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Implement initial legacy beatmap encoding support

This commit is contained in:
smoogipoo 2019-12-10 20:44:45 +09:00
parent c378e525da
commit be000e13e4
2 changed files with 517 additions and 0 deletions

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// 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.IO;
using System.Linq;
using NUnit.Framework;
using osu.Game.Audio;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.Rulesets.Objects.Types;
using osu.Game.Tests.Resources;
using osuTK;
namespace osu.Game.Tests.Beatmaps.Formats
{
[TestFixture]
public class LegacyBeatmapEncoderTest
{
private const string normal = "Soleily - Renatus (Gamu) [Insane].osu";
[Test]
public void TestDecodeMetadata()
{
var beatmap = decode(normal);
var meta = beatmap.BeatmapInfo.Metadata;
Assert.AreEqual(241526, beatmap.BeatmapInfo.BeatmapSet.OnlineBeatmapSetID);
Assert.AreEqual("Soleily", meta.Artist);
Assert.AreEqual("Soleily", meta.ArtistUnicode);
Assert.AreEqual("03. Renatus - Soleily 192kbps.mp3", meta.AudioFile);
Assert.AreEqual("Gamu", meta.AuthorString);
Assert.AreEqual("machinetop_background.jpg", meta.BackgroundFile);
Assert.AreEqual(164471, meta.PreviewTime);
Assert.AreEqual(string.Empty, meta.Source);
Assert.AreEqual("MBC7 Unisphere 地球ヤバイEP Chikyu Yabai", meta.Tags);
Assert.AreEqual("Renatus", meta.Title);
Assert.AreEqual("Renatus", meta.TitleUnicode);
}
[Test]
public void TestDecodeGeneral()
{
var beatmap = decode(normal);
var beatmapInfo = beatmap.BeatmapInfo;
Assert.AreEqual(0, beatmapInfo.AudioLeadIn);
Assert.AreEqual(false, beatmapInfo.Countdown);
Assert.AreEqual(0.7f, beatmapInfo.StackLeniency);
Assert.AreEqual(false, beatmapInfo.SpecialStyle);
Assert.IsTrue(beatmapInfo.RulesetID == 0);
Assert.AreEqual(false, beatmapInfo.LetterboxInBreaks);
Assert.AreEqual(false, beatmapInfo.WidescreenStoryboard);
}
[Test]
public void TestDecodeEditor()
{
var beatmap = decode(normal);
var beatmapInfo = beatmap.BeatmapInfo;
int[] expectedBookmarks =
{
11505, 22054, 32604, 43153, 53703, 64252, 74802, 85351,
95901, 106450, 116999, 119637, 130186, 140735, 151285,
161834, 164471, 175020, 185570, 196119, 206669, 209306
};
Assert.AreEqual(expectedBookmarks.Length, beatmapInfo.Bookmarks.Length);
for (int i = 0; i < expectedBookmarks.Length; i++)
Assert.AreEqual(expectedBookmarks[i], beatmapInfo.Bookmarks[i]);
Assert.AreEqual(1.8, beatmapInfo.DistanceSpacing);
Assert.AreEqual(4, beatmapInfo.BeatDivisor);
Assert.AreEqual(4, beatmapInfo.GridSize);
Assert.AreEqual(2, beatmapInfo.TimelineZoom);
}
[Test]
public void TestDecodeDifficulty()
{
var beatmap = decode(normal);
var difficulty = beatmap.BeatmapInfo.BaseDifficulty;
Assert.AreEqual(6.5f, difficulty.DrainRate);
Assert.AreEqual(4, difficulty.CircleSize);
Assert.AreEqual(8, difficulty.OverallDifficulty);
Assert.AreEqual(9, difficulty.ApproachRate);
Assert.AreEqual(1.8, difficulty.SliderMultiplier);
Assert.AreEqual(2, difficulty.SliderTickRate);
}
[Test]
public void TestDecodeHitObjects()
{
var beatmap = decode(normal);
var curveData = beatmap.HitObjects[0] as IHasCurve;
var positionData = beatmap.HitObjects[0] as IHasPosition;
Assert.IsNotNull(positionData);
Assert.IsNotNull(curveData);
Assert.AreEqual(new Vector2(192, 168), positionData.Position);
Assert.AreEqual(956, beatmap.HitObjects[0].StartTime);
Assert.IsTrue(beatmap.HitObjects[0].Samples.Any(s => s.Name == HitSampleInfo.HIT_NORMAL));
positionData = beatmap.HitObjects[1] as IHasPosition;
Assert.IsNotNull(positionData);
Assert.AreEqual(new Vector2(304, 56), positionData.Position);
Assert.AreEqual(1285, beatmap.HitObjects[1].StartTime);
Assert.IsTrue(beatmap.HitObjects[1].Samples.Any(s => s.Name == HitSampleInfo.HIT_CLAP));
}
private Beatmap decode(string filename)
{
decode(filename, out Beatmap jsonDecoded);
return jsonDecoded;
}
private Beatmap decode(string filename, out Beatmap decoded)
{
using (var stream = TestResources.OpenResource(filename))
using (var sr = new LineBufferedReader(stream))
{
var legacyDecoded = new LegacyBeatmapDecoder { ApplyOffsets = false }.Decode(sr);
using (var ms = new MemoryStream())
using (var sw = new StreamWriter(ms))
using (var sr2 = new LineBufferedReader(ms))
{
new LegacyBeatmapEncoder(legacyDecoded).Encode(sw);
sw.Flush();
ms.Position = 0;
string result = sr2.ReadToEnd();
ms.Position = 0;
decoded = new LegacyBeatmapDecoder { ApplyOffsets = false }.Decode(sr2);
return legacyDecoded;
}
}
}
}
}

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// 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.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using osu.Game.Audio;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.Beatmaps.Legacy;
using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.Objects.Types;
namespace osu.Game.Beatmaps.Formats
{
public class LegacyBeatmapEncoder
{
public const int LATEST_VERSION = 14234;
private readonly IBeatmap beatmap;
public LegacyBeatmapEncoder(IBeatmap beatmap)
{
this.beatmap = beatmap;
if (beatmap.BeatmapInfo.RulesetID < 0 || beatmap.BeatmapInfo.RulesetID > 3)
throw new ArgumentException("Only beatmaps in the osu, taiko, catch, or mania rulesets can be encoded to the legacy beatmap format.", nameof(beatmap));
}
public void Encode(TextWriter writer)
{
writer.WriteLine($"osu file format v{LATEST_VERSION}");
writer.WriteLine();
handleGeneral(writer);
writer.WriteLine();
handleEditor(writer);
writer.WriteLine();
handleMetadata(writer);
writer.WriteLine();
handleDifficulty(writer);
writer.WriteLine();
handleEvents(writer);
writer.WriteLine();
handleTimingPoints(writer);
writer.WriteLine();
handleHitObjects(writer);
}
private void handleGeneral(TextWriter writer)
{
writer.WriteLine("[General]");
writer.WriteLine(FormattableString.Invariant($"AudioFilename: {Path.GetFileName(beatmap.Metadata.AudioFile)}"));
writer.WriteLine(FormattableString.Invariant($"AudioLeadIn: {beatmap.BeatmapInfo.AudioLeadIn}"));
writer.WriteLine(FormattableString.Invariant($"PreviewTime: {beatmap.Metadata.PreviewTime}"));
// Todo: Not all countdown types are supported by lazer yet
writer.WriteLine(FormattableString.Invariant($"Countdown: {(beatmap.BeatmapInfo.Countdown ? "1" : "0")}"));
writer.WriteLine(FormattableString.Invariant($"SampleSet: {(int)toLegacySampleBank(beatmap.ControlPointInfo.SamplePoints[0].SampleBank)}"));
writer.WriteLine(FormattableString.Invariant($"StackLeniency: {beatmap.BeatmapInfo.StackLeniency}"));
writer.WriteLine(FormattableString.Invariant($"Mode: {beatmap.BeatmapInfo.RulesetID}"));
writer.WriteLine(FormattableString.Invariant($"LetterboxInBreaks: {(beatmap.BeatmapInfo.LetterboxInBreaks ? "1" : "0")}"));
// if (beatmap.BeatmapInfo.UseSkinSprites)
// writer.WriteLine(@"UseSkinSprites: 1");
// if (b.AlwaysShowPlayfield)
// writer.WriteLine(@"AlwaysShowPlayfield: 1");
// if (b.OverlayPosition != OverlayPosition.NoChange)
// writer.WriteLine(@"OverlayPosition: " + b.OverlayPosition);
// if (!string.IsNullOrEmpty(b.SkinPreference))
// writer.WriteLine(@"SkinPreference:" + b.SkinPreference);
// if (b.EpilepsyWarning)
// writer.WriteLine(@"EpilepsyWarning: 1");
// if (b.CountdownOffset > 0)
// writer.WriteLine(@"CountdownOffset: " + b.CountdownOffset.ToString());
if (beatmap.BeatmapInfo.RulesetID == 3)
writer.WriteLine(FormattableString.Invariant($"SpecialStyle: {(beatmap.BeatmapInfo.SpecialStyle ? "1" : "0")}"));
writer.WriteLine(FormattableString.Invariant($"WidescreenStoryboard: {(beatmap.BeatmapInfo.WidescreenStoryboard ? "1" : "0")}"));
// if (b.SamplesMatchPlaybackRate)
// writer.WriteLine(@"SamplesMatchPlaybackRate: 1");
}
private void handleEditor(TextWriter writer)
{
writer.WriteLine("[Editor]");
if (beatmap.BeatmapInfo.Bookmarks.Length > 0)
writer.WriteLine(FormattableString.Invariant($"Bookmarks: {string.Join(',', beatmap.BeatmapInfo.Bookmarks)}"));
writer.WriteLine(FormattableString.Invariant($"DistanceSpacing: {beatmap.BeatmapInfo.DistanceSpacing}"));
writer.WriteLine(FormattableString.Invariant($"BeatDivisor: {beatmap.BeatmapInfo.BeatDivisor}"));
writer.WriteLine(FormattableString.Invariant($"GridSize: {beatmap.BeatmapInfo.GridSize}"));
writer.WriteLine(FormattableString.Invariant($"TimelineZoom: {beatmap.BeatmapInfo.TimelineZoom}"));
}
private void handleMetadata(TextWriter writer)
{
writer.WriteLine("[Metadata]");
writer.WriteLine(FormattableString.Invariant($"Title: {beatmap.Metadata.Title}"));
writer.WriteLine(FormattableString.Invariant($"TitleUnicode: {beatmap.Metadata.TitleUnicode}"));
writer.WriteLine(FormattableString.Invariant($"Artist: {beatmap.Metadata.Artist}"));
writer.WriteLine(FormattableString.Invariant($"ArtistUnicode: {beatmap.Metadata.ArtistUnicode}"));
writer.WriteLine(FormattableString.Invariant($"Creator: {beatmap.Metadata.AuthorString}"));
writer.WriteLine(FormattableString.Invariant($"Version: {beatmap.Metadata.Artist}"));
writer.WriteLine(FormattableString.Invariant($"Source: {beatmap.Metadata.Source}"));
writer.WriteLine(FormattableString.Invariant($"Tags: {beatmap.Metadata.Tags}"));
writer.WriteLine(FormattableString.Invariant($"BeatmapID: {beatmap.BeatmapInfo.OnlineBeatmapID ?? 0}"));
writer.WriteLine(FormattableString.Invariant($"BeatmapSetID: {beatmap.BeatmapInfo.BeatmapSet.OnlineBeatmapSetID ?? 0}"));
}
private void handleDifficulty(TextWriter writer)
{
writer.WriteLine("[Difficulty]");
writer.WriteLine(FormattableString.Invariant($"HPDrainRate: {beatmap.BeatmapInfo.BaseDifficulty.DrainRate}"));
writer.WriteLine(FormattableString.Invariant($"CircleSize: {beatmap.BeatmapInfo.BaseDifficulty.CircleSize}"));
writer.WriteLine(FormattableString.Invariant($"OverallDifficulty: {beatmap.BeatmapInfo.BaseDifficulty.OverallDifficulty}"));
writer.WriteLine(FormattableString.Invariant($"ApproachRate: {beatmap.BeatmapInfo.BaseDifficulty.ApproachRate}"));
writer.WriteLine(FormattableString.Invariant($"SliderMultiplier: {beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier}"));
writer.WriteLine(FormattableString.Invariant($"SliderTickRate: {beatmap.BeatmapInfo.BaseDifficulty.SliderTickRate}"));
}
private void handleEvents(TextWriter writer)
{
// Todo: Storyboard events
}
private void handleTimingPoints(TextWriter writer)
{
if (beatmap.ControlPointInfo.Groups.Count == 0)
return;
writer.WriteLine("[TimingPoints]");
foreach (var group in beatmap.ControlPointInfo.Groups)
{
var timingPoint = group.ControlPoints.OfType<TimingControlPoint>().FirstOrDefault();
var difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(group.Time);
var samplePoint = beatmap.ControlPointInfo.SamplePointAt(group.Time);
var effectPoint = beatmap.ControlPointInfo.EffectPointAt(group.Time);
// Convert beat length the legacy format
double beatLength;
if (timingPoint != null)
beatLength = timingPoint.BeatLength;
else
beatLength = -100 / difficultyPoint.SpeedMultiplier;
// Apply the control point to a hit sample to uncover legacy properties (e.g. suffix)
HitSampleInfo tempHitSample = samplePoint.ApplyTo(new HitSampleInfo());
// Convert effect flags to the legacy format
LegacyEffectFlags effectFlags = LegacyEffectFlags.None;
if (effectPoint.KiaiMode)
effectFlags |= LegacyEffectFlags.Kiai;
if (effectPoint.OmitFirstBarLine)
effectFlags |= LegacyEffectFlags.OmitFirstBarLine;
writer.Write(FormattableString.Invariant($"{group.Time},"));
writer.Write(FormattableString.Invariant($"{beatLength},"));
writer.Write(FormattableString.Invariant($"{(int)beatmap.ControlPointInfo.TimingPointAt(group.Time).TimeSignature},"));
writer.Write(FormattableString.Invariant($"{(int)toLegacySampleBank(tempHitSample.Bank)},"));
writer.Write(FormattableString.Invariant($"{toLegacyCustomSampleBank(tempHitSample.Suffix)},"));
writer.Write(FormattableString.Invariant($"{tempHitSample.Volume},"));
writer.Write(FormattableString.Invariant($"{(timingPoint != null ? "1" : "0")},"));
writer.Write(FormattableString.Invariant($"{(int)effectFlags}"));
writer.Write("\n");
}
}
private void handleHitObjects(TextWriter writer)
{
if (beatmap.HitObjects.Count == 0)
return;
writer.WriteLine("[HitObjects]");
foreach (var h in beatmap.HitObjects)
{
switch (beatmap.BeatmapInfo.RulesetID)
{
case 0:
handleOsuHitObject(writer, h);
break;
case 1:
handleTaikoHitObject(writer, h);
break;
case 2:
handleCatchHitObject(writer, h);
break;
case 3:
handleManiaHitObject(writer, h);
break;
}
}
}
private void handleOsuHitObject(TextWriter writer, HitObject hitObject)
{
var positionData = hitObject as IHasPosition;
var comboData = hitObject as IHasCombo;
Debug.Assert(positionData != null);
Debug.Assert(comboData != null);
LegacyHitObjectType hitObjectType = (LegacyHitObjectType)(comboData.ComboOffset << 4);
if (comboData.NewCombo)
hitObjectType |= LegacyHitObjectType.NewCombo;
if (hitObject is IHasCurve _)
hitObjectType |= LegacyHitObjectType.Slider;
else if (hitObject is IHasEndTime _)
hitObjectType |= LegacyHitObjectType.Spinner;
else
hitObjectType |= LegacyHitObjectType.Circle;
LegacyHitSoundType soundType = LegacyHitSoundType.Normal;
HitSampleInfo firstAdditionSound = hitObject.Samples.FirstOrDefault(s => s.Name != HitSampleInfo.HIT_NORMAL);
if (firstAdditionSound != null)
soundType |= toLegacyHitSound(firstAdditionSound.Name);
writer.Write(FormattableString.Invariant($"{positionData.X},"));
writer.Write(FormattableString.Invariant($"{positionData.Y},"));
writer.Write(FormattableString.Invariant($"{hitObject.StartTime},"));
writer.Write(FormattableString.Invariant($"{(int)hitObjectType},"));
writer.Write(FormattableString.Invariant($"{(int)soundType},"));
if (hitObject is IHasCurve curveData)
{
for (int i = 0; i < curveData.Path.ControlPoints.Count; i++)
{
PathControlPoint point = curveData.Path.ControlPoints[i];
switch (point.Type.Value)
{
case PathType.Bezier:
writer.Write("B|");
break;
case PathType.Catmull:
writer.Write("C|");
break;
case PathType.PerfectCurve:
writer.Write("P|");
break;
case PathType.Linear:
writer.Write("L|");
break;
}
writer.Write(FormattableString.Invariant($"{point.Position.Value.X}:{point.Position.Value.Y}"));
writer.Write(i != curveData.Path.ControlPoints.Count - 1 ? "|" : ",");
}
writer.Write(FormattableString.Invariant($"{curveData.RepeatCount - 1},"));
writer.Write(FormattableString.Invariant($"{curveData.Path.Distance},"));
for (int i = 0; i < curveData.NodeSamples.Count; i++)
{
LegacyHitSoundType type = LegacyHitSoundType.None;
foreach (var sample in curveData.NodeSamples[i])
type |= toLegacyHitSound(sample.Name);
writer.Write(FormattableString.Invariant($"{(int)type}"));
writer.Write(i != curveData.NodeSamples.Count - 1 ? "|" : ",");
}
for (int i = 0; i < curveData.NodeSamples.Count; i++)
{
writer.Write(getSampleBank(curveData.NodeSamples[i], true));
writer.Write(i != curveData.NodeSamples.Count - 1 ? "|" : ",");
}
}
else if (hitObject is IHasEndTime endTimeData)
writer.Write(FormattableString.Invariant($"{endTimeData.EndTime},"));
writer.Write(getSampleBank(hitObject.Samples));
writer.Write(Environment.NewLine);
}
private void handleTaikoHitObject(TextWriter writer, HitObject hitObject)
{
}
private void handleCatchHitObject(TextWriter writer, HitObject hitObject)
{
}
private void handleManiaHitObject(TextWriter writer, HitObject hitObject)
{
}
private string getSampleBank(IList<HitSampleInfo> samples, bool banksOnly = false)
{
LegacySampleBank normalBank = toLegacySampleBank(samples.FirstOrDefault(s => s.Name == HitSampleInfo.HIT_NORMAL)?.Bank);
LegacySampleBank addBank = toLegacySampleBank(samples.FirstOrDefault(s => !string.IsNullOrEmpty(s.Name) && s.Name != HitSampleInfo.HIT_NORMAL)?.Bank);
if (addBank == LegacySampleBank.None)
addBank = normalBank;
string customSampleBank = toLegacyCustomSampleBank(samples.FirstOrDefault()?.Suffix);
string sampleFilename = samples.FirstOrDefault(s => string.IsNullOrEmpty(s.Name))?.LookupNames.First() ?? string.Empty;
int volume = samples.First().Volume;
StringBuilder sb = new StringBuilder();
sb.Append(FormattableString.Invariant($"{(int)normalBank}:"));
sb.Append(FormattableString.Invariant($"{(int)addBank}:"));
if (!banksOnly)
{
sb.Append(FormattableString.Invariant($"{customSampleBank}:"));
sb.Append(FormattableString.Invariant($"{volume}:"));
sb.Append(FormattableString.Invariant($"{sampleFilename}"));
}
return sb.ToString();
}
private LegacyHitSoundType toLegacyHitSound(string hitSoundName)
{
switch (hitSoundName)
{
case HitSampleInfo.HIT_NORMAL:
return LegacyHitSoundType.Normal;
case HitSampleInfo.HIT_WHISTLE:
return LegacyHitSoundType.Whistle;
case HitSampleInfo.HIT_FINISH:
return LegacyHitSoundType.Finish;
case HitSampleInfo.HIT_CLAP:
return LegacyHitSoundType.Clap;
default:
return LegacyHitSoundType.None;
}
}
private LegacySampleBank toLegacySampleBank(string sampleBank)
{
switch (sampleBank?.ToLower())
{
case "normal":
return LegacySampleBank.Normal;
case "soft":
return LegacySampleBank.Soft;
case "drum":
return LegacySampleBank.Drum;
default:
return LegacySampleBank.None;
}
}
private string toLegacyCustomSampleBank(string sampleSuffix) => string.IsNullOrEmpty(sampleSuffix) ? "0" : sampleSuffix;
}
}