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Refactor AaxDecrypter

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This commit is contained in:
Michael Bucari-Tovo 2023-01-24 22:25:19 -07:00
parent 4d6c742ae9
commit 25b37c6266
19 changed files with 363 additions and 932 deletions
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80
Source/AaxDecrypter/AaxcDownloadConvertBase.cs
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@ -1,7 +1,7 @@
using System;
using System.Threading.Tasks;
using AAXClean;
using AAXClean;
using Dinah.Core.Net.Http;
using System;
using System.Threading.Tasks;
namespace AaxDecrypter
{
@ -9,8 +9,23 @@ namespace AaxDecrypter
{
public event EventHandler<AppleTags> RetrievedMetadata;
protected AaxFile AaxFile;
protected Mp4Operation aaxConversion;
protected AaxFile AaxFile { get; private set; }
private Mp4Operation aaxConversion;
protected Mp4Operation AaxConversion
{
get => aaxConversion;
set
{
if (aaxConversion is not null)
aaxConversion.ConversionProgressUpdate -= AaxFile_ConversionProgressUpdate;
if (value is not null)
{
aaxConversion = value;
aaxConversion.ConversionProgressUpdate += AaxFile_ConversionProgressUpdate;
}
}
}
protected AaxcDownloadConvertBase(string outFileName, string cacheDirectory, IDownloadOptions dlOptions)
: base(outFileName, cacheDirectory, dlOptions) { }
@ -23,9 +38,23 @@ namespace AaxDecrypter
AaxFile.AppleTags.Cover = coverArt;
}
public override async Task CancelAsync()
{
IsCanceled = true;
await (AaxConversion?.CancelAsync() ?? Task.CompletedTask);
FinalizeDownload();
}
protected override void FinalizeDownload()
{
AaxConversion = null;
base.FinalizeDownload();
}
protected bool Step_GetMetadata()
{
AaxFile = new AaxFile(InputFileStream);
AaxFile.SetDecryptionKey(DownloadOptions.AudibleKey, DownloadOptions.AudibleIV);
if (DownloadOptions.StripUnabridged)
{
@ -44,7 +73,6 @@ namespace AaxDecrypter
DownloadOptions.Downsample,
DownloadOptions.MatchSourceBitrate);
OnRetrievedTitle(AaxFile.AppleTags.TitleSansUnabridged);
OnRetrievedAuthors(AaxFile.AppleTags.FirstAuthor ?? "[unknown]");
OnRetrievedNarrators(AaxFile.AppleTags.Narrator ?? "[unknown]");
@ -55,40 +83,15 @@ namespace AaxDecrypter
return !IsCanceled;
}
protected DownloadProgress Step_DownloadAudiobook_Start()
private void AaxFile_ConversionProgressUpdate(object sender, ConversionProgressEventArgs e)
{
var zeroProgress = new DownloadProgress
{
BytesReceived = 0,
ProgressPercentage = 0,
TotalBytesToReceive = InputFileStream.Length
};
OnDecryptProgressUpdate(zeroProgress);
AaxFile.SetDecryptionKey(DownloadOptions.AudibleKey, DownloadOptions.AudibleIV);
return zeroProgress;
}
protected void Step_DownloadAudiobook_End(DownloadProgress zeroProgress)
{
AaxFile.Close();
CloseInputFileStream();
OnDecryptProgressUpdate(zeroProgress);
}
protected void AaxFile_ConversionProgressUpdate(object sender, ConversionProgressEventArgs e)
{
var duration = AaxFile.Duration;
var remainingSecsToProcess = (duration - e.ProcessPosition).TotalSeconds;
var remainingSecsToProcess = (e.TotalDuration - e.ProcessPosition).TotalSeconds;
var estTimeRemaining = remainingSecsToProcess / e.ProcessSpeed;
if (double.IsNormal(estTimeRemaining))
OnDecryptTimeRemaining(TimeSpan.FromSeconds(estTimeRemaining));
var progressPercent = (e.ProcessPosition / e.TotalDuration);
var progressPercent = e.ProcessPosition / e.TotalDuration;
OnDecryptProgressUpdate(
new DownloadProgress
@ -98,14 +101,5 @@ namespace AaxDecrypter
TotalBytesToReceive = InputFileStream.Length
});
}
public override async Task CancelAsync()
{
IsCanceled = true;
if (aaxConversion != null)
await aaxConversion.CancelAsync();
AaxFile?.Close();
CloseInputFileStream();
}
}
}