public async Task SayAsync(string content)
{
using var logger = _logger.Action($"Say {content}");
try
{
var speech = await _renderSpeechService.RenderSpeechAsync(content).ConfigureAwait(false);
_player.Stop();
speech.Seek(0, SeekOrigin.Begin);
_player.Stream = speech;
_player.Play();
}
catch (RenderSpeechException ex)
{
logger.Failure(ex.Message);
}
}
/// <summary>
/// Renders specified content into a stream of audio data ready for playback
/// </summary>
/// <param name="content">Speech to render into audio</param>
/// <returns>A stream containing the audio data</returns>
public async Task <Stream> RenderSpeechAsync(string content)
{
bool haveSource;
TaskCompletionSource <Stream>?tcsStream;
lock (_padlock)
{
if (_completedRenders.TryGetValue(content, out var existingStream))
{
return(existingStream);
}
haveSource = _pendingRenders.TryGetValue(content, out tcsStream);
}
if (haveSource)
{
return(await tcsStream !.Task.ConfigureAwait(false));
}
tcsStream = new TaskCompletionSource <Stream>();
lock (_padlock)
{
_pendingRenders[content] = tcsStream;
}
var stream = await _renderSpeechService.RenderSpeechAsync(content).ConfigureAwait(false);
lock (_padlock)
{
_completedRenders[content] = stream;
_pendingRenders.Remove(content);
}
tcsStream.SetResult(stream);
return(stream);
}