diff options
Diffstat (limited to 'Emby.Server.Implementations/Library/MediaStreamSelector.cs')
| -rw-r--r-- | Emby.Server.Implementations/Library/MediaStreamSelector.cs | 97 |
1 files changed, 32 insertions, 65 deletions
diff --git a/Emby.Server.Implementations/Library/MediaStreamSelector.cs b/Emby.Server.Implementations/Library/MediaStreamSelector.cs index da0c89c13..13f0999b3 100644 --- a/Emby.Server.Implementations/Library/MediaStreamSelector.cs +++ b/Emby.Server.Implementations/Library/MediaStreamSelector.cs @@ -1,5 +1,3 @@ -#nullable disable - #pragma warning disable CS1591 using System; @@ -13,39 +11,24 @@ namespace Emby.Server.Implementations.Library { public static class MediaStreamSelector { - public static int? GetDefaultAudioStreamIndex(List<MediaStream> streams, string[] preferredLanguages, bool preferDefaultTrack) + public static int? GetDefaultAudioStreamIndex(IReadOnlyList<MediaStream> streams, IReadOnlyList<string> preferredLanguages, bool preferDefaultTrack) { - streams = GetSortedStreams(streams, MediaStreamType.Audio, preferredLanguages) - .ToList(); + var sortedStreams = GetSortedStreams(streams, MediaStreamType.Audio, preferredLanguages); if (preferDefaultTrack) { - var defaultStream = streams.FirstOrDefault(i => i.IsDefault); - - if (defaultStream != null) - { - return defaultStream.Index; - } - } - - var stream = streams.FirstOrDefault(); - - if (stream != null) - { - return stream.Index; + return sortedStreams.FirstOrDefault(i => i.IsDefault)?.Index; } - return null; + return sortedStreams.FirstOrDefault()?.Index; } public static int? GetDefaultSubtitleStreamIndex( IEnumerable<MediaStream> streams, - string[] preferredLanguages, + IReadOnlyList<string> preferredLanguages, SubtitlePlaybackMode mode, string audioTrackLanguage) { - MediaStream stream = null; - if (mode == SubtitlePlaybackMode.None) { return null; @@ -59,6 +42,7 @@ namespace Emby.Server.Implementations.Library .ThenByDescending(x => x.IsDefault) .ToList(); + MediaStream? stream = null; if (mode == SubtitlePlaybackMode.Default) { // Prefer embedded metadata over smart logic @@ -95,26 +79,27 @@ namespace Emby.Server.Implementations.Library return stream?.Index; } - private static IEnumerable<MediaStream> GetSortedStreams(IEnumerable<MediaStream> streams, MediaStreamType type, string[] languagePreferences) + private static IEnumerable<MediaStream> GetSortedStreams(IEnumerable<MediaStream> streams, MediaStreamType type, IReadOnlyList<string> languagePreferences) { // Give some preference to external text subs for better performance - return streams.Where(i => i.Type == type) + return streams + .Where(i => i.Type == type) .OrderBy(i => - { - var index = FindIndex(languagePreferences, i.Language); - - return index == -1 ? 100 : index; - }) - .ThenBy(i => GetBooleanOrderBy(i.IsDefault)) - .ThenBy(i => GetBooleanOrderBy(i.SupportsExternalStream)) - .ThenBy(i => GetBooleanOrderBy(i.IsTextSubtitleStream)) - .ThenBy(i => GetBooleanOrderBy(i.IsExternal)) - .ThenBy(i => i.Index); + { + var index = languagePreferences.FindIndex(x => string.Equals(x, i.Language, StringComparison.OrdinalIgnoreCase)); + + return index == -1 ? 100 : index; + }) + .ThenBy(i => GetBooleanOrderBy(i.IsDefault)) + .ThenBy(i => GetBooleanOrderBy(i.SupportsExternalStream)) + .ThenBy(i => GetBooleanOrderBy(i.IsTextSubtitleStream)) + .ThenBy(i => GetBooleanOrderBy(i.IsExternal)) + .ThenBy(i => i.Index); } public static void SetSubtitleStreamScores( - List<MediaStream> streams, - string[] preferredLanguages, + IReadOnlyList<MediaStream> streams, + IReadOnlyList<string> preferredLanguages, SubtitlePlaybackMode mode, string audioTrackLanguage) { @@ -123,15 +108,14 @@ namespace Emby.Server.Implementations.Library return; } - streams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages) - .ToList(); + var sortedStreams = GetSortedStreams(streams, MediaStreamType.Subtitle, preferredLanguages); var filteredStreams = new List<MediaStream>(); if (mode == SubtitlePlaybackMode.Default) { // Prefer embedded metadata over smart logic - filteredStreams = streams.Where(s => s.IsForced || s.IsDefault) + filteredStreams = sortedStreams.Where(s => s.IsForced || s.IsDefault) .ToList(); } else if (mode == SubtitlePlaybackMode.Smart) @@ -139,54 +123,37 @@ namespace Emby.Server.Implementations.Library // Prefer smart logic over embedded metadata if (!preferredLanguages.Contains(audioTrackLanguage, StringComparison.OrdinalIgnoreCase)) { - filteredStreams = streams.Where(s => !s.IsForced && preferredLanguages.Contains(s.Language, 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 = streams.Where(s => !s.IsForced) - .ToList(); + filteredStreams = sortedStreams.Where(s => !s.IsForced).ToList(); } else if (mode == SubtitlePlaybackMode.OnlyForced) { // always load the most suitable full subtitles - filteredStreams = streams.Where(s => s.IsForced).ToList(); + filteredStreams = sortedStreams.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(); - } + var iterStreams = filteredStreams.Count == 0 + ? sortedStreams.Where(s => s.IsForced && string.Equals(s.Language, audioTrackLanguage, StringComparison.OrdinalIgnoreCase)) + : filteredStreams; - foreach (var stream in filteredStreams) + foreach (var stream in iterStreams) { stream.Score = GetSubtitleScore(stream, preferredLanguages); } } - private static int FindIndex(string[] list, string value) - { - for (var i = 0; i < list.Length; i++) - { - if (string.Equals(list[i], value, StringComparison.OrdinalIgnoreCase)) - { - return i; - } - } - - return -1; - } - - private static int GetSubtitleScore(MediaStream stream, string[] languagePreferences) + private static int GetSubtitleScore(MediaStream stream, IReadOnlyList<string> languagePreferences) { var values = new List<int>(); - var index = FindIndex(languagePreferences, stream.Language); + var index = languagePreferences.FindIndex(x => string.Equals(x, stream.Language, StringComparison.OrdinalIgnoreCase)); values.Add(index == -1 ? 0 : 100 - index); |