/// <summary>
/// Merge close Time lines if volume the same
/// </summary>
private void MergeTimeLines()
{
// save all indexes to delete and then delete those indexes
TimeLineVolume PreviousTimeLine = DetectedTime[0];
for (int i = 1; i < DetectedTime.Count; i++)
{
if (PreviousTimeLine.Volume == DetectedTime[i].Volume)
{
// set Previous timeLine.end next timeLine.end
PreviousTimeLine.End = DetectedTime[i].End;
// then delete because we merged this time lines
DetectedTime.RemoveAt(i);
// we have deleted time line we need to decrease i value
i--;
// and we set value to item with longer duration
DetectedTime[i] = PreviousTimeLine;
}
else
{
DetectedTime[i - 1] = PreviousTimeLine;
PreviousTimeLine = DetectedTime[i];
}
}
}
/// <summary>
/// Reformating DetectedTime into start-end TimeSpan list
/// </summary>
/// <param name="DetectedTime">result of DetectVolumeLevel()</param>
/// <returns> squeezed list </returns>
private void FormatDetectedTimeSpans(List <TimeSpanVolume> DetectedTime)
{
if (DetectedTime.Count < 1)
{
throw new ArgumentException($"Size of list DetectedTime ({DetectedTime.Count}) less than 1");
}
List <TimeLineVolume> formatedList = new List <TimeLineVolume>();
// first elem case
TimeLineVolume tmp = new TimeLineVolume(DetectedTime[0].Volume, new TimeSpan(), new TimeSpan());
foreach (var span in DetectedTime)
{
if (tmp.Volume != span.Volume)
{
if (tmp.Duration > TimeSpan.FromMilliseconds(0))
{
formatedList.Add(tmp);
}
// clear tmp and set span
tmp = new TimeLineVolume(span.Volume, tmp.End, tmp.End);
tmp.Volume = span.Volume;
tmp.End += span.TimeSpan;
}
else
{
tmp.End += span.TimeSpan;
}
}
if (tmp.Duration > TimeSpan.FromMilliseconds(0))
{
tmp.End = AudioReader.TotalTime; // set to the end because sometimes it Round millisec so we got less time
formatedList.Add(tmp);
}
formatedList.TrimExcess();
this.DetectedTime = formatedList;
}
