private bool CreateVolumeInstanceIfNull()
{
if (this.volume == null)
{
try
{
this.volume = Volume.GetInstance();
this.CompositeDisposable.Add(new PropertyChangedEventListener(this.volume)
{
{ "IsMute", (sender, args) => this.IsMute = this.volume.IsMute },
});
this.IsMute = this.volume.IsMute;
}
catch (Exception ex)
{
Debug.WriteLine(ex);
return false;
}
}
return true;
}
public static Volume GetInstance()
{
var volume = new Volume();
var processId = Process.GetCurrentProcess().Id;
var devenum = new MMDeviceEnumerator();
var device = devenum.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia);
for (var i = 0; i < device.AudioSessionManager.Sessions.Count; i++)
{
var session = device.AudioSessionManager.Sessions[i];
if (session.ProcessID == processId)
{
volume.simpleAudioVolume = session.SimpleAudioVolume;
volume.IsMute = session.SimpleAudioVolume.Mute;
volume.Value = (int)(session.SimpleAudioVolume.MasterVolume * 100);
// ToDo: ↓ これ入れて通知受けるようにすると、通知が走ったタイミングでアプリが落ちる。意味不明。誰か助けて。
//session.RegisterAudioSessionNotification(volume);
return volume;
}
}
throw new Exception("Session is not found.");
}