public URI CalcURL()
{
URI parent = AdaptationSet.CalcURL();
URI local = URI.FromBaseURLs(BaseURLs);
return(local == null ? parent : parent.With(local));
}
public AdaptationSet(Node.AdaptationSet set)
{
Id = set.Id;
Group = set.Group;
Lang = set.GetLang() ?? "und";
ContentProtections = new ContentProtection[set.ContentProtections.Length];
for (int i = 0; i < ContentProtections.Length; ++i)
{
ContentProtections[i] = new ContentProtection(set.ContentProtections[i]);
}
Roles = new Role[set.Roles.Length];
for (int i = 0; i < Roles.Length; ++i)
{
Node.Descriptor r = set.Roles[i];
Roles[i] = new Role(r.SchemeIdUri, r.Value);
}
Representations = new Representation[set.Representations.Length];
for (int i = 0; i < Representations.Length; ++i)
{
Representations[i] = new Representation(set.Representations[i]);
}
Type = new MimeType(set.GetContentType() ??
GuessFromMimeType(set.MimeType) ??
GuessFromRepresentations());
}
private IRepresentationStream CreateBaseURLRepresentationStream()
{
Dynamic.TimeRange periodRange = null;
if (Period.Start != null && Period.Duration != null)
{
periodRange = new Dynamic.TimeRange(Period.Start.Value, Period.Duration.Value);
}
URI media_uri = AdaptationSet.CalcURL();
foreach (BaseURL url in BaseURLs)
{
if (!string.IsNullOrEmpty(url.BaseUrlValue))
{
media_uri = media_uri.With(url.BaseUrlValue);
}
}
Dynamic.SegmentBase segBase = SegmentBase();
var presentationTimeOffset = segBase.PresentationTimeOffset ?? 0;
TimeSpan availabilityTimeOffset = segBase.AvailabilityTimeOffset.HasValue ?
TimeSpan.FromSeconds(segBase.AvailabilityTimeOffset.Value) : TimeSpan.MaxValue;
// Live content elements from Segment Base...
// Can we have this changing dynamically and available at given time?
// God forbids...
return(new Dynamic.BaseRepresentationStream(
null,
new Dynamic.Segment(media_uri.Uri, null, periodRange),
presentationTimeOffset, segBase.TimeShiftBufferDepth,
availabilityTimeOffset, segBase.AvailabilityTimeComplete));
}
private TimeSpan?GuessFromRepresentations(AdaptationSet set)
{
TimeSpan?result = null;
foreach (Representation repr in set.Representations)
{
TimeSpan?longest = GuessFromRepresentations(repr);
if (result == null)
{
result = longest;
}
else if (longest != null && result.Value < longest.Value)
{
result = longest.Value;
}
}
return(result);
}
private IRepresentationStream CreateListRepresentationStream()
{
Dynamic.SegmentList seg = SegmentList();
Dynamic.SegmentBase segBase = SegmentBase();
URL init_url = GetFirst(seg.Initializations) ?? GetFirst(segBase.Initializations);
URI init_uri = null;
if (init_url?.SourceURL != null)
{
init_uri = AdaptationSet.CalcURL()?.With(init_url.SourceURL);
}
// If we still have no init URI, construct one based on BaseURL
// for that purpose, index range from URL is required. Don't even try without it
if (init_uri == null && init_url?.Range != null)
{
if (this.BaseURL == null)
{
throw new ArgumentNullException("the BaseURL is null");
}
init_uri = new URI(this.BaseURL);
}
Dynamic.Segment init = init_uri == null ? null : new Dynamic.Segment(init_uri.Uri, init_url?.Range);
// Live content elements from Segment Base...
var presentationTimeOffset = seg.PresentationTimeOffset ?? 0;
TimeSpan availabilityTimeOffset = seg.AvailabilityTimeOffset.HasValue ?
TimeSpan.FromSeconds(seg.AvailabilityTimeOffset.Value) : TimeSpan.MaxValue;
Dynamic.ListItem[] items = Dynamic.ListItem.FromXml(
seg.StartNumber ?? 1,
Period.Start ?? new TimeSpan(0),
seg.Timescale ?? 1,
seg.Duration ?? 0,
seg.SegmentURLs,
this.BaseURL);
return(new Dynamic.ListRepresentationStream(CalcURL().Uri, init, seg.Timescale ?? 1,
items,
presentationTimeOffset, seg.TimeShiftBufferDepth,
availabilityTimeOffset, seg.AvailabilityTimeComplete));
}
private IRepresentationStream CreateBaseRepresentationStream()
{
Dynamic.TimeRange periodRange = null;
if (Period.Start != null && Period.Duration != null)
{
periodRange = new Dynamic.TimeRange(Period.Start.Value, Period.Duration.Value);
}
Dynamic.SegmentBase seg = SegmentBase();
URL init_url = GetFirst(seg.Initializations);
string index_range = seg.IndexRange;
// Live content elements from Segment Base...
var presentationTimeOffset = seg.PresentationTimeOffset ?? 0;
TimeSpan availabilityTimeOffset = seg.AvailabilityTimeOffset.HasValue ?
TimeSpan.FromSeconds(seg.AvailabilityTimeOffset.Value) : TimeSpan.MaxValue;
URI media_uri = CalcURL();
URI init_uri = null;
// If the init_url.SourceUrl is present,
// it is relative to AdaptiveSet, not Representation.
// Representation's BaseURI is for media only.
if (init_url?.SourceURL != null)
{
init_uri = AdaptationSet.CalcURL()?.With(init_url.SourceURL);
}
else if (init_url != null)
{
init_uri = media_uri;
}
if (init_uri == null)
{
if (media_uri == null)
{
return(null);
}
Dynamic.Segment media = new Dynamic.Segment(media_uri.Uri, null, periodRange);
Dynamic.Segment index = index_range.Length != 0 ? new Dynamic.Segment(media_uri.Uri, index_range) : null;
return(new Dynamic.BaseRepresentationStream(null, media,
presentationTimeOffset, seg.TimeShiftBufferDepth,
availabilityTimeOffset, seg.AvailabilityTimeComplete,
index));
}
if (media_uri == null)
{
return(null);
}
return(new Dynamic.BaseRepresentationStream(
new Dynamic.Segment(init_uri.Uri, init_url?.Range),
new Dynamic.Segment(media_uri.Uri, null, periodRange),
presentationTimeOffset, seg.TimeShiftBufferDepth,
availabilityTimeOffset, seg.AvailabilityTimeComplete,
index_range.Length != 0? new Dynamic.Segment(init_uri.Uri, index_range):null));
}
public Representation(AdaptationSet set)
{
AdaptationSet = set;
}
