mirror of
https://github.com/jellyfin/jellyfin.git
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118 lines
4.1 KiB
C#
118 lines
4.1 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Dynamic;
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using System.Globalization;
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using System.Linq;
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using LrcParser.Model;
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using LrcParser.Parser;
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using MediaBrowser.Controller.Entities;
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namespace Jellyfin.Api.Models.UserDtos
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{
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/// <summary>
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/// LRC File Lyric Provider.
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/// </summary>
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public class LrcLyricsProvider : ILyricsProvider
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="LrcLyricsProvider"/> class.
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/// </summary>
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public LrcLyricsProvider()
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{
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FileExtensions = new Collection<string>
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{
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"lrc"
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};
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}
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/// <summary>
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/// Gets a value indicating the File Extenstions this provider works with.
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/// </summary>
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public Collection<string>? FileExtensions { get; }
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/// <summary>
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/// Gets or Sets a value indicating whether Process() generated data.
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/// </summary>
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/// <returns><c>true</c> if data generated; otherwise, <c>false</c>.</returns>
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public bool HasData { get; set; }
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/// <summary>
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/// Gets or Sets Data object generated by Process() method.
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/// </summary>
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/// <returns><c>Object</c> with data if no error occured; otherwise, <c>null</c>.</returns>
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public object? Data { get; set; }
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/// <summary>
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/// Opens lyric file for [the specified item], and processes it for API return.
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/// </summary>
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/// <param name="item">The item to to process.</param>
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public void Process(BaseItem item)
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{
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string? lyricFilePath = Helpers.ItemHelper.GetLyricFilePath(item.Path);
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if (string.IsNullOrEmpty(lyricFilePath))
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{
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return;
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}
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List<Lyric> lyricsList = new List<Lyric>();
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List<LrcParser.Model.Lyric> sortedLyricData = new List<LrcParser.Model.Lyric>();
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var metaData = new ExpandoObject() as IDictionary<string, object>;
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string lrcFileContent = System.IO.File.ReadAllText(lyricFilePath);
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try
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{
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// Parse and sort lyric rows
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LyricParser lrcLyricParser = new LrcParser.Parser.Lrc.LrcParser();
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Song lyricData = lrcLyricParser.Decode(lrcFileContent);
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sortedLyricData = lyricData.Lyrics.Where(x => x.TimeTags.Count > 0).OrderBy(x => x.TimeTags.ToArray()[0].Value).ToList();
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// Parse metadata rows
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var metaDataRows = lyricData.Lyrics
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.Where(x => x.TimeTags.Count == 0)
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.Where(x => x.Text.StartsWith("[", StringComparison.Ordinal) && x.Text.EndsWith("]", StringComparison.Ordinal))
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.Select(x => x.Text)
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.ToList();
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foreach (string metaDataRow in metaDataRows)
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{
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var metaDataField = metaDataRow.Split(":");
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string metaDataFieldName = metaDataField[0].Replace("[", string.Empty, StringComparison.Ordinal);
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string metaDataFieldValue = metaDataField[1].Replace("]", string.Empty, StringComparison.Ordinal);
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metaData.Add(metaDataFieldName, metaDataFieldValue);
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}
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}
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catch
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{
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return;
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}
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if (!sortedLyricData.Any())
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{
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return;
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}
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for (int i = 0; i < sortedLyricData.Count; i++)
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{
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var timeData = sortedLyricData[i].TimeTags.ToArray()[0].Value;
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double ticks = Convert.ToDouble(timeData, new NumberFormatInfo()) * 10000;
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lyricsList.Add(new Lyric { Start = Math.Ceiling(ticks), Text = sortedLyricData[i].Text });
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}
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this.HasData = true;
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if (metaData.Any())
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{
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this.Data = new { MetaData = metaData, lyrics = lyricsList };
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}
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else
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{
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this.Data = new { lyrics = lyricsList };
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}
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}
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}
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}
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