private Bandwidth CalculateBandwidth(Bandwidth bandwidth, long progress, long fileLength, Stopwatch sw)
{
try
{
var measure = new BandwidthMeasure
{
ElapsedMs = sw.ElapsedMilliseconds, ProgressBytes = progress, TotalBytes = fileLength
};
//we suppose that every measure is created in 100ms interval
bandwidth.Measures.Add(measure);
bandwidth.Mean1Second = CalculateBandwidthForPeriod(bandwidth.Measures, 1000, bandwidth.Mean1Second);
bandwidth.Mean5Seconds = CalculateBandwidthForPeriod(bandwidth.Measures, 5000, bandwidth.Mean5Seconds);
bandwidth.Mean30Seconds =
CalculateBandwidthForPeriod(bandwidth.Measures, 30000, bandwidth.Mean30Seconds);
bandwidth.Mean1Minute = CalculateBandwidthForPeriod(bandwidth.Measures, 60000, bandwidth.Mean1Minute);
bandwidth.Remaining = bandwidth.Mean1Minute > 0
? (fileLength - progress) / bandwidth.Mean1Minute
: (long?)null;
}
catch (Exception ex)
{
OnExceptionThrown(ex);
}
return(bandwidth);
}
public void OnBandwidthMeasure(Bandwidth bandwidth)
{
try
{
BandwidthMeasured?.Invoke(this, new BandwidthEventArgs {
Bandwidth = bandwidth
});
}
catch (Exception ex)
{
OnExceptionThrown(ex);
}
}
private void StartBandwidthThread(ProgressChangedEventArgs changedEventArgs)
{
new Thread(_ =>
{
try
{
var bandwidth = new Bandwidth
{
FileUrl = changedEventArgs.FileUrl, Measures = new List <BandwidthMeasure>()
};
var sw = Stopwatch.StartNew();
bool completed = false;
while (!stopProgressThread && !completed)
{
ProgressChangedEventArgs bandwidthArgs;
lock (changedEventArgs)
{
bandwidthArgs = changedEventArgs.ShallowCopy();
}
completed = bandwidthArgs.Progress == bandwidthArgs.FileLength;
CalculateBandwidth(bandwidth, changedEventArgs.Progress, changedEventArgs.FileLength, sw);
OnBandwidthMeasure(bandwidth);
Thread.Sleep(100);
}
sw.Stop();
}
catch (Exception ex)
{
OnExceptionThrown(ex);
}
})
{
IsBackground = true
}.Start();
}