86 lines
2.9 KiB
C#
86 lines
2.9 KiB
C#
using Dinah.Core;
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using Dinah.Core.Diagnostics;
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using Newtonsoft.Json.Linq;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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namespace AaxDecrypter
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{
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public class ChapterInfo
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{
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private List<Chapter> _chapterList = new List<Chapter>();
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public IEnumerable<Chapter> Chapters => _chapterList.AsEnumerable();
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public int Count => _chapterList.Count;
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public ChapterInfo() { }
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public ChapterInfo(string audiobookFile)
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{
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var info = new ProcessStartInfo
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{
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FileName = DecryptSupportLibraries.ffprobePath,
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Arguments = "-loglevel panic -show_chapters -print_format json \"" + audiobookFile + "\""
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};
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var jString = info.RunHidden().Output;
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var chapterJObject = JObject.Parse(jString);
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var chapters = chapterJObject["chapters"]
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.Select(c => new Chapter(
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c["tags"]?["title"]?.Value<string>(),
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c["start_time"].Value<double>(),
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c["end_time"].Value<double>()
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));
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_chapterList.AddRange(chapters);
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}
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public void AddChapter(Chapter chapter)
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{
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ArgumentValidator.EnsureNotNull(chapter, nameof(chapter));
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_chapterList.Add(chapter);
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}
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public string ToFFMeta(bool includeFFMetaHeader)
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{
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var ffmetaChapters = new StringBuilder();
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if (includeFFMetaHeader)
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ffmetaChapters.AppendLine(";FFMETADATA1\n");
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foreach (var c in Chapters)
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{
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ffmetaChapters.AppendLine(c.ToFFMeta());
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}
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return ffmetaChapters.ToString();
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}
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}
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public class Chapter
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{
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public string Title { get; }
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public TimeSpan StartOffset { get; }
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public TimeSpan EndOffset { get; }
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public Chapter(string title, long startOffsetMs, long lengthMs)
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{
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ArgumentValidator.EnsureNotNullOrEmpty(title, nameof(title));
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ArgumentValidator.EnsureGreaterThan(startOffsetMs, nameof(startOffsetMs), -1);
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ArgumentValidator.EnsureGreaterThan(lengthMs, nameof(lengthMs), 0);
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Title = title;
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StartOffset = TimeSpan.FromMilliseconds(startOffsetMs);
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EndOffset = StartOffset + TimeSpan.FromMilliseconds(lengthMs);
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}
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public Chapter(string title, double startTimeSec, double endTimeSec)
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:this(title, (long)(startTimeSec * 1000), (long)((endTimeSec - startTimeSec) * 1000))
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{
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}
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public string ToFFMeta()
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{
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return "[CHAPTER]\n" +
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"TIMEBASE=1/1000\n" +
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"START=" + StartOffset.TotalMilliseconds + "\n" +
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"END=" + EndOffset.TotalMilliseconds + "\n" +
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"title=" + Title;
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}
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}
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}
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