public static TValue?AttributeValue <TValue>(this M3U8TagInstance tagInstance, M3U8ValueAttribute <TValue> attribute) where TValue : struct
{
M3U8AttributeValueInstance <TValue> attributeValueInstance = M3U8TagInstanceExtensions.Attribute <TValue>(tagInstance, attribute);
if (null == attributeValueInstance)
{
return(new TValue?());
}
return(new TValue?(attributeValueInstance.Value));
}
public static TValue AttributeObject <TValue>(this M3U8TagInstance tagInstance, M3U8ValueAttribute <TValue> attribute) where TValue : class
{
M3U8AttributeValueInstance <TValue> attributeValueInstance = M3U8TagInstanceExtensions.Attribute <TValue>(tagInstance, attribute);
if (null == attributeValueInstance)
{
return(default(TValue));
}
return(attributeValueInstance.Value);
}
public static IEnumerable <M3U8AttributeInstance> Attributes(this M3U8TagInstance tagInstance)
{
AttributesTagInstance attributesTagInstance = tagInstance as AttributesTagInstance;
if (null == attributesTagInstance)
{
return(M3U8TagInstanceExtensions.NoAttributeInstances);
}
return(attributesTagInstance.Attributes);
}
private void HandleExt(string line)
{
int length = line.IndexOf(':');
string tagName = line;
string str = (string)null;
if (length > 3)
{
tagName = line.Substring(0, length);
if (length + 1 < line.Length)
{
str = line.Substring(length + 1);
}
}
M3U8TagInstance tagInstance = M3U8Tags.Default.Create(tagName, str);
if (null == tagInstance)
{
return;
}
switch (tagInstance.Tag.Scope)
{
case M3U8TagScope.Global:
if (1 == this._lineNumber && tagInstance.Tag == M3U8Tags.ExtM3UMarker)
{
this._hasMarker = true;
}
this._globalTags.Add(tagInstance);
break;
case M3U8TagScope.Shared:
this.ResolveShared(tagInstance);
break;
case M3U8TagScope.Segment:
this._tags.Add(tagInstance);
break;
}
}
void ResolveShared(M3U8TagInstance tagInstance)
{
// TODO: Shared tags needs a conflict/update policy (e.g., a new key of the same type should remove the old one)
_sharedTags.Add(tagInstance);
}
private void ResolveShared(M3U8TagInstance tagInstance)
{
this._sharedTags.Add(tagInstance);
}
static bool IsYesNo(M3U8TagInstance tag, M3U8ValueAttribute<string> attribute, bool defaultValue = false)
{
var attr = tag.Attribute(attribute);
if (null == attr || string.IsNullOrWhiteSpace(attr.Value))
return defaultValue;
return 0 == string.CompareOrdinal("YES", attr.Value.ToUpperInvariant());
}
static void AddMedia(Uri playlist, M3U8TagInstance gt, Dictionary<string, MediaGroup> audioStreams)
{
var groupId = gt.Attribute(ExtMediaSupport.AttrGroupId).Value;
var urlAttribute = gt.AttributeObject(ExtMediaSupport.AttrUri);
Uri playlistUrl = null;
if (null != urlAttribute)
playlistUrl = new Uri(playlist, new Uri(urlAttribute, UriKind.RelativeOrAbsolute));
var language = gt.AttributeObject(ExtMediaSupport.AttrLanguage);
var audioStream = new PlaylistSubStream
{
Type = gt.AttributeObject(ExtMediaSupport.AttrType),
Name = groupId,
Playlist = playlistUrl,
IsAutoselect = IsYesNo(gt, ExtMediaSupport.AttrAutoselect),
Language = null == language ? null : language.Trim().ToLower()
};
MediaGroup mediaGroup;
if (!audioStreams.TryGetValue(groupId, out mediaGroup))
{
mediaGroup = new MediaGroup
{
Default = audioStream
};
audioStreams[groupId] = mediaGroup;
}
var isDefault = IsYesNo(gt, ExtMediaSupport.AttrDefault);
if (isDefault)
mediaGroup.Default = audioStream;
var name = gt.Attribute(ExtMediaSupport.AttrName).Value;
mediaGroup.Streams[name] = audioStream;
}
public static M3U8AttributeValueInstance <TValue> Attribute <TValue>(this M3U8TagInstance tagInstance, M3U8ValueAttribute <TValue> attribute, TValue value) where TValue : IEquatable <TValue>
{
return(Enumerable.FirstOrDefault <M3U8AttributeValueInstance <TValue> >(Enumerable.OfType <M3U8AttributeValueInstance <TValue> >((IEnumerable)M3U8TagInstanceExtensions.Attributes(tagInstance)), (Func <M3U8AttributeValueInstance <TValue>, bool>)(a => a.Attribute == (M3U8Attribute)attribute && a.Value.Equals(value))));
}
public static IEnumerable <M3U8AttributeValueInstance <TValue> > Attributes <TValue>(this M3U8TagInstance tagInstance, M3U8ValueAttribute <TValue> attribute)
{
return(Enumerable.Where <M3U8AttributeValueInstance <TValue> >(Enumerable.OfType <M3U8AttributeValueInstance <TValue> >((IEnumerable)M3U8TagInstanceExtensions.Attributes(tagInstance)), (Func <M3U8AttributeValueInstance <TValue>, bool>)(a => a.Attribute == (M3U8Attribute)attribute)));
}
public static TInstance AttributeInstance <TInstance>(this M3U8TagInstance tagInstance, M3U8Attribute attribute) where TInstance : M3U8AttributeInstance
{
return(Enumerable.FirstOrDefault <M3U8AttributeInstance>(M3U8TagInstanceExtensions.Attributes(tagInstance), (Func <M3U8AttributeInstance, bool>)(a => a.Attribute == attribute)) as TInstance);
}
public static IEnumerable <M3U8AttributeInstance> Attributes(this M3U8TagInstance tagInstance, M3U8Attribute attribute)
{
return(Enumerable.Where <M3U8AttributeInstance>(M3U8TagInstanceExtensions.Attributes(tagInstance), (Func <M3U8AttributeInstance, bool>)(a => a.Attribute == attribute)));
}