/// <summary>
/// Fades in the audio
/// </summary>
/// <param name="time">Time over which to fade the audio in</param>
/// <param name="maxVolume">The maximum volume to reach</param>
/// <param name="dVolume">The volume step size to use</param>
/// <param name="fadeEndAction">What action to do at the end of the fade</param>
public Task FadeIn(float time, float maxVolume, float dVolume, FadeEndAction fadeEndAction)
{
if (maxVolume > MaxVolume)
{
throw new ArgumentOutOfRangeException("The maximum fade in volume " + maxVolume + " was greater than the maximum volume for this audio " + MaxVolume);
}
var ct = _tokenSource.Token;
return(Task.Run(async() =>
{
int dt = (int)(time / ((maxVolume - Volume) / dVolume));
while (Volume < maxVolume && !ct.IsCancellationRequested)
{
Volume += dVolume;
await Task.Delay(dt, ct);
}
switch (fadeEndAction)
{
case FadeEndAction.Pause:
Pause();
break;
case FadeEndAction.Stop:
Stop();
break;
}
}, ct));
}
/// <summary>
/// Fades out the audio.
/// </summary>
/// <param name="time"></param>
/// <param name="minVolume"></param>
/// <param name="dVolume"></param>
/// <param name="fadeEndAction">What action to do at the end of the fade</param>
public Task FadeOut(float time, float minVolume, float dVolume, FadeEndAction fadeEndAction)
{
var ct = _tokenSource.Token;
return(Task.Run(async() =>
{
if (this.IsStopped)
{
return;
}
int dt = (int)(time / ((Volume - minVolume) / dVolume));
while (Volume > minVolume && !ct.IsCancellationRequested)
{
Volume -= dVolume;
await Task.Delay(dt, ct);
}
switch (fadeEndAction)
{
case FadeEndAction.Pause:
Pause();
break;
case FadeEndAction.Stop:
Stop();
break;
}
}, ct));
}
