private float caclNextTimeStamp(float timestep)
{
// if it was not running just use last received value
if (CurrentLocalTime < 0.0f)
{
float initBufferTime = Math.Max(_runningStats.AverageBufferTime, 0.08f);
initBufferTime = Math.Min(initBufferTime, 0.05f);
// start a bit conservative, give buffer time to fill up and avoid jitter in first few frames
return(LastSnapshotLocalTime - initBufferTime);
}
// if there is a durable packet loss, skip updating stats and just pretend time passes as expected
if (!_isNetworkHealthy)
{
return(CurrentLocalTime + timestep * 0.999f); // let's be a bit conservative
}
float nextTimeStamp = CurrentLocalTime + timestep;
float bufferedTime = LastSnapshotLocalTime - nextTimeStamp;
_runningStats.addSample(bufferedTime);
// there is bad quality with current output time pace, slow down if it would help
if (_runningStats.CurrentRateQuality < 0.85f &&
_runningStats.SlowDownIndicator >= _runningStats.CurrentRateQuality)
{
_runningStats.SlowDown();
return(nextTimeStamp - RunningStats.TimeStep);
}
// speed up if can have good quality with shorted buffer time
if (_runningStats.SpeedUpIndicator > 0.95f)
{
_runningStats.SpeedUp();
return(nextTimeStamp + RunningStats.TimeStep);
}
return(nextTimeStamp);
}
