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