-
Notifications
You must be signed in to change notification settings - Fork 37
/
AutoSkip.cs
235 lines (202 loc) · 7.8 KB
/
AutoSkip.cs
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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using System.Timers;
using ConfusedPolarBear.Plugin.IntroSkipper.Configuration;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Session;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Plugins;
using MediaBrowser.Model.Session;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
namespace ConfusedPolarBear.Plugin.IntroSkipper;
/// <summary>
/// Automatically skip past introduction sequences.
/// Commands clients to seek to the end of the intro as soon as they start playing it.
/// </summary>
public class AutoSkip : IHostedService, IDisposable
{
private readonly object _sentSeekCommandLock = new();
private ILogger<AutoSkip> _logger;
private IUserDataManager _userDataManager;
private ISessionManager _sessionManager;
private System.Timers.Timer _playbackTimer = new(1000);
private Dictionary<string, bool> _sentSeekCommand;
/// <summary>
/// Initializes a new instance of the <see cref="AutoSkip"/> class.
/// </summary>
/// <param name="userDataManager">User data manager.</param>
/// <param name="sessionManager">Session manager.</param>
/// <param name="logger">Logger.</param>
public AutoSkip(
IUserDataManager userDataManager,
ISessionManager sessionManager,
ILogger<AutoSkip> logger)
{
_userDataManager = userDataManager;
_sessionManager = sessionManager;
_logger = logger;
_sentSeekCommand = new Dictionary<string, bool>();
}
private void AutoSkipChanged(object? sender, BasePluginConfiguration e)
{
var configuration = (PluginConfiguration)e;
var newState = configuration.AutoSkip;
_logger.LogDebug("Setting playback timer enabled to {NewState}", newState);
_playbackTimer.Enabled = newState;
}
private void UserDataManager_UserDataSaved(object? sender, UserDataSaveEventArgs e)
{
var itemId = e.Item.Id;
var newState = false;
var episodeNumber = e.Item.IndexNumber.GetValueOrDefault(-1);
// Ignore all events except playback start & end
if (e.SaveReason != UserDataSaveReason.PlaybackStart && e.SaveReason != UserDataSaveReason.PlaybackFinished)
{
return;
}
// Lookup the session for this item.
SessionInfo? session = null;
try
{
foreach (var needle in _sessionManager.Sessions)
{
if (needle.UserId == e.UserId && needle.NowPlayingItem.Id == itemId)
{
session = needle;
break;
}
}
if (session == null)
{
_logger.LogInformation("Unable to find session for {Item}", itemId);
return;
}
}
catch (Exception ex) when (ex is NullReferenceException || ex is ResourceNotFoundException)
{
return;
}
// If this is the first episode in the season, and SkipFirstEpisode is false, pretend that we've already sent the seek command for this playback session.
if (!Plugin.Instance!.Configuration.SkipFirstEpisode && episodeNumber == 1)
{
newState = true;
}
// Reset the seek command state for this device.
lock (_sentSeekCommandLock)
{
var device = session.DeviceId;
_logger.LogDebug("Resetting seek command state for session {Session}", device);
_sentSeekCommand[device] = newState;
}
}
private void PlaybackTimer_Elapsed(object? sender, ElapsedEventArgs e)
{
foreach (var session in _sessionManager.Sessions)
{
var deviceId = session.DeviceId;
var itemId = session.NowPlayingItem.Id;
var position = session.PlayState.PositionTicks / TimeSpan.TicksPerSecond;
// Don't send the seek command more than once in the same session.
lock (_sentSeekCommandLock)
{
if (_sentSeekCommand.TryGetValue(deviceId, out var sent) && sent)
{
_logger.LogTrace("Already sent seek command for session {Session}", deviceId);
continue;
}
}
// Assert that an intro was detected for this item.
if (!Plugin.Instance!.Intros.TryGetValue(itemId, out var intro) || !intro.Valid)
{
continue;
}
// Seek is unreliable if called at the very start of an episode.
var adjustedStart = Math.Max(5, intro.IntroStart);
_logger.LogTrace(
"Playback position is {Position}, intro runs from {Start} to {End}",
position,
adjustedStart,
intro.IntroEnd);
if (position < adjustedStart || position > intro.IntroEnd)
{
continue;
}
// Notify the user that an introduction is being skipped for them.
var notificationText = Plugin.Instance!.Configuration.AutoSkipNotificationText;
if (!string.IsNullOrWhiteSpace(notificationText))
{
_sessionManager.SendMessageCommand(
session.Id,
session.Id,
new MessageCommand()
{
Header = string.Empty, // some clients require header to be a string instead of null
Text = notificationText,
TimeoutMs = 2000,
},
CancellationToken.None);
}
_logger.LogDebug("Sending seek command to {Session}", deviceId);
var introEnd = (long)intro.IntroEnd - Plugin.Instance!.Configuration.SecondsOfIntroToPlay;
_sessionManager.SendPlaystateCommand(
session.Id,
session.Id,
new PlaystateRequest
{
Command = PlaystateCommand.Seek,
ControllingUserId = session.UserId.ToString("N"),
SeekPositionTicks = introEnd * TimeSpan.TicksPerSecond,
},
CancellationToken.None);
// Flag that we've sent the seek command so that it's not sent repeatedly
lock (_sentSeekCommandLock)
{
_logger.LogTrace("Setting seek command state for session {Session}", deviceId);
_sentSeekCommand[deviceId] = true;
}
}
}
/// <summary>
/// Dispose.
/// </summary>
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
/// <summary>
/// Protected dispose.
/// </summary>
/// <param name="disposing">Dispose.</param>
protected virtual void Dispose(bool disposing)
{
if (!disposing)
{
return;
}
_playbackTimer.Stop();
_playbackTimer.Dispose();
}
/// <inheritdoc />
public Task StartAsync(CancellationToken cancellationToken)
{
_logger.LogDebug("Setting up automatic skipping");
_userDataManager.UserDataSaved += UserDataManager_UserDataSaved;
Plugin.Instance!.ConfigurationChanged += AutoSkipChanged;
// Make the timer restart automatically and set enabled to match the configuration value.
_playbackTimer.AutoReset = true;
_playbackTimer.Elapsed += PlaybackTimer_Elapsed;
AutoSkipChanged(null, Plugin.Instance!.Configuration);
return Task.CompletedTask;
}
/// <inheritdoc />
public Task StopAsync(CancellationToken cancellationToken)
{
_userDataManager.UserDataSaved -= UserDataManager_UserDataSaved;
return Task.CompletedTask;
}
}