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108 lines
4.0 KiB
C#
108 lines
4.0 KiB
C#
// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using osu.Framework.Allocation;
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using osu.Framework.Audio;
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using osu.Framework.Audio.Track;
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using osu.Framework.Configuration;
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using osu.Framework.Graphics;
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using osu.Framework.IO.Stores;
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using osu.Game.Beatmaps;
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namespace osu.Game.Audio
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{
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/// <summary>
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/// A central store for the retrieval of <see cref="PreviewTrack"/>s.
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/// </summary>
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public class PreviewTrackManager : Component
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{
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private readonly BindableDouble muteBindable = new BindableDouble();
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private AudioManager audio;
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private TrackManager trackManager;
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private TrackManagerPreviewTrack current;
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[BackgroundDependencyLoader]
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private void load(AudioManager audio, FrameworkConfigManager config)
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{
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trackManager = new TrackManager(new OnlineStore());
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this.audio = audio;
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audio.AddItem(trackManager);
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config.BindWith(FrameworkSetting.VolumeMusic, trackManager.Volume);
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}
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/// <summary>
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/// Retrieves a <see cref="PreviewTrack"/> for a <see cref="BeatmapSetInfo"/>.
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/// </summary>
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/// <param name="beatmapSetInfo">The <see cref="BeatmapSetInfo"/> to retrieve the preview track for.</param>
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/// <returns>The playable <see cref="PreviewTrack"/>.</returns>
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public PreviewTrack Get(BeatmapSetInfo beatmapSetInfo)
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{
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var track = CreatePreviewTrack(beatmapSetInfo, trackManager);
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track.Started += () =>
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{
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current?.Stop();
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current = track;
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audio.Track.AddAdjustment(AdjustableProperty.Volume, muteBindable);
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};
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track.Stopped += () =>
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{
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current = null;
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audio.Track.RemoveAdjustment(AdjustableProperty.Volume, muteBindable);
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};
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return track;
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}
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/// <summary>
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/// Stops any currently playing <see cref="PreviewTrack"/>.
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/// </summary>
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/// <remarks>
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/// Only the immediate owner (an object that implements <see cref="IPreviewTrackOwner"/>) of the playing <see cref="PreviewTrack"/>
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/// can globally stop the currently playing <see cref="PreviewTrack"/>. The object holding a reference to the <see cref="PreviewTrack"/>
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/// can always stop the <see cref="PreviewTrack"/> themselves through <see cref="PreviewTrack.Stop()"/>.
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/// </remarks>
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/// <param name="source">The <see cref="IPreviewTrackOwner"/> which may be the owner of the <see cref="PreviewTrack"/>.</param>
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public void StopAnyPlaying(IPreviewTrackOwner source)
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{
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if (current == null || current.Owner != source)
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return;
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current.Stop();
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current = null;
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}
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/// <summary>
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/// Creates the <see cref="TrackManagerPreviewTrack"/>.
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/// </summary>
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protected virtual TrackManagerPreviewTrack CreatePreviewTrack(BeatmapSetInfo beatmapSetInfo, TrackManager trackManager) => new TrackManagerPreviewTrack(beatmapSetInfo, trackManager);
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protected class TrackManagerPreviewTrack : PreviewTrack
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{
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public IPreviewTrackOwner Owner { get; private set; }
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private readonly BeatmapSetInfo beatmapSetInfo;
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private readonly TrackManager trackManager;
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public TrackManagerPreviewTrack(BeatmapSetInfo beatmapSetInfo, TrackManager trackManager)
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{
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this.beatmapSetInfo = beatmapSetInfo;
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this.trackManager = trackManager;
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}
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[BackgroundDependencyLoader]
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private void load(IPreviewTrackOwner owner)
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{
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Owner = owner;
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}
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protected override Track GetTrack() => trackManager.Get($"https://b.ppy.sh/preview/{beatmapSetInfo?.OnlineBeatmapSetID}.mp3");
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}
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}
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}
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