private void AudioEndpointVolume_OnVolumeNotification(AudioVolumeNotificationData data)
{
_volume = data.MasterVolume.DeNormalizeVolume();
_volumeResetEvent.Set();
OnVolumeChanged(_volume);
if (data.Muted != _isMuted)
{
_isMuted = data.Muted;
_muteChangedResetEvent.Set();
OnMuteChanged(_isMuted);
}
}
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.
//
var data =
(AudioVolumeNotificationDataStruct)
Marshal.PtrToStructure(notifyData, typeof(AudioVolumeNotificationDataStruct));
//Determine offset in structure of the first float
var offset = Marshal.OffsetOf(typeof(AudioVolumeNotificationDataStruct), "ChannelVolume");
//Determine offset in memory of the first float
var firstFloatPtr = (IntPtr)((long)notifyData + (long)offset);
//Something weird happened, better to ignore it and move on
if (data.nChannels > 100)
{
return(0);
}
var 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.
var notificationData = new AudioVolumeNotificationData(data.guidEventContext, data.bMuted,
data.fMasterVolume, voldata);
var p = _handler.Target as AudioEndpointVolume;
if (_handler.IsAlive && p != null)
{
p.FireNotification(notificationData);
}
return(0);
}
internal void FireNotification(AudioVolumeNotificationData notificationData)
{
OnVolumeNotification?.Invoke(notificationData);
}
private void AudioEndpointVolume_OnVolumeNotification(AudioVolumeNotificationData data)
{
RaiseVolumeChanged();
}
internal void FireNotification(AudioVolumeNotificationData notificationData)
{
AudioEndpointVolumeNotificationDelegate del = OnVolumeNotification;
if (del != null)
{
del(notificationData);
}
}
private void AudioEndpointVolume_OnVolumeNotification(AudioVolumeNotificationData data)
{
RaiseVolumeChanged(Volume);
//Fire the muted changed here too
OnPropertyChanged("IsMuted");
}
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.
//
var data =
(AudioVolumeNotificationDataStruct)
Marshal.PtrToStructure(notifyData, typeof(AudioVolumeNotificationDataStruct));
//Determine offset in structure of the first float
var offset = Marshal.OffsetOf(typeof(AudioVolumeNotificationDataStruct), "ChannelVolume");
//Determine offset in memory of the first float
var firstFloatPtr = (IntPtr)((long)notifyData + (long)offset);
//Something weird happened, better to ignore it and move on
if (data.nChannels > 100)
return 0;
var 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.
var notificationData = new AudioVolumeNotificationData(data.guidEventContext, data.bMuted,
data.fMasterVolume, voldata);
var p = _handler.Target as AudioEndpointVolume;
if (_handler.IsAlive && p != null)
p.FireNotification(notificationData);
return 0;
}