Add mp3 embedded cuesheet (#677)

Source/AaxDecrypter/AaxcDownloadConvertBase.cs

@@ -81,14 +81,7 @@ namespace AaxDecrypter
 					AaxFile.AppleTags.AppleListBox.EditOrAddFreeformTag(tagDomain, "PART", part.ToString());
 			}
 
-			//Finishing configuring lame encoder.
+			OnInitialized();
-			if (DownloadOptions.OutputFormat == OutputFormat.Mp3)
-				MpegUtil.ConfigureLameOptions(
-					AaxFile,
-					DownloadOptions.LameConfig,
-					DownloadOptions.Downsample,
-					DownloadOptions.MatchSourceBitrate);
-
 			OnRetrievedTitle(AaxFile.AppleTags.TitleSansUnabridged);
 			OnRetrievedAuthors(AaxFile.AppleTags.FirstAuthor ?? "[unknown]");
 			OnRetrievedNarrators(AaxFile.AppleTags.Narrator ?? "[unknown]");
@@ -98,5 +91,7 @@ namespace AaxDecrypter
 
 			return !IsCanceled;
 		}
+
+		protected virtual void OnInitialized() { }
 	}
 }

Source/AaxDecrypter/AaxcDownloadMultiConverter.cs

@@ -21,6 +21,18 @@ namespace AaxDecrypter
 			AsyncSteps["Step 3: Download Clips and Bookmarks"] = Step_DownloadClipsBookmarksAsync;
 		}
 
+		protected override void OnInitialized()
+		{
+			//Finishing configuring lame encoder.
+			if (DownloadOptions.OutputFormat == OutputFormat.Mp3)
+				MpegUtil.ConfigureLameOptions(
+					AaxFile,
+					DownloadOptions.LameConfig,
+					DownloadOptions.Downsample,
+					DownloadOptions.MatchSourceBitrate,
+					chapters: null);
+		}
+
 		/*
 https://github.com/rmcrackan/Libation/pull/127#issuecomment-939088489
 

Source/AaxDecrypter/AaxcDownloadSingleConverter.cs

@@ -3,7 +3,6 @@ using AAXClean.Codecs;
 using Dinah.Core.Net.Http;
 using FileManager;
 using System;
-using System.Diagnostics;
 using System.IO;
 using System.Threading.Tasks;
 
@@ -26,6 +25,18 @@ namespace AaxDecrypter
 			AsyncSteps[$"Step {step++}: Create Cue"] = Step_CreateCueAsync;
 		}
 
+		protected override void OnInitialized()
+		{
+			//Finishing configuring lame encoder.
+			if (DownloadOptions.OutputFormat == OutputFormat.Mp3)
+				MpegUtil.ConfigureLameOptions(
+					AaxFile,
+					DownloadOptions.LameConfig,
+					DownloadOptions.Downsample,
+					DownloadOptions.MatchSourceBitrate,
+					DownloadOptions.ChapterInfo);
+		}
+
 		protected async override Task<bool> Step_DownloadAndDecryptAudiobookAsync()
 		{
 			FileUtility.SaferDelete(OutputFileName);

Source/AaxDecrypter/MpegUtil.cs

@@ -8,7 +8,12 @@ namespace AaxDecrypter
 	public static class MpegUtil
 	{
 		private const string TagDomain = "com.pilabor.tone";
-		public static void ConfigureLameOptions(Mp4File mp4File, LameConfig lameConfig, bool downsample, bool matchSourceBitrate)
+		public static void ConfigureLameOptions(
+			Mp4File mp4File,
+			LameConfig lameConfig,
+			bool downsample,
+			bool matchSourceBitrate,
+			ChapterInfo chapters)
 		{
 			double bitrateMultiple = 1;
 
@@ -53,6 +58,12 @@ namespace AaxDecrypter
 
 			if (mp4File.AppleTags.AppleListBox.GetFreeformTagString(TagDomain, "PART") is string part)
 				lameConfig.ID3.UserDefinedText.Add("PART", part);
+
+			if (chapters?.Count > 0)
+			{
+				var cue = Cue.CreateContents(lameConfig.ID3.Title + ".mp3", chapters);
+				lameConfig.ID3.UserDefinedText.Add("CUESHEET", cue);
+			}
 		}
 	}
 }

Source/FileLiberator/ConvertToMp3.cs

@@ -51,18 +51,19 @@ namespace FileLiberator
 
 					var config = Configuration.Instance;
 					var lameConfig = GetLameOptions(config);
-
+					var chapters = m4bBook.GetChaptersFromMetadata();
 					//Finishing configuring lame encoder.
 					AaxDecrypter.MpegUtil.ConfigureLameOptions(
 						m4bBook,
 						lameConfig,
 						config.LameDownsampleMono,
-						config.LameMatchSourceBR);
+						config.LameMatchSourceBR,
+						chapters);
 
-					using var mp3File = File.OpenWrite(Path.GetTempFileName());
+					using var mp3File = File.Open(Path.GetTempFileName(), FileMode.OpenOrCreate, FileAccess.ReadWrite);
 					try
 					{
-						Mp4Operation = m4bBook.ConvertToMp3Async(mp3File, lameConfig);
+						Mp4Operation = m4bBook.ConvertToMp3Async(mp3File, lameConfig, chapters);
 						Mp4Operation.ConversionProgressUpdate += M4bBook_ConversionProgressUpdate;
 						await Mp4Operation;