public async Task IniciarAnalise(decimal tempo, decimal numCapturas, WebCam webCam, Rectangle retangulo)
{
Repetições = Convert.ToInt32(tempo * numCapturas);
Intervalo = TimeSpan.FromMilliseconds(1000 / Convert.ToInt32(numCapturas));
for (int i = 0; i < Repetições; i++)
{
Capturas.Add(webCam.Matriz.ToImage <Bgr, byte>().GetSubRect(retangulo).GetAverage());
CalcularSinal(i);
await Task.Delay(Intervalo);
}
}
private async Task Enviar()
{
VisualFeature[] visualFeatures = { VisualFeature.Tags, VisualFeature.Categories, VisualFeature.Description };
AnalysisResult ret;
imageStream.Seek(0, SeekOrigin.Begin);
try
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.ShowLoading("analizando imagen"));
ret = await vc.AnalyzeImageAsync(imageStream, visualFeatures.ToList(), null);
}
catch (ClientException c)
{
Debug.WriteLine($"error al consultar servicio: {c.Error} - {c.Message} - {c}");
return;
}
catch (Exception ex)
{
Debug.WriteLine($"error al consultar servicio: {ex}");
return;
}
finally
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.HideLoading());
}
if (ret.Description.Captions != null && ret.Description.Captions.Length > 0)
{
Resultado.Text = ret.Description.Captions[0].Text;
try
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.ShowLoading("traduciendo"));
var secret = Constants.TRANSLATOR_SECRET;
var clientid = Constants.TRANSLATOR_CLIENTID;
var turl = $"http://api.microsofttranslator.com/v2/Http.svc/Translate?text={Uri.EscapeDataString(ret.Description.Captions[0].Text)}&from=en&to=es";
var nurl = new Uri("https://datamarket.accesscontrol.windows.net/v2/OAuth2-13");
var reqDetails = new Dictionary <string, string>()
{
{ "grant_type", "client_credentials" },
{ "client_id", clientid },
{ "client_secret", secret },
{ "scope", "http://api.microsofttranslator.com" }
};
var content = new FormUrlEncodedContent(reqDetails);
var cl = new HttpClient();
string str;
try
{
var post = await cl.PostAsync(nurl, content);
str = await post.Content.ReadAsStringAsync();
}
catch (Exception e)
{
Debug.WriteLine($"excepcion: {e}");
return;
}
var btoken = JToken.Parse(str).Value <string>("access_token");
var req = new HttpRequestMessage(HttpMethod.Get, turl);
req.Headers.Add("Authorization", "Bearer " + btoken);
Stream stream;
try
{
var salida = await cl.SendAsync(req); //cl.GetStringAsync(turl)));
stream = await salida.Content.ReadAsStreamAsync();
}
catch (Exception e)
{
Debug.WriteLine($"excepcion: {e}");
return;
}
Debug.WriteLine($"traducido: {str}");
var dcs = new DataContractSerializer(Type.GetType("System.String"));
str = (string)dcs.ReadObject(stream);
Resultado.Text = str; //ret.Description.Captions[0].Text;
CrossTextToSpeech.Current.Speak(str); //ret.Description.Captions[0].Text);
}
catch (Exception ex)
{
Debug.WriteLine($"excepcion al traducir: {ex}");
Resultado.Text = ret.Description.Captions[0].Text;
}
finally
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.HideLoading());
}
}
ListaTags.ItemsSource = ret.Description.Tags;
// subamos al mobile service
var url = Constants.BLOB_CONTAINER;
var key = Constants.BLOB_KEY;
CloudBlockBlob blob;
try
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.ShowLoading("generando blob"));
var bc = new CloudBlobContainer(new Uri(url), new StorageCredentials(Constants.BLOB_ACCOUNT_NAME, key));
blob = bc.GetBlockBlobReference(Guid.NewGuid() + ".jpg");
imageStream.Seek(0, SeekOrigin.Begin);
await blob.UploadFromStreamAsync(imageStream);
}
catch (Exception ex)
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.ShowError($"excepcion al subir blob: {ex}"));
return;
}
finally
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.HideLoading());
}
Capturas cap;
try
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.ShowLoading("Cargando en App Services"));
var ms = new MobileServiceClient(Constants.APP_SERVICE_URI);
var tabla = ms.GetTable <Capturas>();
cap = new Capturas();
cap.Descripcion = ret.Description.Captions[0].Text;
cap.Url = blob.Uri.ToString();
await tabla.InsertAsync(cap);
}
catch (Exception ex)
{
Debug.WriteLine($"excepcion: {ex}");
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.ShowError($"excepcion al grabar en bd: {ex}"));
return;
}
finally
{
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.HideLoading());
}
Device.BeginInvokeOnMainThread(() => UserDialogs.Instance.Alert($"Éxito! Registro creado en backend, con ID {cap.Id}"));
}