public FormDiscInfo(Disc disc)
{
InitializeComponent();
_defaultJacketSizeMode = pictureBoxJacket.SizeMode;
var fs = disc.FileSystem;
var metadata = disc.Metadata;
labelQuickSummary.Text = GenerateQuickSummary(metadata, fs);
if (fs.Files.JacketImageSmall != null)
{
_hasSmallJacketImage = true;
_smallJacketImagePath = fs.Files.JacketImageSmall.FullName;
pictureBoxJacket.ImageLocation = _smallJacketImagePath;
toolStripMenuItemJacketImagePath.Text = _smallJacketImagePath;
}
groupBoxJacket.Visible = _hasSmallJacketImage;
discInfoMetadataPanel.SetDisc(disc);
discInfoFeaturesPanel.SetDisc(disc);
this.EnableSelectAll();
}
public void SetDisc(Disc disc)
{
var fs = disc.FileSystem;
var metadata = disc.Metadata;
var raw = metadata.Raw;
var der = metadata.Derived;
// textboxes
InitTextAndIcon(iconHardwareVolumeLabel, textBoxHardwareVolumeLabel, raw.HardwareVolumeLabel);
InitTextAndIcon(iconAnyDVDDiscInf, textBoxAnyDVDDiscInf, raw.DiscInf != null ? raw.DiscInf.ToString() : null);
InitTextAndIcon(iconDboxTitle, textBoxDboxTitle, raw.DboxTitle);
InitTextAndIcon(iconVISAN, textBoxVISAN, GetIsanText(raw.V_ISAN));
InitTextAndIcon(iconAllBdmtTitles, textBoxAllBdmtTitles, GetBdmtTitles(raw.AllBdmtTitles));
InitTextAndIcon(iconVolumeLabel, textBoxVolumeLabel, der.VolumeLabel);
InitTextAndIcon(iconVolumeLabelSanitized, textBoxVolumeLabelSanitized, der.VolumeLabelSanitized);
InitTextAndIcon(iconDboxTitleSanitized, textBoxDboxTitleSanitized, der.DboxTitleSanitized);
InitTextAndIcon(iconIsan, textBoxIsan, GetIsanText(raw.ISAN));
InitTextAndIcon(iconValidBdmtTitles, textBoxValidBdmtTitles, GetBdmtTitles(der.ValidBdmtTitles));
// buttons
InitButton(buttonHardwareVolumeLabel, fs.Directories.Root);
InitButton(buttonAnyDVDDiscInf, fs.Files.AnyDVDDiscInf);
InitButton(buttonDboxTitle, fs.Files.Dbox);
InitButton(buttonVISAN, fs.Files.MCMF);
InitButton(buttonAllBdmtTitles, fs.Directories.BDMT);
InitButton(buttonVolumeLabel, fs.Directories.Root);
InitButton(buttonVolumeLabelSanitized, fs.Directories.Root);
InitButton(buttonDboxTitleSanitized, fs.Files.Dbox);
InitButton(buttonIsan, fs.Files.MCMF);
InitButton(buttonValidBdmtTitles, fs.Directories.BDMT);
}
public static void Transform(BDInfo.BDROM bdrom, Disc disc)
{
var fs = new DiscFileSystem
{
Directories = new DiscFileSystem.DiscDirectories
{
Root = bdrom.DirectoryRoot,
BDMV = bdrom.DirectoryBDMV,
CLIPINF = bdrom.DirectoryCLIPINF,
PLAYLIST = bdrom.DirectoryPLAYLIST,
STREAM = bdrom.DirectorySTREAM,
SSIF = bdrom.DirectorySSIF,
BDMT = GetBDMTDirectory(bdrom.DirectoryBDMV),
BDJO = bdrom.DirectoryBDJO,
SNP = bdrom.DirectorySNP,
ANY = GetDirectory("ANY!", bdrom.DirectoryRoot),
MAKEMKV = GetDirectory("MAKEMKV", bdrom.DirectoryRoot),
AACS = null /* assigned below */
},
Files = new DiscFileSystem.DiscFiles
{
AnyDVDDiscInf = GetFile("disc.inf", bdrom.DirectoryRoot),
MCMF = null, /* assigned below */
BDMT = null, /* assigned below */
Dbox = GetFile("FilmIndex.xml", bdrom.DirectoryRoot)
}
};
fs.Directories.AACS = GetAACSDirectory(fs);
fs.Files.MCMF = GetFileOrBackup("mcmf.xml", fs.Directories.AACS);
fs.Files.BDMT = GetFilesByPattern("bdmt_???.xml", fs.Directories.BDMT);
disc.FileSystem = fs;
}
public static void Transform(Disc disc)
{
var raw = new DiscMetadata.RawMetadata
{
HardwareVolumeLabel = GetHardwareVolumeLabel(disc),
DiscInf = GetAnyDVDDiscInf(disc),
AllBdmtTitles = GetAllBdmtTitles(disc),
DboxTitle = GetDboxTitle(disc),
V_ISAN = GetVISAN(disc)
};
var derived = new DiscMetadata.DerivedMetadata
{
VolumeLabel = GetVolumeLabel(raw),
VolumeLabelSanitized = GetVolumeLabelSanitized(raw),
ValidBdmtTitles = GetValidBdmtTitles(raw.AllBdmtTitles),
DboxTitleSanitized = GetDboxTitleSanitized(raw),
SearchQueries = new List<SearchQuery>() /* populated by DiscTransformer */
};
var metadata = new DiscMetadata
{
Raw = raw,
Derived = derived
};
disc.Metadata = metadata;
}
private static void TransformPrimaryLanguage(Disc disc)
{
if (disc.PrimaryLanguage != null) return;
disc.PrimaryLanguage = disc.Playlists.SelectMany(playlist => playlist.AudioTracks)
.Select(track => track.Language)
.GroupBy(language => language)
.OrderByDescending(grouping => grouping.Count())
.Select(grouping => grouping.Key)
.FirstOrDefault();
}
public void SetDisc(Disc disc)
{
var features = disc.Features;
SetFeature(iconBDPlus, labelBDPlus, features.IsBDPlus);
SetFeature(iconBDJava, labelBDJava, features.IsBDJava);
SetFeature(icon3D, label3D, features.Is3D);
SetFeature(iconDbox, labelDbox, features.IsDbox);
SetFeature(iconDCopy, labelDCopy, features.IsDCopy);
SetFeature(iconPSP, labelPSP, features.IsPSP);
}
private static void TransformTitle(Disc disc)
{
var derived = disc.Metadata.Derived;
var validBdmtTitles = derived.ValidBdmtTitles;
if (validBdmtTitles.ContainsKey(disc.PrimaryLanguage))
{
AddSearchableTitleIfNotEmpty(disc, validBdmtTitles[disc.PrimaryLanguage]);
}
AddSearchableTitleIfNotEmpty(disc, derived.DboxTitleSanitized);
AddSearchableTitleIfNotEmpty(disc, derived.VolumeLabelSanitized);
}
public static void Transform(Disc disc)
{
var fs = disc.FileSystem;
var root = fs.Directories.Root;
var features = new DiscFeatures
{
IsBDPlus = IsBDPlus(root),
IsBDJava = IsBDJava(fs),
Is3D = Is3D(fs),
IsDbox = IsDbox(fs),
IsDCopy = IsDCopy(fs),
IsPSP = IsPSP(fs)
};
disc.Features = features;
}
public FormDiscInfo(Disc disc)
{
InitializeComponent();
var fs = disc.FileSystem;
var metadata = disc.Metadata;
labelQuickSummary.Text = string.Format("{0} {1}",
metadata.Derived.VolumeLabel,
fs.Directories.Root.FullName
);
discInfoMetadataPanel.SetDisc(disc);
discInfoFeaturesPanel.SetDisc(disc);
this.EnableSelectAll();
}
public void SetDisc(Disc disc)
{
var fs = disc.FileSystem;
var meta = disc.Metadata;
var raw = meta.Raw;
var der = meta.Derived;
var inf = raw.DiscInf;
string discInfVolumeLabel = null;
string regionName = null;
string regionDesc = null;
if (inf != null)
{
discInfVolumeLabel = inf.VolumeLabel;
regionName = inf.Region.GetLongName();
regionDesc = inf.Region.GetDescription();
}
new ToolTip().SetToolTip(textBoxAnyDVDDiscInfSanitized, regionDesc);
// textboxes
InitTextAndIcon(iconHardwareVolumeLabel, textBoxHardwareVolumeLabel, raw.HardwareVolumeLabel);
InitTextAndIcon(iconAnyDVDDiscInf, textBoxAnyDVDDiscInf, discInfVolumeLabel);
InitTextAndIcon(iconDboxTitle, textBoxDboxTitle, raw.DboxTitle);
InitTextAndIcon(iconVISAN, textBoxVISAN, GetIsanText(raw.V_ISAN));
InitTextAndIcon(iconAllBdmtTitles, textBoxAllBdmtTitles, GetBdmtTitles(raw.AllBdmtTitles));
InitText(textBoxVolumeLabelSanitized, der.VolumeLabelSanitized);
InitText(textBoxAnyDVDDiscInfSanitized, regionName);
InitText(textBoxDboxTitleSanitized, der.DboxTitleSanitized);
InitText(textBoxIsan, GetIsanText(raw.ISAN));
InitText(textBoxValidBdmtTitles, GetBdmtTitles(der.ValidBdmtTitles));
// buttons
InitButton(buttonVolumeLabelSanitized, fs.Directories.Root);
InitButton(buttonAnyDVDDiscInfSanitized, fs.Files.AnyDVDDiscInf);
InitButton(buttonDboxTitleSanitized, fs.Files.DBox);
InitButton(buttonIsan, fs.Files.MCMF);
InitButton(buttonValidBdmtTitles, fs.Directories.BDMT);
}
private static IDictionary<Language, string> GetAllBdmtTitles(Disc disc)
{
var titles = new Dictionary<Language, string>();
foreach (var file in disc.FileSystem.Files.BDMT)
{
var filenameMatch = BdmtFileNameRegex.Match(file.Name);
var iso639_2 = filenameMatch.Groups[1].Value;
var language = Language.FromCode(iso639_2);
var xml = string.Join("", File.ReadLines(file.FullName));
if (!BdmtXmlTitleRegex.IsMatch(xml))
continue;
var xmlMatch = BdmtXmlTitleRegex.Match(xml);
var title = xmlMatch.Groups[1].Value.Trim();
titles[language] = title;
}
return titles;
}
private static void TransformLanguageList(Disc disc)
{
var playlists = disc.Playlists;
var languages = disc.Languages;
var primaryLanguage = disc.PrimaryLanguage;
// Sort languages alphabetically
var languagesWithDups =
playlists
.SelectMany(playlist => playlist.Tracks)
.Select(track => track.Language)
.Where(language => language != null && language != Language.Undetermined);
languages.Clear();
languages.AddRange(new HashSet<Language>(languagesWithDups).OrderBy(language => language.Name));
if (primaryLanguage == null || primaryLanguage == Language.Undetermined) return;
// Move primary language to the beginning of the list
languages.Remove(primaryLanguage);
languages.Insert(0, primaryLanguage);
}
public static Disc Transform(BDInfo.BDROM bdrom)
{
var tsPlaylistFiles = PlaylistTransformer.Transform(bdrom.PlaylistFiles);
var disc =
new Disc
{
PrimaryLanguage = bdrom.DiscLanguage,
Playlists = PlaylistTransformer.Transform(tsPlaylistFiles)
};
DiscFileSystemTransformer.Transform(bdrom, disc);
DiscFeaturesTransformer.Transform(disc);
DiscMetadataTransformer.Transform(disc);
// Data gathering
TransformPrimaryLanguage(disc);
TransformVideoLanguages(disc);
TransformLanguageList(disc);
TransformTitle(disc);
return disc;
}
private static string GetHardwareVolumeLabel(Disc disc)
{
var root = disc.FileSystem.Directories.Root;
var parent = Directory.GetParent(root.FullName);
if (parent == null)
{
// path is the root directory
var drives = DriveInfo.GetDrives().ToArray();
var drive = drives.FirstOrDefault(info => info.Name == root.FullName);
if (drive != null)
{
return drive.VolumeLabel;
}
}
return root.Name;
}
private static string GetDboxTitle(Disc disc)
{
var dbox = disc.FileSystem.Files.Dbox;
if (dbox == null)
return null;
string xml;
var encoding = FileUtils.DetectEncodingAuto(dbox.FullName, out xml);
// Replace newlines with spaces
xml = Regex.Replace(xml, @"[\n\r\f]+", " ");
if (!DboxTitleRegex.IsMatch(xml))
return null;
var match = DboxTitleRegex.Match(xml);
var title = SanitizeTitle(match.Groups[1].Value);
return title;
}
internal static Job CreateMovieJob()
{
var metadata = new DiscMetadata
{
Derived = new DiscMetadata.DerivedMetadata
{
VolumeLabel = "EMPIRE_STRIKES_BACK"
}
};
var disc = new Disc
{
Metadata = metadata,
Playlists = new List<Playlist>
{
new Playlist
{
Tracks = new List<Track>
{
new Track
{
IsVideo = true,
Codec = Codec.AVC,
Type = TrackType.MainFeature,
VideoFormat = TSVideoFormat.VIDEOFORMAT_1080p,
AspectRatio = TSAspectRatio.ASPECT_16_9,
Index = 0,
IndexOfType = 0,
IsBestGuess = true,
Keep = true,
Language = Language.English
},
new Track
{
IsAudio = true,
Codec = Codec.DTSHDMA,
Type = TrackType.MainFeature,
ChannelCount = 6.1,
Index = 1,
IndexOfType = 0,
IsBestGuess = true,
Keep = true,
Language = Language.English
},
new Track
{
IsSubtitle = true,
Codec = Codec.PGS,
Type = TrackType.MainFeature,
Index = 2,
IndexOfType = 0,
IsBestGuess = true,
Keep = true,
Language = Language.English
},
}
}
}
};
var job = new Job(disc)
{
ReleaseMediumType = ReleaseMediumType.Movie,
SearchQuery = new SearchQuery
{
Title = "Star Wars: Episode V - The Empire Strikes Back",
Year = 1980,
Language = Language.English
}
};
job.Movies.Add(new Movie
{
IsSelected = true,
Title = "Star Wars: Episode V - The Empire Strikes Back",
ReleaseYear = 1980,
Id = 1891,
Url = "http://www.themoviedb.org/movie/1891-star-wars-episode-v-the-empire-strikes-back"
});
return job;
}
internal static Job CreateTVShowJob()
{
var metadata = new DiscMetadata
{
Derived = new DiscMetadata.DerivedMetadata
{
VolumeLabel = "SCRUBS_S1_D1"
}
};
var disc = new Disc
{
Metadata = metadata,
Playlists = new List<Playlist>
{
new Playlist
{
Tracks = new List<Track>
{
new Track
{
IsVideo = true,
Codec = Codec.AVC,
Type = TrackType.MainFeature,
VideoFormat = TSVideoFormat.VIDEOFORMAT_1080p,
AspectRatio = TSAspectRatio.ASPECT_16_9,
Index = 0,
IndexOfType = 0,
IsBestGuess = true,
Keep = true,
Language = Language.English
},
new Track
{
IsAudio = true,
Codec = Codec.DTSHDMA,
Type = TrackType.MainFeature,
ChannelCount = 5.1,
Index = 1,
IndexOfType = 0,
IsBestGuess = true,
Keep = true,
Language = Language.English
},
new Track
{
IsSubtitle = true,
Codec = Codec.PGS,
Type = TrackType.MainFeature,
Index = 2,
IndexOfType = 0,
IsBestGuess = true,
Keep = true,
Language = Language.English
},
}
}
}
};
var job = new Job(disc)
{
ReleaseMediumType = ReleaseMediumType.TVShow,
SearchQuery = new SearchQuery
{
Title = "Scrubs",
Year = 2001,
Language = Language.English
}
};
var tvShow = new TVShow
{
IsSelected = true,
Title = "Scrubs",
Id = 76156,
Url = "http://thetvdb.com/?tab=series&id=76156&lid=7",
SelectedEpisodeIndex = 0
};
tvShow.Episodes.AddRange(new[]
{
new TVShow.Episode
{
SeasonNumber = 1,
EpisodeNumber = 1,
Title = "My First Day",
Id = 184602,
ReleaseDate = DateTime.Parse("2001-10-02")
}
});
job.TVShows.Add(tvShow);
return job;
}
private static void DetectMainFeaturePlaylistTrackTypes(Disc disc)
{
foreach (var playlist in disc.Playlists.Where(playlist => playlist.IsMainFeature))
{
// Additional video tracks are usually PiP commentary
foreach (var videoTrack in playlist.VideoTracks.Skip(1))
{
videoTrack.Type = TrackType.Commentary;
}
var audioLanguages = new HashSet<Language>(playlist.AudioTracks.Select(track => track.Language)).ToArray();
var subtitleLanguages = new HashSet<Language>(playlist.SubtitleTracks.Select(track => track.Language)).ToArray();
// Detect type of audio tracks (per-language)
foreach (var audioLanguage in audioLanguages)
{
var lang = audioLanguage;
var audioTracksWithLang = playlist.AudioTracks.Where(track => track.Language == lang).ToArray();
// Detect type of audio tracks
for (var i = 0; i < audioTracksWithLang.Length; i++)
{
var audioTrack = audioTracksWithLang[i];
if (IsMainFeatureAudioTrack(audioTrack, i))
audioTrack.Type = TrackType.MainFeature;
if (IsCommentaryAudioTrack(audioTrack, i))
audioTrack.Type = TrackType.Commentary;
}
}
// Detect type of audio tracks (per-language)
// Assume the first subtitle track of every language is the Main Feature,
// and all other subtitle tracks of that language are Commentary
foreach (var subtitleLanguage in subtitleLanguages)
{
var lang = subtitleLanguage;
var subtitleTracksWithLang = playlist.SubtitleTracks.Where(track => track.Language == lang).ToArray();
// Detect type of subtitle tracks
for (var i = 0; i < subtitleTracksWithLang.Length; i++)
{
var subtitleTrack = subtitleTracksWithLang[i];
subtitleTrack.Type = i == 0 ? TrackType.MainFeature : TrackType.Commentary;
var codec = subtitleTrack.Codec;
if (!codec.IsKnown || !codec.IsMuxable)
{
subtitleTrack.Type = TrackType.Misc;
}
}
}
}
}
private static void DetectCommentaryPlaylistTrackTypes(Disc disc)
{
var tracks = disc.Playlists.Where(playlist => playlist.IsVideoCommentary).SelectMany(playlist => playlist.Tracks);
foreach (var track in tracks)
{
track.Type = TrackType.Commentary;
}
}
private static void DetectPlaylistTypes(Disc disc)
{
var maxLength = GetMaxPlaylistLength(disc);
foreach (var playlist in disc.Playlists)
{
if (playlist.IsMainFeaturePlaylist(maxLength))
playlist.Type = TrackType.MainFeature;
if (playlist.IsSpecialFeaturePlaylist(maxLength))
playlist.Type = TrackType.SpecialFeature;
}
}
private void TransformPlaylistQuality(Disc disc)
{
// TODO: ONLY LOOK AT MAIN MOVIE PLAYLISTS
var bestAudioPlaylist = disc.Playlists.OrderByDescending(p => p.MaxAudioChannels).FirstOrDefault();
if (bestAudioPlaylist == null) return;
var bestVideoPlaylist = disc.Playlists.OrderByDescending(p => p.MaxAvailableVideoResolution).FirstOrDefault();
if (bestVideoPlaylist == null) return;
var maxChannels = bestAudioPlaylist.MaxAudioChannels;
var maxHeight = bestVideoPlaylist.MaxAvailableVideoResolution;
var maxQualityPlaylists = disc.Playlists.Where(playlist => playlist.MaxAudioChannels == maxChannels && playlist.MaxAvailableVideoResolution == maxHeight);
foreach (var playlist in maxQualityPlaylists)
{
playlist.IsMaxQuality = true;
}
}
private static VIsan GetVISAN(Disc disc)
{
var file = disc.FileSystem.Files.MCMF;
if (file == null)
return null;
var xml = string.Join(" ", File.ReadAllLines(file.FullName));
if (!ISANContentIdRegex.IsMatch(xml))
return null;
var match = ISANContentIdRegex.Match(xml);
var contentId = match.Groups[1].Value;
return VIsan.TryParse(contentId);
}
private static void DetectSpecialFeaturePlaylistTrackTypes(Disc disc)
{
var tracks = disc.Playlists.Where(playlist => playlist.IsSpecialFeature).SelectMany(playlist => playlist.Tracks);
foreach (var track in tracks)
{
track.Type = TrackType.SpecialFeature;
}
}
private static TimeSpan GetMaxPlaylistLength(Disc disc)
{
return disc.Playlists
.Where(playlist => playlist.IsPossibleMainFeature && !playlist.IsBogus)
.Select(playlist => playlist.Length)
.OrderByDescending(length => length)
.FirstOrDefault();
}
private static void SelectBestTracks(Disc disc)
{
foreach (var playlist in disc.Playlists)
{
// Video
playlist.VideoTracks.First().IsBestGuess = true;
playlist.VideoTracks.First().Keep = true;
// Audio
var mainFeatureAudioTracks = playlist.AudioTracks.Where(track => track.IsMainFeature).ToList();
var primaryLanguageAudioTracks = mainFeatureAudioTracks.Where(track => track.Language == disc.PrimaryLanguage).ToList();
var firstAudioTrack = playlist.AudioTracks.FirstOrDefault();
if (primaryLanguageAudioTracks.Any())
SelectTracks(primaryLanguageAudioTracks);
else if (mainFeatureAudioTracks.Any())
SelectTrack(primaryLanguageAudioTracks.First());
else if (firstAudioTrack != null)
SelectTrack(firstAudioTrack);
// Subtitles
var mainFeatureSubtitleTracks = playlist.SubtitleTracks.Where(track => track.IsMainFeature).ToList();
var primaryLanguageSubtitleTracks = mainFeatureSubtitleTracks.Where(track => track.Language == disc.PrimaryLanguage).ToList();
var firstSubtitleTrack = playlist.SubtitleTracks.FirstOrDefault();
if (primaryLanguageSubtitleTracks.Any())
SelectTracks(primaryLanguageSubtitleTracks);
else if (mainFeatureSubtitleTracks.Any())
SelectTrack(mainFeatureSubtitleTracks.First());
else if (firstSubtitleTrack != null)
SelectTrack(firstSubtitleTrack);
}
}
private void FindDuplicatePlaylists(Disc disc)
{
var bdamPlaylistMap = disc.Playlists.ToDictionary(playlist => playlist.FileName);
var bdinfoDuplicateMap = disc.Playlists.ToMultiValueDictionary(GetPlaylistDupKey);
var dups = (from key in bdinfoDuplicateMap.Keys
where bdinfoDuplicateMap[key].Count > 1
select bdinfoDuplicateMap[key].OrderBy(playlist => playlist.Tracks.Count(track => track.IsHidden)))
.SelectMany(sortedFiles => sortedFiles.Skip(1));
foreach (var playlist in dups)
{
playlist.IsDuplicate = true;
bdamPlaylistMap[playlist.FileName].IsDuplicate = true;
}
}
private static AnyDVDDiscInf GetAnyDVDDiscInf(Disc disc)
{
var discInf = disc.FileSystem.Files.AnyDVDDiscInf;
if (discInf == null)
return null;
var parser = new FileIniDataParser();
var data = parser.LoadFile(discInf.FullName);
var discData = data["disc"];
var anyDVDDiscInf = new AnyDVDDiscInf
{
AnyDVDVersion = discData["version"],
VolumeLabel = discData["label"],
Region = RegionCodeParser.Parse(discData["region"])
};
return anyDVDDiscInf;
}
private void FindDuplicatePlaylists(Disc disc)
{
var bdamPlaylistMap = disc.Playlists.ToDictionary(playlist => playlist.FileName);
var bdinfoDuplicateMap = disc.Playlists.ToMultiValueDictionary(GetPlaylistDupKey);
var dups = (from key in bdinfoDuplicateMap.Keys
where bdinfoDuplicateMap[key].Count > 1
select bdinfoDuplicateMap[key].OrderBy(GetDupSortValue))
.SelectMany(SkipBestDup);
foreach (var playlist in dups)
{
playlist.IsDuplicate = true;
bdamPlaylistMap[playlist.FileName].IsDuplicate = true;
}
}
public Job(Disc disc)
{
Disc = disc;
}
private void TransformPlaylistQuality(Disc disc)
{
// TODO: Fix or remove quality detection
// Only consider feature-length playlists when searching for highest quality tracks
var maxLength = GetMaxPlaylistLength(disc);
var allPlaylists = disc.Playlists;
var featureLengthPlaylists = allPlaylists.Where(playlist => playlist.IsFeatureLength(maxLength)).ToArray();
var bestAudioPlaylist = featureLengthPlaylists.OrderByDescending(p => p.MaxAudioChannels).FirstOrDefault();
if (bestAudioPlaylist == null) return;
var bestVideoPlaylist = featureLengthPlaylists.OrderByDescending(p => p.MaxAvailableVideoResolution).FirstOrDefault();
if (bestVideoPlaylist == null) return;
var maxChannels = bestAudioPlaylist.MaxAudioChannels;
var maxHeight = bestVideoPlaylist.MaxAvailableVideoResolution;
var maxQualityPlaylists = allPlaylists.Where(playlist => IsMaxQualityPlaylist(playlist, maxChannels, maxHeight)).ToArray();
foreach (var playlist in maxQualityPlaylists)
{
playlist.IsMaxQuality = true;
}
}