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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Data.Enums;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Globalization;
using MediaBrowser.Model.Tasks;
using Microsoft.Extensions.Logging;
namespace Emby.Server.Implementations.ScheduledTasks.Tasks;
/// <summary>
/// The audio normalization task.
/// </summary>
public partial class AudioNormalizationTask : IScheduledTask
{
private readonly IItemRepository _itemRepository;
private readonly ILibraryManager _libraryManager;
private readonly IMediaEncoder _mediaEncoder;
private readonly IConfigurationManager _configurationManager;
private readonly ILocalizationManager _localization;
private readonly ILogger<AudioNormalizationTask> _logger;
/// <summary>
/// Initializes a new instance of the <see cref="AudioNormalizationTask"/> class.
/// </summary>
/// <param name="itemRepository">Instance of the <see cref="IItemRepository"/> interface.</param>
/// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
/// <param name="mediaEncoder">Instance of the <see cref="IMediaEncoder"/> interface.</param>
/// <param name="configurationManager">Instance of the <see cref="IConfigurationManager"/> interface.</param>
/// <param name="localizationManager">Instance of the <see cref="ILocalizationManager"/> interface.</param>
/// <param name="logger">Instance of the <see cref="ILogger{AudioNormalizationTask}"/> interface.</param>
public AudioNormalizationTask(
IItemRepository itemRepository,
ILibraryManager libraryManager,
IMediaEncoder mediaEncoder,
IConfigurationManager configurationManager,
ILocalizationManager localizationManager,
ILogger<AudioNormalizationTask> logger)
{
_itemRepository = itemRepository;
_libraryManager = libraryManager;
_mediaEncoder = mediaEncoder;
_configurationManager = configurationManager;
_localization = localizationManager;
_logger = logger;
}
/// <inheritdoc />
public string Name => _localization.GetLocalizedString("TaskAudioNormalization");
/// <inheritdoc />
public string Description => _localization.GetLocalizedString("TaskAudioNormalizationDescription");
/// <inheritdoc />
public string Category => _localization.GetLocalizedString("TasksLibraryCategory");
/// <inheritdoc />
public string Key => "AudioNormalization";
[GeneratedRegex(@"I:\s+(.*?)\s+LUFS")]
private static partial Regex LUFSRegex();
/// <inheritdoc />
public async Task ExecuteAsync(IProgress<double> progress, CancellationToken cancellationToken)
{
foreach (var library in _libraryManager.RootFolder.Children)
{
var libraryOptions = _libraryManager.GetLibraryOptions(library);
if (!libraryOptions.EnableLUFSScan)
{
continue;
}
// Album gain
var albums = _libraryManager.GetItemList(new InternalItemsQuery
{
IncludeItemTypes = [BaseItemKind.MusicAlbum],
Parent = library,
Recursive = true
});
foreach (var a in albums)
{
if (a.NormalizationGain.HasValue || a.LUFS.HasValue)
{
continue;
}
// Skip albums that don't have multiple tracks, album gain is useless here
var albumTracks = ((MusicAlbum)a).Tracks.Where(x => x.IsFileProtocol).ToList();
if (albumTracks.Count <= 1)
{
continue;
}
var tempFile = Path.Join(_configurationManager.GetTranscodePath(), Guid.NewGuid() + ".concat");
var inputLines = albumTracks.Select(x => string.Format(CultureInfo.InvariantCulture, "file '{0}'", x.Path.Replace("'", @"'\''", StringComparison.Ordinal)));
await File.WriteAllLinesAsync(tempFile, inputLines, cancellationToken).ConfigureAwait(false);
a.LUFS = await CalculateLUFSAsync(
string.Format(CultureInfo.InvariantCulture, "-f concat -safe 0 -i \"{0}\"", tempFile),
cancellationToken).ConfigureAwait(false);
File.Delete(tempFile);
}
_itemRepository.SaveItems(albums, cancellationToken);
// Track gain
var tracks = _libraryManager.GetItemList(new InternalItemsQuery
{
MediaTypes = [MediaType.Audio],
IncludeItemTypes = [BaseItemKind.Audio],
Parent = library,
Recursive = true
});
foreach (var t in tracks)
{
if (t.NormalizationGain.HasValue || t.LUFS.HasValue || !t.IsFileProtocol)
{
continue;
}
t.LUFS = await CalculateLUFSAsync(string.Format(CultureInfo.InvariantCulture, "-i \"{0}\"", t.Path.Replace("\"", "\\\"", StringComparison.Ordinal)), cancellationToken);
}
_itemRepository.SaveItems(tracks, cancellationToken);
}
}
/// <inheritdoc />
public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
{
return
[
new TaskTriggerInfo
{
Type = TaskTriggerInfo.TriggerInterval,
IntervalTicks = TimeSpan.FromHours(24).Ticks
}
];
}
private async Task<float?> CalculateLUFSAsync(string inputArgs, CancellationToken cancellationToken)
{
var args = $"-hide_banner {inputArgs} -af ebur128=framelog=verbose -f null -";
using (var process = new Process()
{
StartInfo = new ProcessStartInfo
{
FileName = _mediaEncoder.EncoderPath,
Arguments = args,
RedirectStandardOutput = false,
RedirectStandardError = true
},
})
{
try
{
_logger.LogDebug("Starting ffmpeg with arguments: {Arguments}", args);
process.Start();
}
catch (Exception ex)
{
_logger.LogError(ex, "Error starting ffmpeg with arguments: {Arguments}", args);
return null;
}
using var reader = process.StandardError;
var output = await reader.ReadToEndAsync(cancellationToken).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
MatchCollection split = LUFSRegex().Matches(output);
if (split.Count != 0)
{
return float.Parse(split[0].Groups[1].ValueSpan, CultureInfo.InvariantCulture.NumberFormat);
}
_logger.LogError("Failed to find LUFS value in output:\n{Output}", output);
return null;
}
}
}
|
