire Event in parent class.
AudioVolumeNotificationData NotificationData = new AudioVolumeNotificationData(data.guidEventContext, data.bMuted, data.fMasterVolume, voldata);
_Parent.FireNotification(NotificationData);
return 0; //S_OK
}
void AudioEndpointVolume_OnVolumeNotification(AudioVolumeNotificationData data)
{
try
{
if ((data?.MasterVolume == null) || IsMixerLocked())
{
Log.Debug("Mixer: AudioEndpointVolume_OnVolumeNotification early return,, IsMixerLocked():{0}, data null:{1}", IsMixerLocked(), (data?.MasterVolume == null));
return;
}
using (MixerLock(lockTimeout))
{
bool wasMuted = _isMuted;
int lastVolume = _volume;
bool waveChange = false;
bool isMutedMaster = _audioDefaultDevice.Muted;
int volumeMaster = (int)Math.Round(_audioDefaultDevice.MasterVolume * VolumeMaximum);
if (_useWave)
{
bool isMutedWave = (int)GetValue(_componentType, MixerControlType.Mute) == 1;
int volumeWave = (int)GetValue(_componentType, MixerControlType.Volume);
if ((isMutedWave != _isMutedWave) || (volumeWave != _volumeWave))
{
_isMutedWave = isMutedWave;
_volumeWave = volumeWave;
waveChange = true;
}
}
if (waveChange)
{
_isMuted = _isMutedWave;
_volume = _volumeWave;
}
else
{
_isMuted = isMutedMaster;
_volume = volumeMaster;
}
if (wasMuted != _isMuted || lastVolume != _volume)
{
Log.Debug("Mixer: AudioEndpointVolume change, new muted = {0}, new volume = {1}, old muted = {2}, old volume = {3}, waveChange = {4}", _isMuted, _volume, wasMuted, lastVolume, waveChange);
}
if (ControlChanged != null && (wasMuted != _isMuted ||
lastVolume != _volume ||
(_useWave && OSInfo.OSInfo.Win8OrLater() && (isMutedMaster != _isMuted)) ))
{
ControlChanged(null, null);
if (_useWave && OSInfo.OSInfo.Win8OrLater() && (isMutedMaster != _isMuted))
{
SetValue(_mixerControlDetailsMute, isMutedMaster);
}
}
if (VolumeHandler.Instance != null) VolumeHandler.Instance.mixer_UpdateVolume();
}
}
catch (Exception ex)
{
Log.Error($"Mixer: error occured in AudioEndpointVolume_OnVolumeNotification(): {ex}");
}
}
