diff --git a/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs b/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs index b8ae9f3ff6..f49876cca4 100644 --- a/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs +++ b/MediaBrowser.Controller/SyncPlay/Queue/PlayQueueManager.cs @@ -3,6 +3,7 @@ using System; using System.Collections.Generic; using System.Linq; +using Jellyfin.Extensions; using MediaBrowser.Model.SyncPlay; namespace MediaBrowser.Controller.SyncPlay.Queue @@ -19,10 +20,16 @@ namespace MediaBrowser.Controller.SyncPlay.Queue private const int NoPlayingItemIndex = -1; /// - /// Random number generator used to shuffle lists. + /// The sorted playlist. /// - /// The random number generator. - private readonly Random _randomNumberGenerator = new Random(); + /// The sorted playlist, or play queue of the group. + private List _sortedPlaylist = new List(); + + /// + /// The shuffled playlist. + /// + /// The shuffled playlist, or play queue of the group. + private List _shuffledPlaylist = new List(); /// /// Initializes a new instance of the class. @@ -56,18 +63,6 @@ namespace MediaBrowser.Controller.SyncPlay.Queue /// The repeat mode. public GroupRepeatMode RepeatMode { get; private set; } = GroupRepeatMode.RepeatNone; - /// - /// Gets or sets the sorted playlist. - /// - /// The sorted playlist, or play queue of the group. - private List SortedPlaylist { get; set; } = new List(); - - /// - /// Gets or sets the shuffled playlist. - /// - /// The shuffled playlist, or play queue of the group. - private List ShuffledPlaylist { get; set; } = new List(); - /// /// Checks if an item is playing. /// @@ -92,14 +87,14 @@ namespace MediaBrowser.Controller.SyncPlay.Queue /// The new items of the playlist. public void SetPlaylist(IReadOnlyList items) { - SortedPlaylist.Clear(); - ShuffledPlaylist.Clear(); + _sortedPlaylist.Clear(); + _shuffledPlaylist.Clear(); - SortedPlaylist = CreateQueueItemsFromArray(items); + _sortedPlaylist = CreateQueueItemsFromArray(items); if (ShuffleMode.Equals(GroupShuffleMode.Shuffle)) { - ShuffledPlaylist = new List(SortedPlaylist); - Shuffle(ShuffledPlaylist); + _shuffledPlaylist = new List(_sortedPlaylist); + _shuffledPlaylist.Shuffle(); } PlayingItemIndex = NoPlayingItemIndex; @@ -114,10 +109,10 @@ namespace MediaBrowser.Controller.SyncPlay.Queue { var newItems = CreateQueueItemsFromArray(items); - SortedPlaylist.AddRange(newItems); + _sortedPlaylist.AddRange(newItems); if (ShuffleMode.Equals(GroupShuffleMode.Shuffle)) { - ShuffledPlaylist.AddRange(newItems); + _shuffledPlaylist.AddRange(newItems); } LastChange = DateTime.UtcNow; @@ -130,26 +125,26 @@ namespace MediaBrowser.Controller.SyncPlay.Queue { if (PlayingItemIndex == NoPlayingItemIndex) { - ShuffledPlaylist = new List(SortedPlaylist); - Shuffle(ShuffledPlaylist); + _shuffledPlaylist = new List(_sortedPlaylist); + _shuffledPlaylist.Shuffle(); } else if (ShuffleMode.Equals(GroupShuffleMode.Sorted)) { // First time shuffle. - var playingItem = SortedPlaylist[PlayingItemIndex]; - ShuffledPlaylist = new List(SortedPlaylist); - ShuffledPlaylist.RemoveAt(PlayingItemIndex); - Shuffle(ShuffledPlaylist); - ShuffledPlaylist.Insert(0, playingItem); + var playingItem = _sortedPlaylist[PlayingItemIndex]; + _shuffledPlaylist = new List(_sortedPlaylist); + _shuffledPlaylist.RemoveAt(PlayingItemIndex); + _shuffledPlaylist.Shuffle(); + _shuffledPlaylist.Insert(0, playingItem); PlayingItemIndex = 0; } else { // Re-shuffle playlist. - var playingItem = ShuffledPlaylist[PlayingItemIndex]; - ShuffledPlaylist.RemoveAt(PlayingItemIndex); - Shuffle(ShuffledPlaylist); - ShuffledPlaylist.Insert(0, playingItem); + var playingItem = _shuffledPlaylist[PlayingItemIndex]; + _shuffledPlaylist.RemoveAt(PlayingItemIndex); + _shuffledPlaylist.Shuffle(); + _shuffledPlaylist.Insert(0, playingItem); PlayingItemIndex = 0; } @@ -164,11 +159,11 @@ namespace MediaBrowser.Controller.SyncPlay.Queue { if (PlayingItemIndex != NoPlayingItemIndex) { - var playingItem = ShuffledPlaylist[PlayingItemIndex]; - PlayingItemIndex = SortedPlaylist.IndexOf(playingItem); + var playingItem = _shuffledPlaylist[PlayingItemIndex]; + PlayingItemIndex = _sortedPlaylist.IndexOf(playingItem); } - ShuffledPlaylist.Clear(); + _shuffledPlaylist.Clear(); ShuffleMode = GroupShuffleMode.Sorted; LastChange = DateTime.UtcNow; @@ -181,16 +176,16 @@ namespace MediaBrowser.Controller.SyncPlay.Queue public void ClearPlaylist(bool clearPlayingItem) { var playingItem = GetPlayingItem(); - SortedPlaylist.Clear(); - ShuffledPlaylist.Clear(); + _sortedPlaylist.Clear(); + _shuffledPlaylist.Clear(); LastChange = DateTime.UtcNow; if (!clearPlayingItem && playingItem != null) { - SortedPlaylist.Add(playingItem); + _sortedPlaylist.Add(playingItem); if (ShuffleMode.Equals(GroupShuffleMode.Shuffle)) { - ShuffledPlaylist.Add(playingItem); + _shuffledPlaylist.Add(playingItem); } PlayingItemIndex = 0; @@ -212,14 +207,14 @@ namespace MediaBrowser.Controller.SyncPlay.Queue if (ShuffleMode.Equals(GroupShuffleMode.Shuffle)) { var playingItem = GetPlayingItem(); - var sortedPlayingItemIndex = SortedPlaylist.IndexOf(playingItem); + var sortedPlayingItemIndex = _sortedPlaylist.IndexOf(playingItem); // Append items to sorted and shuffled playlist as they are. - SortedPlaylist.InsertRange(sortedPlayingItemIndex + 1, newItems); - ShuffledPlaylist.InsertRange(PlayingItemIndex + 1, newItems); + _sortedPlaylist.InsertRange(sortedPlayingItemIndex + 1, newItems); + _shuffledPlaylist.InsertRange(PlayingItemIndex + 1, newItems); } else { - SortedPlaylist.InsertRange(PlayingItemIndex + 1, newItems); + _sortedPlaylist.InsertRange(PlayingItemIndex + 1, newItems); } LastChange = DateTime.UtcNow; @@ -298,8 +293,8 @@ namespace MediaBrowser.Controller.SyncPlay.Queue { var playingItem = GetPlayingItem(); - SortedPlaylist.RemoveAll(item => playlistItemIds.Contains(item.PlaylistItemId)); - ShuffledPlaylist.RemoveAll(item => playlistItemIds.Contains(item.PlaylistItemId)); + _sortedPlaylist.RemoveAll(item => playlistItemIds.Contains(item.PlaylistItemId)); + _shuffledPlaylist.RemoveAll(item => playlistItemIds.Contains(item.PlaylistItemId)); LastChange = DateTime.UtcNow; @@ -313,7 +308,7 @@ namespace MediaBrowser.Controller.SyncPlay.Queue { // Was first element, picking next if available. // Default to no playing item otherwise. - PlayingItemIndex = SortedPlaylist.Count > 0 ? 0 : NoPlayingItemIndex; + PlayingItemIndex = _sortedPlaylist.Count > 0 ? 0 : NoPlayingItemIndex; } return true; @@ -363,8 +358,8 @@ namespace MediaBrowser.Controller.SyncPlay.Queue /// public void Reset() { - SortedPlaylist.Clear(); - ShuffledPlaylist.Clear(); + _sortedPlaylist.Clear(); + _shuffledPlaylist.Clear(); PlayingItemIndex = NoPlayingItemIndex; ShuffleMode = GroupShuffleMode.Sorted; RepeatMode = GroupRepeatMode.RepeatNone; @@ -460,7 +455,7 @@ namespace MediaBrowser.Controller.SyncPlay.Queue } PlayingItemIndex++; - if (PlayingItemIndex >= SortedPlaylist.Count) + if (PlayingItemIndex >= _sortedPlaylist.Count) { if (RepeatMode.Equals(GroupRepeatMode.RepeatAll)) { @@ -468,7 +463,7 @@ namespace MediaBrowser.Controller.SyncPlay.Queue } else { - PlayingItemIndex = SortedPlaylist.Count - 1; + PlayingItemIndex = _sortedPlaylist.Count - 1; return false; } } @@ -494,7 +489,7 @@ namespace MediaBrowser.Controller.SyncPlay.Queue { if (RepeatMode.Equals(GroupRepeatMode.RepeatAll)) { - PlayingItemIndex = SortedPlaylist.Count - 1; + PlayingItemIndex = _sortedPlaylist.Count - 1; } else { @@ -507,23 +502,6 @@ namespace MediaBrowser.Controller.SyncPlay.Queue return true; } - /// - /// Shuffles a given list. - /// - /// The list to shuffle. - private void Shuffle(IList list) - { - int n = list.Count; - while (n > 1) - { - n--; - int k = _randomNumberGenerator.Next(n + 1); - T value = list[k]; - list[k] = list[n]; - list[n] = value; - } - } - /// /// Creates a list from the array of items. Each item is given an unique playlist identifier. /// @@ -548,11 +526,11 @@ namespace MediaBrowser.Controller.SyncPlay.Queue { if (ShuffleMode.Equals(GroupShuffleMode.Shuffle)) { - return ShuffledPlaylist; + return _shuffledPlaylist; } else { - return SortedPlaylist; + return _sortedPlaylist; } } @@ -568,11 +546,11 @@ namespace MediaBrowser.Controller.SyncPlay.Queue } else if (ShuffleMode.Equals(GroupShuffleMode.Shuffle)) { - return ShuffledPlaylist[PlayingItemIndex]; + return _shuffledPlaylist[PlayingItemIndex]; } else { - return SortedPlaylist[PlayingItemIndex]; + return _sortedPlaylist[PlayingItemIndex]; } } } diff --git a/src/Jellyfin.Extensions/ShuffleExtensions.cs b/src/Jellyfin.Extensions/ShuffleExtensions.cs index 4e481983f3..33c492053a 100644 --- a/src/Jellyfin.Extensions/ShuffleExtensions.cs +++ b/src/Jellyfin.Extensions/ShuffleExtensions.cs @@ -8,8 +8,6 @@ namespace Jellyfin.Extensions /// public static class ShuffleExtensions { - private static readonly Random _rng = new Random(); - /// /// Shuffles the items in a list. /// @@ -17,7 +15,7 @@ namespace Jellyfin.Extensions /// The type. public static void Shuffle(this IList list) { - list.Shuffle(_rng); + list.Shuffle(Random.Shared); } ///