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;
}