1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Movies;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Controller.Subtitles;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Providers.MediaInfo
{
public class SubtitleDownloader
{
private readonly ILogger _logger;
private readonly ISubtitleManager _subtitleManager;
public SubtitleDownloader(ILogger logger, ISubtitleManager subtitleManager)
{
_logger = logger;
_subtitleManager = subtitleManager;
}
public async Task<List<string>> DownloadSubtitles(Video video,
List<MediaStream> mediaStreams,
bool skipIfEmbeddedSubtitlesPresent,
bool skipIfAudioTrackMatches,
bool requirePerfectMatch,
IEnumerable<string> languages,
CancellationToken cancellationToken)
{
if (video.LocationType != LocationType.FileSystem ||
video.VideoType != VideoType.VideoFile)
{
return new List<string>();
}
VideoContentType mediaType;
if (video is Episode)
{
mediaType = VideoContentType.Episode;
}
else if (video is Movie)
{
mediaType = VideoContentType.Movie;
}
else
{
// These are the only supported types
return new List<string>();
}
var downloadedLanguages = new List<string>();
foreach (var lang in languages)
{
try
{
var downloaded = await DownloadSubtitles(video, mediaStreams, skipIfEmbeddedSubtitlesPresent, skipIfAudioTrackMatches, requirePerfectMatch, lang, mediaType, cancellationToken)
.ConfigureAwait(false);
if (downloaded)
{
downloadedLanguages.Add(lang);
}
}
catch (Exception ex)
{
_logger.ErrorException("Error downloading subtitles", ex);
}
}
return downloadedLanguages;
}
private async Task<bool> DownloadSubtitles(Video video,
List<MediaStream> mediaStreams,
bool skipIfEmbeddedSubtitlesPresent,
bool skipIfAudioTrackMatches,
bool requirePerfectMatch,
string language,
VideoContentType mediaType,
CancellationToken cancellationToken)
{
// There's already subtitles for this language
if (mediaStreams.Any(i => i.Type == MediaStreamType.Subtitle && i.IsTextSubtitleStream && string.Equals(i.Language, language, StringComparison.OrdinalIgnoreCase)))
{
return false;
}
var audioStreams = mediaStreams.Where(i => i.Type == MediaStreamType.Audio).ToList();
var defaultAudioStreams = audioStreams.Where(i => i.IsDefault).ToList();
// If none are marked as default, just take a guess
if (defaultAudioStreams.Count == 0)
{
defaultAudioStreams = audioStreams.Take(1).ToList();
}
// There's already a default audio stream for this language
if (skipIfAudioTrackMatches &&
defaultAudioStreams.Any(i => string.Equals(i.Language, language, StringComparison.OrdinalIgnoreCase)))
{
return false;
}
// There's an internal subtitle stream for this language
if (skipIfEmbeddedSubtitlesPresent &&
mediaStreams.Any(i => i.Type == MediaStreamType.Subtitle && !i.IsExternal && string.Equals(i.Language, language, StringComparison.OrdinalIgnoreCase)))
{
return false;
}
var request = new SubtitleSearchRequest
{
ContentType = mediaType,
IndexNumber = video.IndexNumber,
Language = language,
MediaPath = video.Path,
Name = video.Name,
ParentIndexNumber = video.ParentIndexNumber,
ProductionYear = video.ProductionYear,
ProviderIds = video.ProviderIds,
// Stop as soon as we find something
SearchAllProviders = false,
IsPerfectMatch = requirePerfectMatch
};
var episode = video as Episode;
if (episode != null)
{
request.IndexNumberEnd = episode.IndexNumberEnd;
request.SeriesName = episode.SeriesName;
}
try
{
var searchResults = await _subtitleManager.SearchSubtitles(request, cancellationToken).ConfigureAwait(false);
var result = searchResults.FirstOrDefault();
if (result != null)
{
await _subtitleManager.DownloadSubtitles(video, result.Id, cancellationToken)
.ConfigureAwait(false);
return true;
}
}
catch (Exception ex)
{
_logger.ErrorException("Error downloading subtitles", ex);
}
return false;
}
}
}
|
