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Luke Pulverenti
2015-03-31 12:24:16 -04:00
parent eaf70589ae
commit a025f4eefa
24 changed files with 366 additions and 133 deletions
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77
MediaBrowser.Controller/MediaEncoding/MediaStreamSelector.cs
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@@ -41,8 +41,6 @@ namespace MediaBrowser.Controller.MediaEncoding
streams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages)
.ToList();
var full = streams.Where(s => !s.IsForced);
MediaStream stream = null;
if (mode == SubtitlePlaybackMode.None)
@@ -55,13 +53,13 @@ namespace MediaBrowser.Controller.MediaEncoding
// if the audio language is not understood by the user, load their preferred subs, if there are any
if (!ContainsOrdinal(preferredLanguages, audioTrackLanguage))
{
stream = full.FirstOrDefault(s => ContainsOrdinal(preferredLanguages, s.Language));
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 = full.FirstOrDefault();
stream = streams.FirstOrDefault(s => !s.IsForced);
}
// load forced subs if we have found no suitable full subtitles
@@ -97,6 +95,77 @@ namespace MediaBrowser.Controller.MediaEncoding
.ThenBy(i => i.Index);
}
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)
{
// 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();
}
// 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);
}
}
private static int GetSubtitleScore(MediaStream stream, List<string> languagePreferences)
{
var values = new List<int>();
var index = languagePreferences.FindIndex(l => string.Equals(stream.Language, l, StringComparison.OrdinalIgnoreCase));
values.Add(index == -1 ? 0 : 100 - index);
values.Add(stream.IsDefault ? 1 : 0);
values.Add(stream.SupportsExternalStream ? 1 : 0);
values.Add(stream.IsTextSubtitleStream ? 1 : 0);
values.Add(stream.IsExternal ? 1 : 0);
values.Reverse();
var scale = 1;
var score = 0;
foreach (var value in values)
{
score += scale * (value + 1);
scale *= 10;
}
return score;
}
private static int GetBooleanOrderBy(bool value)
{
return value ? 0 : 1;