public void Start()
{
Stop();
Running = true;
_cancellationTokenSource = new CancellationTokenSource();
ReadFinished = false;
_readTask = Task.Run(async() =>
{
while (Running && _cancellationTokenSource?.IsCancellationRequested == false)
{
try
{
if (InStream.CanRead)
{
AudioChunk chunk = new AudioChunk(BufferReadSize);
int bytesRead = await InStream.ReadAsync(chunk.Memory, _cancellationTokenSource.Token).ConfigureAwait(false);
if (bytesRead > 0)
{
chunk.Length = bytesRead;
// Wait for the dequeue, comparing in megabytes.
while (Running && (Queue.Count * (BufferReadSize * 0.000001)) > BufferLimit)
{
await Task.Delay(100, _cancellationTokenSource?.Token ?? CancellationToken.None).ConfigureAwait(false);
}
Queue.Enqueue(chunk);
}
else
{
Log.Debug("AudioBuffer: Read EOF");
break;
}
}
else
{
Log.Error("AudioBuffer: Could not read InStream.");
await Task.Delay(25).ConfigureAwait(false);
}
}
catch (OperationCanceledException)
{
return;
}
catch (Exception ex)
{
Log.Error($"AudioBuffer | {ex}");
}
}
ReadFinished = true;
}, _cancellationTokenSource.Token);
_writeTask = Task.Run(async() =>
{
while (Running && _cancellationTokenSource?.IsCancellationRequested == false)
{
if (ReadFinished && Queue.IsEmpty)
{
break;
}
try
{
if (Queue.TryDequeue(out var audioChunk))
{
using (audioChunk)
{
if (OutStream.CanWrite)
{
// We're required to process the chunks in the write task, it's far slower which allows us to change the volume while it's still playing.
if (ProcessBuffer != null)
{
var bytes = audioChunk.Memory;
if (audioChunk.Length != audioChunk.Memory.Length)
{
bytes = audioChunk.Memory.Part(0, audioChunk.Length, false).ToArray();
}
var processedBytes = ProcessBuffer?.Invoke(bytes);
processedBytes.CopyTo(audioChunk.Memory, 0);
audioChunk.Length = processedBytes.Length;
}
await OutStream.WriteAsync(audioChunk.Memory, 0, audioChunk.Length, _cancellationTokenSource.Token);
}
else
{
Log.Error("AudioBuffer: Could not write to OutStream.");
await Task.Delay(25).ConfigureAwait(false);
}
}
}
}
catch (OperationCanceledException)
{
return;
}
catch (Exception ex)
{
Log.Error($"AudioBuffer | {ex.Message}");
Log.Debug($"AudioBuffer | {ex}");
await Task.Delay(25).ConfigureAwait(false);
}
}
}, _cancellationTokenSource.Token);
}
