2f082a9656
- Add more null safety - Fix possible FilePathCache race condition - Add MoveFilesToBooksDir progress reporting - All metadata is now downloaded in parallel with other post-success tasks. - Improve download resuming and file cleanup reliability - The downloader creates temp files with a UUID filename and does not insert them into the FilePathCache. Created files only receive their final file names when they are moved into the Books folder. This is to prepare for a future plan re naming templates
95 lines
4.1 KiB
C#
95 lines
4.1 KiB
C#
using AaxDecrypter;
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using AAXClean;
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using Dinah.Core;
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using DataLayer;
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using LibationFileManager;
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using System;
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using System.IO;
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using LibationFileManager.Templates;
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#nullable enable
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namespace FileLiberator
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{
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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 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 float? SeriesNumber => LibraryBookDto.FirstSeries?.Number;
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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 && licInfo.ContentMetadata.ContentReference.Codec != Ac4Codec)
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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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LibraryBookDto.Codec = licInfo.ContentMetadata.ContentReference.Codec;
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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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}
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