private IRepresentationStream CreateTemplateRepresentationStream()
{
Dynamic.SegmentTemplate seg = SegmentTemplate();
SegmentTimeline segTimeline = GetFirst(seg.SegmentTimelines);
uint startNumber = seg.StartNumber ?? 1;
Dynamic.TimelineItem[] timeline = null;
if (segTimeline == null)
{
timeline = FromDuration(startNumber, seg);
}
else
{
timeline = FromTimeline(startNumber, seg, segTimeline);
}
if (timeline == null)
{
return(null);
}
// Live content elements from Segment Base...
var presentationTimeOffset = seg.PresentationTimeOffset ?? 0;
TimeSpan availabilityTimeOffset = seg.AvailabilityTimeOffset.HasValue ?
TimeSpan.FromSeconds(seg.AvailabilityTimeOffset.Value) : TimeSpan.Zero;
return(new Dynamic.TemplateRepresentationStream(CalcURL().Uri,
seg.Initialization, seg.Media, Bandwidth, Id,
seg.Timescale ?? 1, timeline,
presentationTimeOffset, seg.TimeShiftBufferDepth,
availabilityTimeOffset, seg.AvailabilityTimeComplete, (segTimeline != null),
seg.StartNumber ?? 0, seg.Duration));
}
private Dynamic.TimelineItem[] FromDuration(uint startNumber, Dynamic.SegmentTemplate seg)
{
uint?segDuration = seg.Duration;
if (segDuration == null)
{
return(null);
}
TimeSpan start = Period.Start ?? TimeSpan.Zero;
TimeSpan?duration = Period.Duration;
if (duration == null)
{
TimeSpan mpdDuration = Document.MediaPresentationDuration ?? TimeSpan.Zero;
if (mpdDuration <= start)
{
duration = TimeSpan.Zero;
}
else
{
duration = mpdDuration - start;
}
}
if (duration.Equals(TimeSpan.Zero))
{
return(null);
}
return(Dynamic.Timeline.FromDuration(startNumber, start,
duration.Value, segDuration.Value, seg.Timescale ?? 1));
}
private Dynamic.TimelineItem[] FromTimeline(uint startNumber, Dynamic.SegmentTemplate seg, SegmentTimeline segmentTimeline)
{
return(Dynamic.Timeline.FromXml(startNumber, Period.Start ?? TimeSpan.Zero, Period.End, seg.Timescale ?? 1, segmentTimeline.Ss));
}
