/// <summary>
///
/// </summary>
/// <param name="recognition"></param>
/// <param name="recording"></param>
/// <param name="exceptionsBag"></param>
/// <param name="cancellationToken"></param>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="ArgumentException"></exception>
/// <returns></returns>
public static async Task BindRecordingAsync(
this IStreamingRecognition recognition,
IRecording recording,
ExceptionsBag?exceptionsBag = null,
CancellationToken cancellationToken = default)
{
recognition = recognition ?? throw new ArgumentNullException(nameof(recognition));
recording = recording ?? throw new ArgumentNullException(nameof(recording));
if (recording.Settings.Format is not AudioFormat.Raw)
{
if (!recording.Header.Any())
{
throw new ArgumentException("recording.Header is empty.");
}
await recognition.WriteAsync(recording.Header, cancellationToken).ConfigureAwait(false);
}
if (recording.Data.Any())
{
await recognition.WriteAsync(recording.Data, cancellationToken).ConfigureAwait(false);
}
async void OnDataReceived(object?_, byte[] bytes)
{
try
{
await recognition.WriteAsync(bytes, cancellationToken).ConfigureAwait(false);
}
catch (Exception exception)
{
exceptionsBag?.OnOccurred(exception);
}
}
void OnStopped(object?o, byte[] bytes)
{
try
{
recording.DataReceived -= OnDataReceived;
recording.Stopped -= OnStopped;
}
catch (Exception exception)
{
exceptionsBag?.OnOccurred(exception);
}
}
recording.DataReceived += OnDataReceived;
recording.Stopped += OnStopped;
}
/// <summary>
/// Waits <seealso cref="IStreamingRecognition.Stopped"/> events. <br/>
/// Can be used with <seealso cref="RecordingExtensions.StopWhenSilence"/> extension.
/// </summary>
/// <param name="recognition"></param>
/// <param name="cancellationToken"></param>
public static async Task WaitStopAsync(
this IStreamingRecognition recognition,
CancellationToken cancellationToken = default)
{
recognition = recognition ?? throw new ArgumentNullException(nameof(recognition));
var source = new TaskCompletionSource <bool>();
using var registration = cancellationToken.Register(() => source.TrySetCanceled());
recognition.Stopped += (_, _) =>
{
source.TrySetResult(true);
};
await source.Task.ConfigureAwait(false);
}
