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osu-lazer/osu.Game/Rulesets/Edit/Checks/CheckTooShortAudioFiles.cs
2022-01-12 22:39:00 +09:00

90 lines
3.7 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.Collections.Generic;
using System.IO;
using System.Linq;
using ManagedBass;
using osu.Framework.Audio.Callbacks;
using osu.Game.Extensions;
using osu.Game.Rulesets.Edit.Checks.Components;
namespace osu.Game.Rulesets.Edit.Checks
{
public class CheckTooShortAudioFiles : ICheck
{
private const int ms_threshold = 25;
private const int min_bytes_threshold = 100;
private readonly string[] audioExtensions = { "mp3", "ogg", "wav" };
public CheckMetadata Metadata => new CheckMetadata(CheckCategory.Audio, "Too short audio files");
public IEnumerable<IssueTemplate> PossibleTemplates => new IssueTemplate[]
{
new IssueTemplateTooShort(this),
new IssueTemplateBadFormat(this)
};
public IEnumerable<Issue> Run(BeatmapVerifierContext context)
{
var beatmapSet = context.Beatmap.BeatmapInfo.BeatmapSet;
if (beatmapSet != null)
{
foreach (var file in beatmapSet.Files)
{
using (Stream data = context.WorkingBeatmap.GetStream(file.File.GetStoragePath()))
{
if (data == null)
continue;
var fileCallbacks = new FileCallbacks(new DataStreamFileProcedures(data));
int decodeStream = Bass.CreateStream(StreamSystem.NoBuffer, BassFlags.Decode | BassFlags.Prescan, fileCallbacks.Callbacks, fileCallbacks.Handle);
if (decodeStream == 0)
{
// If the file is not likely to be properly parsed by Bass, we don't produce Error issues about it.
// Image files and audio files devoid of audio data both fail, for example, but neither would be issues in this check.
if (hasAudioExtension(file.Filename) && probablyHasAudioData(data))
yield return new IssueTemplateBadFormat(this).Create(file.Filename);
continue;
}
long length = Bass.ChannelGetLength(decodeStream);
double ms = Bass.ChannelBytes2Seconds(decodeStream, length) * 1000;
// Extremely short audio files do not play on some soundcards, resulting in nothing being heard in-game for some users.
if (ms > 0 && ms < ms_threshold)
yield return new IssueTemplateTooShort(this).Create(file.Filename, ms);
}
}
}
}
private bool hasAudioExtension(string filename) => audioExtensions.Any(filename.ToLower().EndsWith);
private bool probablyHasAudioData(Stream data) => data.Length > min_bytes_threshold;
public class IssueTemplateTooShort : IssueTemplate
{
public IssueTemplateTooShort(ICheck check)
: base(check, IssueType.Problem, "\"{0}\" is too short ({1:0} ms), should be at least {2:0} ms.")
{
}
public Issue Create(string filename, double ms) => new Issue(this, filename, ms, ms_threshold);
}
public class IssueTemplateBadFormat : IssueTemplate
{
public IssueTemplateBadFormat(ICheck check)
: base(check, IssueType.Error, "Could not check whether \"{0}\" is too short (code \"{1}\").")
{
}
public Issue Create(string filename) => new Issue(this, filename, Bass.LastError);
}
}
}