mirror of
https://github.com/rmcrackan/Libation.git
synced 2026-02-18 00:17:43 +01:00
3ab1edc076
Make fields readonly Remove unnecessary casts Format document Remove unnecessary usings Sort usings Use file-level namespaces Order modifiers
91 lines
3.9 KiB
C#
91 lines
3.9 KiB
C#
using AaxDecrypter;
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using DataLayer;
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using Dinah.Core;
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using LibationFileManager;
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using LibationFileManager.Templates;
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using System;
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using System.IO;
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namespace FileLiberator;
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public partial class DownloadOptions : IDownloadOptions, IDisposable
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{
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public event EventHandler<long>? DownloadSpeedChanged;
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public LibraryBook LibraryBook { get; }
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public LibraryBookDto LibraryBookDto { get; }
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public string DownloadUrl { get; }
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public KeyData[]? DecryptionKeys { get; }
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public required TimeSpan RuntimeLength { get; init; }
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public OutputFormat OutputFormat { get; }
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public required Mpeg4Lib.ChapterInfo ChapterInfo { get; init; }
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public string Title => LibraryBook.Book.Title;
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public string Subtitle => LibraryBook.Book.Subtitle;
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public string? Publisher => LibraryBook.Book.Publisher;
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public string? Language => LibraryBook.Book.Language;
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public string AudibleProductId => LibraryBookDto.AudibleProductId;
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public string? SeriesName => LibraryBookDto.FirstSeries?.Name;
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public string? SeriesNumber => LibraryBookDto.FirstSeries?.Order?.ToString();
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public NAudio.Lame.LameConfig? LameConfig { get; }
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public string UserAgent => AudibleApi.Resources.Download_User_Agent;
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public bool StripUnabridged => Config.AllowLibationFixup && Config.StripUnabridged;
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public bool CreateCueSheet => Config.CreateCueSheet;
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public long DownloadSpeedBps => Config.DownloadSpeedLimit;
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public bool FixupFile => Config.AllowLibationFixup;
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public bool Downsample => Config.AllowLibationFixup && Config.LameDownsampleMono;
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public bool MatchSourceBitrate => Config.AllowLibationFixup && Config.LameMatchSourceBR && Config.LameTargetBitrate;
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public bool MoveMoovToBeginning => Config.MoveMoovToBeginning;
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public AAXClean.FileType? InputType { get; }
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public AudibleApi.Common.DrmType DrmType { get; }
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public AudibleApi.Common.ContentMetadata ContentMetadata { get; }
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public string GetMultipartTitle(MultiConvertFileProperties props)
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=> Templates.ChapterTitle.GetName(LibraryBookDto, props);
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public Configuration Config { get; }
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private readonly IDisposable cancellation;
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public void Dispose()
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{
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cancellation?.Dispose();
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GC.SuppressFinalize(this);
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}
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private DownloadOptions(Configuration config, LibraryBook libraryBook, LicenseInfo licInfo)
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{
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Config = ArgumentValidator.EnsureNotNull(config, nameof(config));
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LibraryBook = ArgumentValidator.EnsureNotNull(libraryBook, nameof(libraryBook));
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ArgumentValidator.EnsureNotNull(licInfo, nameof(licInfo));
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if (licInfo.ContentMetadata.ContentUrl?.OfflineUrl is not string licUrl)
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throw new InvalidDataException("Content license doesn't contain an offline Url");
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DownloadUrl = licUrl;
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DecryptionKeys = licInfo.DecryptionKeys;
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DrmType = licInfo.DrmType;
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ContentMetadata = licInfo.ContentMetadata;
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InputType
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= licInfo.DrmType is AudibleApi.Common.DrmType.Widevine ? AAXClean.FileType.Dash
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: licInfo.DrmType is AudibleApi.Common.DrmType.Adrm && licInfo.DecryptionKeys?.Length == 1 && licInfo.DecryptionKeys[0].KeyPart1.Length == 4 && licInfo.DecryptionKeys[0].KeyPart2 is null ? AAXClean.FileType.Aax
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: licInfo.DrmType is AudibleApi.Common.DrmType.Adrm && licInfo.DecryptionKeys?.Length == 1 && licInfo.DecryptionKeys[0].KeyPart1.Length == 16 && licInfo.DecryptionKeys[0].KeyPart2?.Length == 16 ? AAXClean.FileType.Aaxc
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: null;
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//If DrmType is not Adrm or Widevine, the delivered file is an unencrypted mp3.
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OutputFormat
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= licInfo.DrmType is not AudibleApi.Common.DrmType.Adrm and not AudibleApi.Common.DrmType.Widevine ||
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(config.AllowLibationFixup && config.DecryptToLossy)
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? OutputFormat.Mp3
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: OutputFormat.M4b;
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LameConfig = OutputFormat == OutputFormat.Mp3 ? GetLameOptions(config) : null;
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// no null/empty check for key/iv. unencrypted files do not have them
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LibraryBookDto = LibraryBook.ToDto();
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cancellation =
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config
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.ObservePropertyChanged<long>(
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nameof(Configuration.DownloadSpeedLimit),
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newVal => DownloadSpeedChanged?.Invoke(this, newVal));
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}
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}
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