/// <summary>
/// Converts the text value to an audio file and then plays the audio file.
/// </summary>
/// <param name="textToSpeak">stores the text to be converted to audio</param>
public async Task <bool> SpeakTheTextAsync(string textToSpeak)
{
_misty.ChangeLED(0, 255, 255, null); // light blue
IsBusy = true; // Set busy flag so others will wait until not busy speaking the text.
try
{
_misty.SkillLogger.LogVerbose($"MistySpeechApi : IN speakTheTextAsync -- textToSpeak = XX{textToSpeak}XX");
// Parameters to send with request to Google TTS API.
// For more information see the Google TTS API developer docs:
// https://cloud.google.com/text-to-speech/docs/reference/rest/v1beta1/text/synthesize
var arguments = @"{
'input': {
'text': '" + textToSpeak +
@"'},
'voice': {
'languageCode': 'en-US',
'ssmlGender': 'FEMALE'
},
'audioConfig': {
'audioEncoding': 'LINEAR16',
'effectsProfileId': [
'handset-class-device'
],
'pitch': 0,
'speakingRate': 0.91
}
}";
_misty.SkillLogger.LogVerbose("SendExternalRequestAsync - Sending TextToSpeak to Google TTS Api");
ISendExternalRequestResponse sdata = await _misty.SendExternalRequestAsync("POST", MistyApiInfo.GoogleTextToSpeechUrl, "Bearer", GoogleAuthToken, arguments, false, false, null, "application/json");
_misty.SkillLogger.LogVerbose("SendExternalRequestAsync - BACK FROM Google TTS Api");
string jsonStrResponse = sdata.Data.Data.ToString();
Newtonsoft.Json.Linq.JObject jsonResp = Newtonsoft.Json.Linq.JObject.Parse(jsonStrResponse);
byte[] audio_data = Convert.FromBase64String(jsonResp["audioContent"].ToString());
string audio_filename = "tts_response.wav";
// Save the base64 audio file.
_misty.SaveAudio(audio_filename, audio_data, true, true, null);
_misty.Wait(5000);
_misty.ChangeLED(0, 255, 0, null); // Green
return(true);
}
catch (Exception ex)
{
_misty.SkillLogger.Log($"MistySpeechApi: IN SpeechResponseCallback: => Exception", ex);
return(true);
}
finally
{
IsBusy = false;
}
}
private void ProcessQueryResult(object sender, string stringResult)
{
JObject dynamicResponse = JObject.Parse(stringResult);
string color = ((string)dynamicResponse["queryResult"]?["parameters"]?["Color"])?.ToLower();
string position = ((string)dynamicResponse["queryResult"]?["parameters"]?["Direction"])?.ToLower();
string outputAudioString = (string)dynamicResponse["outputAudio"];
byte[] outputAudio = Convert.FromBase64String(outputAudioString);
try
{
JsonConverter[] converters = new JsonConverter[2] {
new ProtoByteStringConverter(), new OutputAudioEncodingConverter()
};
DetectIntentResponse response = JsonConvert.DeserializeObject <DetectIntentResponse>(stringResult, converters);
string intent = response?.QueryResult?.Intent?.DisplayName;
string defaultResponse = response?.QueryResult?.FulfillmentText;
switch (intent)
{
case "ChangeLED":
if (color != null)
{
Color argbColor = Color.FromName(color);
_misty.ChangeLED(argbColor.R, argbColor.G, argbColor.B, null);
}
break;
case "Joke":
_misty.PlayAudio(defaultResponse, 30, null);
break;
case "Move your arms":
if (position == "up")
{
_misty.MoveArms(-90, -90, 50, 50, null, AngularUnit.Degrees, null);
}
if (position == "down")
{
_misty.MoveArms(90, 90, 50, 50, null, AngularUnit.Degrees, null);
}
_misty.Halt(null, null);
break;
case "MoveHeadPosition":
if (position == "up")
{
_misty.MoveHead(-100, 0, 0, 50, AngularUnit.Degrees, null);
}
if (position == "down")
{
_misty.MoveHead(100, 0, 0, 50, AngularUnit.Degrees, null);
}
if (position == "right")
{
_misty.MoveHead(0, 0, -100, 50, AngularUnit.Degrees, null);
}
if (position == "left")
{
_misty.MoveHead(0, 0, 100, 50, AngularUnit.Degrees, null);
}
break;
default:
_misty.SaveAudio("tts.wav", outputAudio, true, true, null);
break;
}
}
catch (Exception ex)
{
}
}