void OnTextResult(SpeechToTextResult result)
{
TextAlternative[] a = result.TextAlternatives;
textResult = "";
for (int i = 0; i < a.Length; i++)
{
if (i > 0)
{
textResult += "/";
}
textResult += result.TextAlternatives[i].Text;
Debug.Log(i + ":" + result.TextAlternatives[i].Text);
}
}
/// <summary>
/// Translates speech to text by making a request to the speech-to-text API.
/// </summary>
protected override IEnumerator TranslateRecordingToText(AudioClip clip)
{
var request = new Request("POST", API_URL +
"?" + API_PARAM_APIKEY + "=" + m_APIKey);
request.headers.Add("Content-Type", "application/json");
// Construct JSON request body.
var reqJSON = new GoogleJSONRequest();
var reqConf = new GoogleJSONRecognitionConfig();
var reqAudio = new GoogleJSONRecognitionAudio();
reqConf.encoding = "LINEAR16";
reqConf.sampleRateHertz = clip.frequency;
reqConf.languageCode = languageCode;
reqConf.maxAlternatives = maxAlternatives;
reqAudio.content = Convert.ToBase64String(ConvertToLinear16(clip));
reqJSON.config = reqConf;
reqJSON.audio = reqAudio;
request.Text = JsonUtility.ToJson(reqJSON);
request.Send();
Debug.Log("GooglePreRecordedSpeechToTextService: Sent request");
while (!request.isDone)
{
yield return(null);
}
// Response.
string responseText = request.response.Text;
if (responseText == null)
{
responseText = "";
}
// Parse error response.
string errorMessage = null;
try {
GoogleJSONResponseError ers = JsonUtility.FromJson <GoogleJSONResponseError>(responseText);
if (ers != null && ers.error != null && ers.error.code != 0)
{
errorMessage = "(" + ers.error.code + ")"
+ (string.IsNullOrEmpty(ers.error.message) ? "unknown error" : ers.error.message);
}
else if (request.response.status >= 400)
{
errorMessage = "(" + request.response.status + ")Network or Http error";
}
} catch (ArgumentException ae) {
errorMessage = "(" + request.response.status + ")" + ae.Message;
}
if (errorMessage != null)
{
Debug.Log("GooglePreRecordedSpeechToTextService: Error returned." + errorMessage);
if (OnError != null)
{
OnError(errorMessage);
}
yield break;
}
// Parse response.
GoogleJSONResponse resp = JsonUtility.FromJson <GoogleJSONResponse>(responseText);
SpeechToTextResult textResult = new SpeechToTextResult();
if (resp != null && resp.results != null && resp.results.Length > 0)
{
var resp1 = resp.results[0];
if (resp1 != null && resp1.alternatives.Length > 0)
{
textResult.TextAlternatives = resp1.alternatives;
}
}
if (textResult.TextAlternatives == null || textResult.TextAlternatives.Length == 0)
{
textResult.TextAlternatives = new TextAlternative[1];
TextAlternative textAlt = new GoogleJSONRecognitionAlternative();
textAlt.Text = "";
textResult.TextAlternatives[0] = textAlt;
}
Debug.Log("GooglePreRecordedSpeechToTextService: Response returned.");
if (OnTextResult != null)
{
OnTextResult(textResult);
}
}
