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75 lines
2.9 KiB
C#
75 lines
2.9 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 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 CheckAudioQuality : ICheck
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{
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// This is a requirement as stated in the Ranking Criteria.
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// See https://osu.ppy.sh/wiki/en/Ranking_Criteria#rules.4
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private const int max_bitrate = 192;
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// "A song's audio file /.../ must be of reasonable quality. Try to find the highest quality source file available"
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// There not existing a version with a bitrate of 128 kbps or higher is extremely rare.
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private const int min_bitrate = 128;
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public CheckMetadata Metadata { get; } = new CheckMetadata(CheckCategory.Audio, "Too high or low audio bitrate");
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public IEnumerable<IssueTemplate> PossibleTemplates => new IssueTemplate[]
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{
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new IssueTemplateTooHighBitrate(this),
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new IssueTemplateTooLowBitrate(this),
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new IssueTemplateNoBitrate(this)
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};
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public IEnumerable<Issue> Run(BeatmapVerifierContext context)
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{
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string audioFile = context.Beatmap.Metadata.AudioFile;
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if (string.IsNullOrEmpty(audioFile))
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yield break;
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var track = context.WorkingBeatmap.Track;
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if (track?.Bitrate == null || track.Bitrate.Value == 0)
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yield return new IssueTemplateNoBitrate(this).Create();
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else if (track.Bitrate.Value > max_bitrate)
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yield return new IssueTemplateTooHighBitrate(this).Create(track.Bitrate.Value);
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else if (track.Bitrate.Value < min_bitrate)
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yield return new IssueTemplateTooLowBitrate(this).Create(track.Bitrate.Value);
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}
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public class IssueTemplateTooHighBitrate : IssueTemplate
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{
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public IssueTemplateTooHighBitrate(ICheck check)
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: base(check, IssueType.Problem, "The audio bitrate ({0} kbps) exceeds {1} kbps.")
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{
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}
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public Issue Create(int bitrate) => new Issue(this, bitrate, max_bitrate);
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}
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public class IssueTemplateTooLowBitrate : IssueTemplate
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{
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public IssueTemplateTooLowBitrate(ICheck check)
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: base(check, IssueType.Problem, "The audio bitrate ({0} kbps) is lower than {1} kbps.")
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{
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}
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public Issue Create(int bitrate) => new Issue(this, bitrate, min_bitrate);
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}
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public class IssueTemplateNoBitrate : IssueTemplate
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{
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public IssueTemplateNoBitrate(ICheck check)
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: base(check, IssueType.Error, "The audio bitrate could not be retrieved.")
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{
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}
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public Issue Create() => new Issue(this);
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}
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}
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}
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