private SubtitleInfo xCreateFixedSubtitle(SubtitleInfo subtitle)
{
var resultSub = subtitle.CloneSub();
var correctionsByTimePos = new Dictionary <double, double>();
_points.ForEach(p => correctionsByTimePos.Add(p.X, p.Y));
//place all known corrections on the subtitle
resultSub.TimeMarkers.ForEach(t =>
{
if (correctionsByTimePos.ContainsKey((double)t.FromTime))
{
var correction = correctionsByTimePos[(double)t.FromTime];
t.Correction = (long)correction;
t.IsOffsetCorrected = true;
}
});
//spread correction to all timestamps (including the ones not attached)
long prevOffset = (long)_points[0].Y;
TimeStamp prev = null;
foreach (var time in resultSub.TimeMarkers)
{
if (!time.IsOffsetCorrected)
{
var next = subtitle.Lines.Where(p => p.TimeStamp.FromTime > time.FromTime).FirstOrDefault(x => x.TimeStamp.IsOffsetCorrected);
var currTime = time;
var prevTime = prev;
double newOffset = prevOffset;
if (prevTime != null && next != null)
{
var nextTime = next.TimeStamp;
//timeAfterPrev / timeInterval (=next-prev) = the precentage of movement in the X axis between the two points
double part = ((double)currTime.FromTime - (double)prevTime.FromTime) / ((double)nextTime.FromTime - (double)prevTime.FromTime);
//(change in corrections between prev -> next) * (calculated place between them =part) + (the base correction of prev =the stating point of this correction)
newOffset = (((double)nextTime.Correction - (double)prev.Correction) * part) + (double)prevTime.Correction;
}
time.IsOffsetCorrected = true;
time.Correction = (long)newOffset;
}
else
{
prevOffset = time.Correction;
prev = time;
}
//extend duration for all subs
time.Duration = (long)((double)time.Duration);
}
return(resultSub);
}
public SubtitleInfo CreateFixedSubtitle(SubtitleInfo subtitle)
{
var resultSub = subtitle.CloneSub();
foreach (var time in resultSub.TimeMarkers)
{
time.IsOffsetCorrected = true;
time.Correction = (long)ComputeYforXbyInterpolation(time.FromTime);
}
return(resultSub);
}
