private void ParseExtKey(PlaylistTagValue tag, LoadContext context)
{
var sMethod = tag.Values.GetOrDefault("METHOD");
var sUri = tag.Values.GetOrDefault("URI");
var sIV = tag.Values.GetOrDefault("IV");
var method = (sMethod?.ToUpperInvariant()) switch
{
"AES-128" => HlsKeyMethod.Aes128,
"SAMPLE-AES" => HlsKeyMethod.SampleAes,
"NONE" => HlsKeyMethod.None,
_ => throw new NotSupportedException($"HLS encryption method '{sMethod}' is not supported."),
};
Uri uri = null;
if (!string.IsNullOrEmpty(sUri) && !Uri.TryCreate(sUri, UriKind.RelativeOrAbsolute, out uri))
{
throw new PlaylistDocumentLoadException($"Invalid URI format: {sUri}");
}
if (!string.IsNullOrEmpty(sIV) && sIV.StartsWith("0x", StringComparison.InvariantCultureIgnoreCase))
{
sIV = sIV.Substring(2);
}
var iv = string.IsNullOrEmpty(sIV) ? null : StringToByteArray(sIV);
Key = new HlsKey(method, uri, iv);
}
private void ParseTagToken(LoadContext context)
{
if (context.ExtInf != null || context.StreamInf != null)
{
throw new PlaylistDocumentLoadException("Expected URI, but got TAG.");
}
var content = context.Token.Content;
if (content[0] == '#')
{
content = content.Substring(1);
}
var tagValue = context.TagValue = PlaylistTagValue.Parse(content);
var parser = _tagParsers.GetOrDefault(tagValue.Key);
if (parser != null)
{
parser.Invoke(tagValue, context);
}
}
private void ParseExtTargetDuration(PlaylistTagValue tag, LoadContext context)
{
TargetDuration = TimeSpan.FromSeconds(double.Parse(tag.WholeValue));
}
private void ParseExtMediaSequence(PlaylistTagValue tag, LoadContext context)
{
MediaSequence = int.Parse(tag.WholeValue);
}
private void ParseExtVersion(PlaylistTagValue tag, LoadContext context)
{
DocumentVersion = int.Parse(tag.WholeValue);
}
private void ParseStreamInf(PlaylistTagValue tag, LoadContext context)
{
context.StreamInf = tag;
}
private void ParseExtInf(PlaylistTagValue tag, LoadContext context)
{
context.ExtInf = tag;
}