LlamaCasty/Helpers/DroppedPercentConverter.cs

using System.Globalization;
using System.Windows.Data;

namespace ytLive.Helpers;

public class DroppedPercentConverter : IMultiValueConverter
{
    public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
    {
        var dropped = values.Length > 0 && values[0] is int d ? d : 0;
        var fps = values.Length > 1 && values[1] is double f ? f : 0;
        var duration = values.Length > 2 && values[2] is TimeSpan t ? t : TimeSpan.Zero;
        var total = fps * duration.TotalSeconds;
        var percent = total > 0 ? dropped / total * 100 : 0;
        return $"{dropped} ({percent.ToString("0.0", CultureInfo.InvariantCulture)}%)";
    }

    public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        => throw new NotSupportedException();
}