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osu-lazer/osu.Game/Beatmaps/BeatmapManager_WorkingBeatmap.cs
2019-12-17 13:00:15 +08:00

170 lines
5.5 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using System.Linq;
using osu.Framework.Audio;
using osu.Framework.Audio.Track;
using osu.Framework.Graphics.Textures;
using osu.Framework.Graphics.Video;
using osu.Framework.IO.Stores;
using osu.Framework.Logging;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.Skinning;
using osu.Game.Storyboards;
namespace osu.Game.Beatmaps
{
public partial class BeatmapManager
{
protected class BeatmapManagerWorkingBeatmap : WorkingBeatmap
{
private readonly IResourceStore<byte[]> store;
public BeatmapManagerWorkingBeatmap(IResourceStore<byte[]> store, TextureStore textureStore, BeatmapInfo beatmapInfo, AudioManager audioManager)
: base(beatmapInfo, audioManager)
{
this.store = store;
this.textureStore = textureStore;
}
protected override IBeatmap GetBeatmap()
{
try
{
using (var stream = new LineBufferedReader(store.GetStream(getPathForFile(BeatmapInfo.Path))))
return Decoder.GetDecoder<Beatmap>(stream).Decode(stream);
}
catch
{
return null;
}
}
private string getPathForFile(string filename) => BeatmapSetInfo.Files.FirstOrDefault(f => string.Equals(f.Filename, filename, StringComparison.OrdinalIgnoreCase))?.FileInfo.StoragePath;
private TextureStore textureStore;
private ITrackStore trackStore;
protected override bool BackgroundStillValid(Texture b) => false; // bypass lazy logic. we want to return a new background each time for refcounting purposes.
protected override Texture GetBackground()
{
if (Metadata?.BackgroundFile == null)
return null;
try
{
return textureStore.Get(getPathForFile(Metadata.BackgroundFile));
}
catch
{
return null;
}
}
protected override VideoSprite GetVideo()
{
if (Metadata?.VideoFile == null)
return null;
try
{
return new VideoSprite(textureStore.GetStream(getPathForFile(Metadata.VideoFile)));
}
catch
{
return null;
}
}
protected override Track GetTrack()
{
try
{
return (trackStore ??= AudioManager.GetTrackStore(store)).Get(getPathForFile(Metadata.AudioFile));
}
catch
{
return null;
}
}
public override void RecycleTrack()
{
base.RecycleTrack();
trackStore?.Dispose();
trackStore = null;
}
public override void TransferTo(WorkingBeatmap other)
{
base.TransferTo(other);
if (other is BeatmapManagerWorkingBeatmap owb && textureStore != null && BeatmapInfo.BackgroundEquals(other.BeatmapInfo))
owb.textureStore = textureStore;
}
protected override Waveform GetWaveform()
{
try
{
var trackData = store.GetStream(getPathForFile(Metadata.AudioFile));
return trackData == null ? null : new Waveform(trackData);
}
catch
{
return null;
}
}
protected override Storyboard GetStoryboard()
{
Storyboard storyboard;
try
{
using (var stream = new LineBufferedReader(store.GetStream(getPathForFile(BeatmapInfo.Path))))
{
var decoder = Decoder.GetDecoder<Storyboard>(stream);
// todo: support loading from both set-wide storyboard *and* beatmap specific.
if (BeatmapSetInfo?.StoryboardFile == null)
storyboard = decoder.Decode(stream);
else
{
using (var secondaryStream = new LineBufferedReader(store.GetStream(getPathForFile(BeatmapSetInfo.StoryboardFile))))
storyboard = decoder.Decode(stream, secondaryStream);
}
}
}
catch (Exception e)
{
Logger.Error(e, "Storyboard failed to load");
storyboard = new Storyboard();
}
storyboard.BeatmapInfo = BeatmapInfo;
return storyboard;
}
protected override ISkin GetSkin()
{
try
{
return new LegacyBeatmapSkin(BeatmapInfo, store, AudioManager);
}
catch (Exception e)
{
Logger.Error(e, "Skin failed to load");
return null;
}
}
}
}
}