/// <summary>
/// Initializes a new instance of the AudioProcessor class given a specified window size, step size and an audio format handler
/// </summary>
/// <param name="windowSize">The number of seconds to be included in each request</param>
/// <param name="stepSize">The number of seconds between every request</param>
/// <param name="audioFormatHandler">A helper handler to process the input stream, and verify its type</param>
public AudioProcessor(int windowSize, int stepSize, AudioFormatHandler audioFormatHandler)
{
if (windowSize <= 0)
{
throw new ArgumentException("Window size must be a positive integer", nameof(windowSize));
}
if (stepSize <= 0)
{
throw new ArgumentException("Step size must be a positive integer", nameof(stepSize));
}
_windowSize = windowSize;
_stepSize = stepSize;
_audioFormatHandler = audioFormatHandler ?? throw new ArgumentNullException(nameof(audioFormatHandler));
_secondsQueue = new Queue <byte[]>();
_wavesQueue = new ConcurrentQueue <byte[]>();
_lastSecond = null;
_lastSecondIndex = 0;
_maxWaveHeaderSize = audioFormatHandler.InputAudioFormat.Container.MaxHeaderSize;
_headerFound = false;
_headerBuffer = new byte[_maxWaveHeaderSize];
_headerBufferIndex = 0;
}
/// <summary>
/// Initializes a new instance of the RecognitionClient class.
/// </summary>
/// <param name="clientId">ID associated with all requests related to this client</param>
/// <param name="speakerIds">Speaker IDs for identification</param>
/// <param name="stepSize">Step size in seconds</param>
/// <param name="windowSize">Number of seconds sent per request</param>
/// <param name="audioFormat">Audio format</param>
/// <param name="resultCallback">Value callback action consisted of identification result, client ID and request ID</param>
/// <param name="serviceClient">Client used in identifying the streamed audio file</param>
/// <param name="httpRequests"></param>
internal RecognitionClient(Guid clientId, Guid[] speakerIds, int stepSize, int windowSize,
AudioFormat audioFormat, Action <RecognitionResult> resultCallback,
SpeakerIdentificationServiceClient serviceClient, List <Task> httpRequests)
{
ClientId = clientId;
SpeakerIds = speakerIds;
StepSize = stepSize;
WindowSize = windowSize;
_requestId = 0;
AudioFormat = audioFormat;
var audioFormatHandler = new AudioFormatHandler(audioFormat);
_serviceClient = serviceClient;
_httpRequests = httpRequests;
_audioProcessor = new AudioProcessor(WindowSize, StepSize, audioFormatHandler);
_idClient = new IdentificationClient(SpeakerIds, resultCallback);
_requestingTaskCancelletionTokenSource = new CancellationTokenSource();
_requestingTask = Task.Run(async() =>
{
await SendingRequestsTask(_requestingTaskCancelletionTokenSource.Token).ConfigureAwait(false);
});
}
