public static int Init()
{
// Create a queue to receive completed speech to text results
MessageQueue = new ConcurrentQueue <QueueItem>();
// Configure the recognizer. This requires you to have an active Azure Speech to Text service subscription:
// https://azure.microsoft.com/en-gb/services/cognitive-services/speech-to-text
var config = SpeechConfig.FromSubscription("YOUR_SUBSCRIPTION_KEY", "YOUR_SUBSCRIPTION_REGION");
Recognizer = new SpeechRecognizer(config);
// Add a callback to receive recognized text, and queue it up for a Lua callback called "onSpeech", which should be registered by the caller in Lua
Recognizer.Recognized += (s, e) =>
{
if (e.Result.Reason == ResultReason.RecognizedSpeech)
{
Console.WriteLine("Recognized: " + e.Result.Text);
MessageQueue.Enqueue(new QueueItem {
Callback = "onSpeech", Param = e.Result.Text
});
}
};
EventHandler <RecognitionEventArgs> MakeEventFunc(string name) =>
(object s, RecognitionEventArgs e) => MessageQueue.Enqueue(new QueueItem {
Callback = name
});
// Register some Lua callbacks for the other events we get from the recognizer
Recognizer.SessionStarted += (s, e) => MakeEventFunc("onSpeechSessionStarted");
Recognizer.SessionStopped += (s, e) => MakeEventFunc("onSpeechSessionStopped");
Recognizer.SpeechStartDetected += (s, e) => MakeEventFunc("onSpeechStartDetected");
Recognizer.SpeechEndDetected += (s, e) => MakeEventFunc("onSpeechEndDetected");
// Register our Lua function to enable listening
StartListeningDelegate = new FFI.FFIFunction(OnStartListening);
FFI.RegisterGlobalFunction("StartListening", StartListeningDelegate, 0, IntPtr.Zero);
// Register our Lua function to stop listening
StopListeningDelegate = new FFI.FFIFunction(OnStopListening);
FFI.RegisterGlobalFunction("StopListening", StopListeningDelegate, 0, IntPtr.Zero);
// Register our update function for queue processing
UpdateDelegate = new Observer.UpdateFunction(Update);
Observer.AddCallbackUpdate(UpdateDelegate, IntPtr.Zero);
// zero is init success
return(0);
}
