public async Task <IDictionary <long, Program> > LoadAsync(CancellationToken cancellationToken)
{
ICollection <Uri> playlists = this.Playlists;
IDictionary <long, Program> dictionary;
foreach (Uri uri in (IEnumerable <Uri>)playlists)
{
try
{
M3U8Parser parser = new M3U8Parser();
if (null != this._playlistWebReader)
{
this._playlistWebReader.Dispose();
}
this._playlistWebReader = this._webReaderManager.CreateReader(uri, ContentKind.Playlist, (IWebReader)null, (ContentType)null);
Uri actualPlaylist = await M3U8ParserExtensions.ParseAsync(parser, this._playlistWebReader, this._retryManager, uri, cancellationToken).ConfigureAwait(false);
dictionary = await this.LoadAsync(this._playlistWebReader, parser, cancellationToken);
goto label_14;
}
catch (WebException ex)
{
Debug.WriteLine("HlsProgramManager.LoadAsync: " + ex.Message);
}
}
dictionary = HlsProgramManager.NoPrograms;
label_14:
return(dictionary);
}
private async Task <M3U8Parser> FetchPlaylistAsync(CancellationToken cancellationToken)
{
ICollection <Uri> urls = this.Urls;
M3U8Parser m3U8Parser;
if (urls == null || urls.Count < 1)
{
m3U8Parser = (M3U8Parser)null;
}
else
{
foreach (Uri playlist in (IEnumerable <Uri>)urls)
{
this.UpdateSubPlaylistCache(playlist);
cancellationToken.ThrowIfCancellationRequested();
WebResponse webResponse = (WebResponse)null;
if (null == this.StreamMetadata)
{
webResponse = new WebResponse();
}
M3U8Parser parsedPlaylist = await this._subPlaylistCache.ReadAsync <M3U8Parser>((Func <Uri, byte[], M3U8Parser>)((actualUri, bytes) =>
{
cancellationToken.ThrowIfCancellationRequested();
if (bytes.Length < 1)
{
return((M3U8Parser)null);
}
M3U8Parser parser = new M3U8Parser();
using (MemoryStream memoryStream = new MemoryStream(bytes))
M3U8ParserExtensions.Parse(parser, actualUri, (Stream)memoryStream, (Encoding)null);
return(parser);
}), cancellationToken, webResponse).ConfigureAwait(false);
if (null != parsedPlaylist)
{
if (null != webResponse)
{
this.StreamMetadata = this._webMetadataFactory.CreateStreamMetadata(webResponse, (ContentType)null);
}
m3U8Parser = parsedPlaylist;
goto label_16;
}
}
m3U8Parser = (M3U8Parser)null;
}
label_16:
return(m3U8Parser);
}
private ISegment CreateStreamSegment(M3U8Parser.M3U8Uri uri, CancellationToken cancellationToken)
{
SubStreamSegment segment = new SubStreamSegment(M3U8ParserExtensions.ResolveUrl(this._parser, uri.Uri), this._parser.BaseUrl);
if (this._mediaSequence.HasValue)
{
SubStreamSegment subStreamSegment = segment;
long? nullable1 = this._mediaSequence;
long num = (long)this._segmentIndex;
long? nullable2 = nullable1.HasValue ? new long?(nullable1.GetValueOrDefault() + num) : new long?();
subStreamSegment.MediaSequence = nullable2;
}
++this._segmentIndex;
M3U8TagInstance[] m3U8TagInstanceArray = uri.Tags;
if (m3U8TagInstanceArray == null || 0 == m3U8TagInstanceArray.Length)
{
return((ISegment)segment);
}
ExtinfTagInstance extinfTagInstance = M3U8Tags.ExtXInf.Find((IEnumerable <M3U8TagInstance>)m3U8TagInstanceArray);
if (null != extinfTagInstance)
{
segment.Duration = new TimeSpan?(TimeSpan.FromSeconds((double)extinfTagInstance.Duration));
}
ByterangeTagInstance byteRange = M3U8Tags.ExtXByteRange.Find((IEnumerable <M3U8TagInstance>)m3U8TagInstanceArray);
if (null != byteRange)
{
this.HandleByteRange(segment, byteRange);
}
IEnumerable <ExtKeyTagInstance> all = M3U8Tags.ExtXKey.FindAll((IEnumerable <M3U8TagInstance>)m3U8TagInstanceArray);
if (null != all)
{
this.HandleKey(segment, all, cancellationToken);
}
return((ISegment)segment);
}
private void HandleKey(SubStreamSegment segment, IEnumerable <ExtKeyTagInstance> extKeys, CancellationToken cancellationToken)
{
ExtKeyTagInstance[] extKeyTagInstanceArray = Enumerable.ToArray <ExtKeyTagInstance>(extKeys);
if (extKeyTagInstanceArray.Length < 1)
{
return;
}
string url = (string)null;
byte[] iv = (byte[])null;
foreach (ExtKeyTagInstance extKeyTagInstance in extKeyTagInstanceArray)
{
string b = M3U8TagInstanceExtensions.AttributeObject <string>((M3U8TagInstance)extKeyTagInstance, ExtKeySupport.AttrMethod);
if (string.Equals("NONE", b, StringComparison.OrdinalIgnoreCase))
{
url = (string)null;
}
else
{
if (!string.Equals("AES-128", b, StringComparison.OrdinalIgnoreCase))
{
if (string.Equals("SAMPLE-AES", b, StringComparison.OrdinalIgnoreCase))
{
throw new NotImplementedException("Method SAMPLE-AES decryption is not implemented");
}
throw new NotSupportedException("Unknown decryption method type: " + b);
}
string str = M3U8TagInstanceExtensions.AttributeObject <string>((M3U8TagInstance)extKeyTagInstance, ExtKeySupport.AttrUri);
if (null != str)
{
url = str;
}
byte[] numArray = M3U8TagInstanceExtensions.AttributeObject <byte[]>((M3U8TagInstance)extKeyTagInstance, ExtKeySupport.AttrIv);
if (null != numArray)
{
iv = numArray;
}
}
}
if (null == url)
{
return;
}
if (null == iv)
{
iv = new byte[16];
long num = segment.MediaSequence ?? (long)(this._segmentIndex - 1);
iv[15] = (byte)((ulong)num & (ulong)byte.MaxValue);
iv[14] = (byte)((ulong)(num >> 8) & (ulong)byte.MaxValue);
iv[13] = (byte)((ulong)(num >> 16) & (ulong)byte.MaxValue);
iv[12] = (byte)((ulong)(num >> 24) & (ulong)byte.MaxValue);
}
Func <Stream, CancellationToken, Task <Stream> > filter = segment.AsyncStreamFilter;
Uri uri = M3U8ParserExtensions.ResolveUrl(this._parser, url);
segment.AsyncStreamFilter = (Func <Stream, CancellationToken, Task <Stream> >)(async(stream, ct) =>
{
if (null != filter)
{
stream = await filter(stream, ct).ConfigureAwait(false);
}
byte[] key;
if (!this._keyCache.TryGetValue(uri, out key))
{
key = await this.LoadKeyAsync(uri, cancellationToken).ConfigureAwait(false);
if (16 != key.Length)
{
throw new FormatException("AES-128 key length mismatch: " + (object)key.Length);
}
this._keyCache[uri] = key;
}
Debug.WriteLine("Segment AES-128: key {0} iv {1}", (object)BitConverter.ToString(key), (object)BitConverter.ToString(iv));
return(this._platformServices.Aes128DecryptionFilter(stream, key, iv));
});
}
private async Task <IDictionary <long, Program> > LoadAsync(IWebReader webReader, M3U8Parser parser, CancellationToken cancellationToken)
{
Dictionary <string, HlsProgramManager.MediaGroup> audioStreams = new Dictionary <string, HlsProgramManager.MediaGroup>();
foreach (M3U8TagInstance m3U8TagInstance in parser.GlobalTags)
{
if (M3U8Tags.ExtXMedia == m3U8TagInstance.Tag)
{
try
{
if (null != M3U8TagInstanceExtensions.Attribute <string>(m3U8TagInstance, ExtMediaSupport.AttrType, "AUDIO"))
{
HlsProgramManager.AddMedia(parser.BaseUrl, m3U8TagInstance, audioStreams);
}
}
catch (NullReferenceException ex)
{
}
}
}
Dictionary <long, Program> programs = new Dictionary <long, Program>();
bool hasSegments = false;
foreach (M3U8Parser.M3U8Uri m3U8Uri in parser.Playlist)
{
if (m3U8Uri.Tags == null || m3U8Uri.Tags.Length < 1)
{
hasSegments = true;
}
else
{
ExtStreamInfTagInstance streamInfTagInstance = M3U8Tags.ExtXStreamInf.Find((IEnumerable <M3U8TagInstance>)m3U8Uri.Tags);
long programId = long.MinValue;
HlsProgramManager.MediaGroup mediaGroup = (HlsProgramManager.MediaGroup)null;
if (null != streamInfTagInstance)
{
M3U8AttributeValueInstance <long> attributeValueInstance1 = M3U8TagInstanceExtensions.Attribute <long>((M3U8TagInstance)streamInfTagInstance, ExtStreamInfSupport.AttrProgramId);
if (null != attributeValueInstance1)
{
programId = attributeValueInstance1.Value;
}
string key = M3U8TagInstanceExtensions.AttributeObject <string>((M3U8TagInstance)streamInfTagInstance, ExtStreamInfSupport.AttrAudio);
if (null != key)
{
audioStreams.TryGetValue(key, out mediaGroup);
}
Uri uri = M3U8ParserExtensions.ResolveUrl(parser, m3U8Uri.Uri);
M3U8AttributeValueInstance <long> attributeValueInstance2 = M3U8TagInstanceExtensions.Attribute <long>((M3U8TagInstance)streamInfTagInstance, ExtStreamInfSupport.AttrBandwidth);
ResolutionAttributeInstance attributeInstance = M3U8TagInstanceExtensions.AttributeInstance <ResolutionAttributeInstance>((M3U8TagInstance)streamInfTagInstance, ExtStreamInfSupport.AttrResolution);
Uri baseUrl = parser.BaseUrl;
Program program = HlsProgramManager.GetProgram((IDictionary <long, Program>)programs, programId, baseUrl);
IHlsProgramStream hlsProgramStream = this._programStreamFactory.Create((ICollection <Uri>) new Uri[1]
{
uri
}, webReader);
PlaylistSubProgram playlistSubProgram1 = new PlaylistSubProgram((IProgram)program, (IProgramStream)hlsProgramStream);
playlistSubProgram1.Bandwidth = attributeValueInstance2 == null ? 0L : attributeValueInstance2.Value;
playlistSubProgram1.Playlist = uri;
playlistSubProgram1.AudioGroup = mediaGroup;
PlaylistSubProgram playlistSubProgram2 = playlistSubProgram1;
if (null != attributeInstance)
{
playlistSubProgram2.Width = new int?(attributeInstance.X);
playlistSubProgram2.Height = new int?(attributeInstance.Y);
}
program.SubPrograms.Add((ISubProgram)playlistSubProgram2);
}
else
{
hasSegments = true;
}
}
}
if (hasSegments)
{
Program program = HlsProgramManager.GetProgram((IDictionary <long, Program>)programs, long.MinValue, parser.BaseUrl);
IHlsProgramStream hlsProgramStream = this._programStreamFactory.Create((ICollection <Uri>) new Uri[1]
{
webReader.RequestUri
}, webReader);
await hlsProgramStream.SetParserAsync(parser, cancellationToken).ConfigureAwait(false);
PlaylistSubProgram subProgram = new PlaylistSubProgram((IProgram)program, (IProgramStream)hlsProgramStream);
program.SubPrograms.Add((ISubProgram)subProgram);
}
return((IDictionary <long, Program>)programs);
}
