public static void SetSubtitleStreamScores(List <MediaStream> streams,
List <string> preferredLanguages,
SubtitlePlaybackMode mode,
string audioTrackLanguage)
{
if (mode == SubtitlePlaybackMode.None)
{
return;
}
streams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages)
.ToList();
var filteredStreams = new List <MediaStream>();
if (mode == SubtitlePlaybackMode.Default)
{
// Prefer embedded metadata over smart logic
filteredStreams = streams.Where(s => s.IsForced || s.IsDefault)
.ToList();
}
else if (mode == SubtitlePlaybackMode.Smart)
{
// Prefer smart logic over embedded metadata
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (!ContainsOrdinal(preferredLanguages, audioTrackLanguage))
{
filteredStreams = streams.Where(s => !s.IsForced && ContainsOrdinal(preferredLanguages, s.Language))
.ToList();
}
}
else if (mode == SubtitlePlaybackMode.Always)
{
// always load the most suitable full subtitles
filteredStreams = streams.Where(s => !s.IsForced)
.ToList();
}
else if (mode == SubtitlePlaybackMode.OnlyForced)
{
// always load the most suitable full subtitles
filteredStreams = streams.Where(s => s.IsForced).ToList();
}
// load forced subs if we have found no suitable full subtitles
if (filteredStreams.Count == 0)
{
filteredStreams = streams
.Where(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
.ToList();
}
foreach (var stream in filteredStreams)
{
stream.Score = GetSubtitleScore(stream, preferredLanguages);
}
}
public static int?GetDefaultSubtitleStreamIndex(
IEnumerable <MediaStream> streams,
string[] preferredLanguages,
SubtitlePlaybackMode mode,
string audioTrackLanguage)
{
MediaStream stream = null;
if (mode == SubtitlePlaybackMode.None)
{
return(null);
}
var sortedStreams = streams
.Where(i => i.Type == MediaStreamType.Subtitle)
.OrderByDescending(x => x.IsExternal)
.ThenByDescending(x => x.IsForced && string.Equals(x.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
.ThenByDescending(x => x.IsForced)
.ThenByDescending(x => x.IsDefault)
.ToList();
if (mode == SubtitlePlaybackMode.Default)
{
// Prefer embedded metadata over smart logic
stream = sortedStreams.FirstOrDefault(s => s.IsExternal || s.IsForced || s.IsDefault);
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (stream == null && !preferredLanguages.Contains(audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
{
stream = sortedStreams.FirstOrDefault(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparison.OrdinalIgnoreCase));
}
}
else if (mode == SubtitlePlaybackMode.Smart)
{
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (!preferredLanguages.Contains(audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
{
stream = streams.FirstOrDefault(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparison.OrdinalIgnoreCase)) ??
streams.FirstOrDefault(s => preferredLanguages.Contains(s.Language, StringComparison.OrdinalIgnoreCase));
}
}
else if (mode == SubtitlePlaybackMode.Always)
{
// always load the most suitable full subtitles
stream = sortedStreams.FirstOrDefault(s => !s.IsForced);
}
else if (mode == SubtitlePlaybackMode.OnlyForced)
{
// always load the most suitable full subtitles
stream = sortedStreams.FirstOrDefault(x => x.IsForced);
}
// load forced subs if we have found no suitable full subtitles
stream ??= sortedStreams.FirstOrDefault(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase));
return(stream?.Index);
}
public static void SetSubtitleStreamScores(
IReadOnlyList <MediaStream> streams,
IReadOnlyList <string> preferredLanguages,
SubtitlePlaybackMode mode,
string audioTrackLanguage)
{
if (mode == SubtitlePlaybackMode.None)
{
return;
}
var sortedStreams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages);
var filteredStreams = new List <MediaStream>();
if (mode == SubtitlePlaybackMode.Default)
{
// Prefer embedded metadata over smart logic
filteredStreams = sortedStreams.Where(s => s.IsForced || s.IsDefault)
.ToList();
}
else if (mode == SubtitlePlaybackMode.Smart)
{
// Prefer smart logic over embedded metadata
if (!preferredLanguages.Contains(audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
{
filteredStreams = sortedStreams.Where(s => !s.IsForced && preferredLanguages.Contains(s.Language, StringComparison.OrdinalIgnoreCase))
.ToList();
}
}
else if (mode == SubtitlePlaybackMode.Always)
{
// always load the most suitable full subtitles
filteredStreams = sortedStreams.Where(s => !s.IsForced).ToList();
}
else if (mode == SubtitlePlaybackMode.OnlyForced)
{
// always load the most suitable full subtitles
filteredStreams = sortedStreams.Where(s => s.IsForced).ToList();
}
// load forced subs if we have found no suitable full subtitles
var iterStreams = filteredStreams.Count == 0
? sortedStreams.Where(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
: filteredStreams;
foreach (var stream in iterStreams)
{
stream.Score = GetSubtitleScore(stream, preferredLanguages);
}
}
public static int?GetDefaultSubtitleStreamIndex(List <MediaStream> streams,
IEnumerable <string> preferredLanguages,
SubtitlePlaybackMode mode,
string audioTrackLanguage)
{
var languages = preferredLanguages.ToList();
streams = GetSortedStreams(streams, MediaStreamType.Subtitle, languages).ToList();
var full = streams.Where(s => !s.IsForced);
var forced = streams.Where(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase));
MediaStream stream = null;
if (mode == SubtitlePlaybackMode.None)
{
return(null);
}
if (mode == SubtitlePlaybackMode.Default)
{
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (!ContainsOrdinal(languages, audioTrackLanguage))
{
stream = full.FirstOrDefault(s => ContainsOrdinal(languages, s.Language));
}
}
else if (mode == SubtitlePlaybackMode.Always)
{
// always load the most suitable full subtitles
stream = full.FirstOrDefault();
}
// load forced subs if we have found no suitable full subtitles
stream = stream ?? forced.FirstOrDefault();
if (stream != null)
{
return(stream.Index);
}
return(null);
}
public static int? GetDefaultSubtitleStreamIndex(List<MediaStream> streams,
IEnumerable<string> preferredLanguages,
SubtitlePlaybackMode mode,
string audioTrackLanguage)
{
var languages = preferredLanguages.ToList();
streams = GetSortedStreams(streams, MediaStreamType.Subtitle, languages).ToList();
var full = streams.Where(s => !s.IsForced);
var forced = streams.Where(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase));
MediaStream stream = null;
if (mode == SubtitlePlaybackMode.None)
{
return null;
}
if (mode == SubtitlePlaybackMode.Default)
{
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (!ContainsOrdinal(languages, audioTrackLanguage))
{
stream = full.FirstOrDefault(s => ContainsOrdinal(languages, s.Language));
}
}
else if (mode == SubtitlePlaybackMode.Always)
{
// always load the most suitable full subtitles
stream = full.FirstOrDefault();
}
// load forced subs if we have found no suitable full subtitles
stream = stream ?? forced.FirstOrDefault();
if (stream != null)
{
return stream.Index;
}
return null;
}
public static int?GetDefaultSubtitleStreamIndex(List <MediaStream> streams,
string[] preferredLanguages,
SubtitlePlaybackMode mode,
string audioTrackLanguage)
{
streams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages)
.ToList();
MediaStream stream = null;
if (mode == SubtitlePlaybackMode.None)
{
return(null);
}
if (mode == SubtitlePlaybackMode.Default)
{
// Prefer embedded metadata over smart logic
stream = streams.FirstOrDefault(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase)) ??
streams.FirstOrDefault(s => s.IsForced) ??
streams.FirstOrDefault(s => s.IsDefault);
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (stream == null && !preferredLanguages.Contains(audioTrackLanguage, StringComparer.OrdinalIgnoreCase))
{
stream = streams.Where(s => !s.IsForced).FirstOrDefault(s => preferredLanguages.Contains(s.Language, StringComparer.OrdinalIgnoreCase));
}
}
else if (mode == SubtitlePlaybackMode.Smart)
{
// Prefer smart logic over embedded metadata
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (!preferredLanguages.Contains(audioTrackLanguage, StringComparer.OrdinalIgnoreCase))
{
stream = streams.Where(s => !s.IsForced).FirstOrDefault(s => preferredLanguages.Contains(s.Language, StringComparer.OrdinalIgnoreCase)) ??
streams.FirstOrDefault(s => preferredLanguages.Contains(s.Language, StringComparer.OrdinalIgnoreCase));
}
}
else if (mode == SubtitlePlaybackMode.Always)
{
// always load the most suitable full subtitles
stream = streams.FirstOrDefault(s => !s.IsForced);
}
else if (mode == SubtitlePlaybackMode.OnlyForced)
{
// always load the most suitable full subtitles
stream = streams.FirstOrDefault(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase)) ??
streams.FirstOrDefault(s => s.IsForced);
}
// load forced subs if we have found no suitable full subtitles
stream = stream ?? streams.FirstOrDefault(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase));
if (stream != null)
{
return(stream.Index);
}
return(null);
}
public static int? GetDefaultSubtitleStreamIndex(List<MediaStream> streams,
List<string> preferredLanguages,
SubtitlePlaybackMode mode,
string audioTrackLanguage)
{
streams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages)
.ToList();
MediaStream stream = null;
if (mode == SubtitlePlaybackMode.None)
{
return null;
}
if (mode == SubtitlePlaybackMode.Default)
{
// Prefer embedded metadata over smart logic
stream = streams.FirstOrDefault(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase)) ??
streams.FirstOrDefault(s => s.IsForced) ??
streams.FirstOrDefault(s => s.IsDefault);
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (stream == null && !ContainsOrdinal(preferredLanguages, audioTrackLanguage))
{
stream = streams.Where(s => !s.IsForced).FirstOrDefault(s => ContainsOrdinal(preferredLanguages, s.Language));
}
}
else if (mode == SubtitlePlaybackMode.Smart)
{
// Prefer smart logic over embedded metadata
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (!ContainsOrdinal(preferredLanguages, audioTrackLanguage))
{
stream = streams.Where(s => !s.IsForced).FirstOrDefault(s => ContainsOrdinal(preferredLanguages, s.Language));
}
}
else if (mode == SubtitlePlaybackMode.Always)
{
// always load the most suitable full subtitles
stream = streams.FirstOrDefault(s => !s.IsForced);
}
else if (mode == SubtitlePlaybackMode.OnlyForced)
{
// always load the most suitable full subtitles
stream = streams.FirstOrDefault(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase)) ??
streams.FirstOrDefault(s => s.IsForced);
}
// load forced subs if we have found no suitable full subtitles
stream = stream ?? streams.FirstOrDefault(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase));
if (stream != null)
{
return stream.Index;
}
return null;
}
public static void SetSubtitleStreamScores(List<MediaStream> streams,
List<string> preferredLanguages,
SubtitlePlaybackMode mode,
string audioTrackLanguage)
{
if (mode == SubtitlePlaybackMode.None)
{
return;
}
streams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages)
.ToList();
var filteredStreams = new List<MediaStream>();
if (mode == SubtitlePlaybackMode.Default)
{
// Prefer embedded metadata over smart logic
filteredStreams = streams.Where(s => s.IsForced || s.IsDefault)
.ToList();
}
else if (mode == SubtitlePlaybackMode.Smart)
{
// Prefer smart logic over embedded metadata
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (!ContainsOrdinal(preferredLanguages, audioTrackLanguage))
{
filteredStreams = streams.Where(s => !s.IsForced && ContainsOrdinal(preferredLanguages, s.Language))
.ToList();
}
}
else if (mode == SubtitlePlaybackMode.Always)
{
// always load the most suitable full subtitles
filteredStreams = streams.Where(s => !s.IsForced)
.ToList();
}
else if (mode == SubtitlePlaybackMode.OnlyForced)
{
// always load the most suitable full subtitles
filteredStreams = streams.Where(s => s.IsForced).ToList();
}
// load forced subs if we have found no suitable full subtitles
if (filteredStreams.Count == 0)
{
filteredStreams = streams
.Where(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase))
.ToList();
}
foreach (var stream in filteredStreams)
{
stream.Score = GetSubtitleScore(stream, preferredLanguages);
}
}
