public int InsertPaddingChapters()
{
int chCount = Chapters.Count;
if (chCount == 0)
{
return(0);
}
var ch = Chapters.First();
if (ch.Time.Begin > TimeSpan.Zero && !ch.IsPaddingChapter)
{
var preChapter = new Chapter(ch.Time.Begin)
{
IsPaddingChapter = true
};
Chapters.Insert(0, preChapter);
}
ch = Chapters.Last();
if (ch.Time.End < this.Duration && !ch.IsPaddingChapter)
{
var postChapter = new Chapter(ch.Time.End, this.Duration)
{
IsPaddingChapter = true
};
Chapters.Add(postChapter);
}
return(Chapters.Count - chCount);
}