v0.8: TCP transport via gatuna tunnel, session IDs, pre-synth playback, server Rust rewrite

Robovoice.App/Orchestrator.cs

@@ -19,8 +19,6 @@ internal sealed class Orchestrator : IAsyncDisposable
     private bool _playing;
     private Task? _synthTask;
     private CancellationTokenSource? _synthCts;
-    private System.Threading.Timer? _segmentTimer;
-    private static readonly TimeSpan SegmentTimeout = TimeSpan.FromMilliseconds(250);
 
     public string OutputDeviceName { get; set; } = string.Empty;
 
@@ -51,7 +49,6 @@ internal sealed class Orchestrator : IAsyncDisposable
                     _log($"SEGMENT: \"{msg.Text}\" ({msg.Text.Length} chars)");
                     _pendingTexts.Enqueue(msg.Text);
                     EnsureSynthTask();
-                    ResetSegmentTimer();
                 }
             }
             else
@@ -67,33 +64,11 @@ internal sealed class Orchestrator : IAsyncDisposable
                     _log("FINAL: (empty)");
                 }
 
-                CancelSegmentTimer();
                 TransitionToPlaying();
             }
         }
     }
 
-    private void ResetSegmentTimer()
-    {
-        _segmentTimer?.Dispose();
-        _segmentTimer = new System.Threading.Timer(_ => OnSegmentTimeout(), null, SegmentTimeout, Timeout.InfiniteTimeSpan);
-    }
-
-    private void CancelSegmentTimer()
-    {
-        _segmentTimer?.Dispose();
-        _segmentTimer = null;
-    }
-
-    private void OnSegmentTimeout()
-    {
-        _log("STT: segment timeout, starting playback early");
-        lock (_stateLock)
-        {
-            TransitionToPlaying();
-        }
-    }
-
     private void TransitionToPlaying()
     {
         if (_playing)
@@ -104,13 +79,11 @@ internal sealed class Orchestrator : IAsyncDisposable
             if (_synthTask is null || _synthTask.IsCompleted)
             {
                 _log("TTS: nothing to play");
-                CancelSegmentTimer();
             }
             return;
         }
 
         _playing = true;
-        CancelSegmentTimer();
 
         int sampleRate = _bufferSampleRate;
         var chunks = _audioBuffer.ToList();
@@ -189,7 +162,6 @@ internal sealed class Orchestrator : IAsyncDisposable
     {
         lock (_stateLock)
         {
-            CancelSegmentTimer();
             _synthCts?.Cancel();
             _synthCts?.Dispose();
             _synthTask = null;
@@ -209,7 +181,7 @@ internal sealed class Orchestrator : IAsyncDisposable
     public async Task InitializeTtsAsync()
     {
         _log("Initializing TTS engine...");
-        await _tts.InitializeAsync();
+        await Task.Run(() => _tts.InitializeAsync());
         _log($"TTS ready (sample rate: {_tts.SampleRate} Hz)");
     }
 
@@ -269,15 +241,17 @@ internal sealed class Orchestrator : IAsyncDisposable
     public async ValueTask DisposeAsync()
     {
         if (_disposed) return;
-        _currentCts?.Cancel();
+        _disposed = true;
+
+        try { _currentCts?.Cancel(); } catch { }
         _currentCts?.Dispose();
-        _synthCts?.Cancel();
+
+        try { _synthCts?.Cancel(); } catch { }
         _synthCts?.Dispose();
-        CancelSegmentTimer();
+
         _sttSource.TranscriptReceived -= OnTranscript;
         await _sttSource.DisposeAsync();
         await _tts.DisposeAsync();
         _audioOutput.Dispose();
-        _disposed = true;
     }
 }