feat: extract audio conversion to separate class and refine audio extraction

src/StreamShorts.Console/Commands/DefaultCommand.cs

@@ -3,12 +3,14 @@ namespace StreamShorts.Console.Commands;
 internal class DefaultCommand(
   IFileSystem fileSystem,
   IAnsiConsole console,
-  IAudioExtractor audioExtractor
+  IAudioExtractor audioExtractor,
+  IAudioConverter audioConverter
 ) : AsyncCommand<DefaultCommand.Settings>
 {
   private readonly IFileSystem _fileSystem = fileSystem ?? throw new ArgumentNullException(nameof(fileSystem));
   private readonly IAnsiConsole _console = console ?? throw new ArgumentNullException(nameof(console));
   private readonly IAudioExtractor _audioExtractor = audioExtractor ?? throw new ArgumentNullException(nameof(audioExtractor));
+  private readonly IAudioConverter _audioConverter = audioConverter ?? throw new ArgumentNullException(nameof(audioConverter));
 
   internal class Settings : CommandSettings
   {
@@ -61,6 +63,23 @@ internal class DefaultCommand(
 
     _console.MarkupLine($"[blue]Audio extracted[/] [green]successfully![/]");
 
+    Stream? wavStream = null;
+
+    _console.Status()
+      .Spinner(Spinner.Known.Dots)
+      .Start("Converting audio...", ctx =>
+      {
+        wavStream = _audioConverter.ConvertMp3ToWav16(audioStream);
+      });
+
+    if (wavStream is null)
+    {
+      _console.MarkupLine("[red]Failed[/] to convert audio to WAV format.");
+      return 2;
+    }
+
+    _console.MarkupLine($"[blue]Audio converted[/] [green]successfully![/]");
+
     return 0;
   }
 }

src/StreamShorts.Console/Program.cs

@@ -37,6 +37,7 @@ try
       services.AddSingleton(AnsiConsole.Console);
       services.AddSingleton<IFileSystem, FileSystem>();
       services.AddSingleton<IAudioExtractor, AudioExtractor>();
+      services.AddSingleton<IAudioConverter, AudioConverter>();
     })
     .BuildApp()
     .RunAsync(args);
@@ -53,25 +54,6 @@ finally
   await Log.CloseAndFlushAsync();
 }
 
-// using var mp3Stream = new MemoryStream();
-// using var mp4Stream = new FileStream(args[0], FileMode.Open, FileAccess.Read);
-
-// var wasExtracted = await FFMpegArguments
-//   .FromPipeInput(new StreamPipeSource(mp4Stream))
-//   .OutputToPipe(
-//     new StreamPipeSink(mp3Stream),
-//     o => o.DisableChannel(Channel.Video).ForceFormat("mp3")
-//   )
-//   .ProcessAsynchronously();
-
-// // Step 2: Convert MP3 stream to 16khz wave format
-// mp3Stream.Position = 0;
-// using var reader = new Mp3FileReader(mp3Stream);
-// var outFormat = new WaveFormat(16000, reader.WaveFormat.Channels);
-// using var resampler = new MediaFoundationResampler(reader, outFormat);
-// using var waveStream = new MemoryStream();
-// WaveFileWriter.WriteWavFileToStream(waveStream, resampler);
-
 // // Step 3: Split the wave stream into 2 minute segments
 // waveStream.Position = 0;
 // var segmentDuration = TimeSpan.FromMinutes(2);