public AzureDescriptionModel GetAzureDescriptionImage(byte[] imageBytes, string base64ImageString)
{
AzureDescriptionModel imageDescribe = null;
Logger.Info($"AzureBLogic START - GetAzureDescriptionImage Action from image: '{base64ImageString}'");
try
{
DateTime currentDateTime = DateTime.Now;
if (!dateTimeInitAzureRequest.HasValue)
{
dateTimeInitAzureRequest = currentDateTime;
}
else
{
TimeSpan intervalToEvaluate = currentDateTime - dateTimeInitAzureRequest.Value;
if (intervalToEvaluate.Seconds > 60)
{
dateTimeInitAzureRequest = currentDateTime;
currentRequestAzure = 1;
}
}
if (currentRequestAzure <= maxRequestAzure)
{
currentRequestAzure++;
ReadAzureAppConfiguration();
imageDescribe = Task.Run(async() => await CallAzureDescribe(imageBytes)).Result;
if (useAzureTranslate)
{
imageDescribe = Task.Run(async() => await CallAzureTranslate(imageDescribe)).Result;
}
}
else
{
Logger.Error($"AzureBLogic ERROR - GetAzureDescriptionImage Action Maximum requests per minute have been exhausted.");
imageDescribe = new AzureDescriptionModel()
{
ErrorMessage = $"Alcanzado el limite de peticiones por minuto, actualmente son: '{maxRequestAzure}' por minuto."
};
}
}
catch (Exception exc)
{
Logger.Error(exc, "AzureBLogic ERROR - GetAzureDescriptionImage Action");
}
finally
{
Logger.Info($"AzureBLogic FINISH - GetAzureDescriptionImage Action from image: '{base64ImageString}' with response: '{imageDescribe}'");
}
return(imageDescribe);
}
private async Task <AzureDescriptionModel> CallAzureDescribe(byte[] imageBytes)
{
Logger.Error($"AzureBLogic START - CallAzureDescribe Action");
HttpClient client = new HttpClient();
HttpResponseMessage response;
AzureDescribeResponseModel imageDescribeResponse;
AzureDescriptionModel imageDescribe = null;
// Request headers
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", subscriptionKey);
// Add the byte array as an octet stream to the request body.
using (ByteArrayContent content = new ByteArrayContent(imageBytes))
{
content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
// Asynchronously call the REST API method.
response = await client.PostAsync(urlDescribe, content);
}
if (response.StatusCode == HttpStatusCode.OK)
{
// Asynchronously get the JSON response.
string contentString = await response.Content.ReadAsStringAsync();
imageDescribeResponse = JsonConvert.DeserializeObject <AzureDescribeResponseModel>(contentString);
if (imageDescribeResponse != null)
{
imageDescribe = imageDescribeResponse.Description;
}
else
{
Logger.Error($"AzureBLogic ERROR - CallAzureDescribe Action response OK but NOT mapped object result");
}
}
else
{
Logger.Error($"AzureBLogic ERROR - CallAzureDescribe Action response: '{response.RequestMessage}'");
}
return(imageDescribe);
}
private async Task <AzureDescriptionModel> CallAzureTranslate(AzureDescriptionModel imageDescribe)
{
Logger.Error($"AzureBLogic START - CallAzureTranslate Action, imageDescribe: '{imageDescribe}'");
HttpClient client = new HttpClient();
HttpResponseMessage response;
List <AzureTranslateResponse> imageTranslateResponse;
if (imageDescribe != null && imageDescribe.Captions.Count > 0 && !string.IsNullOrEmpty(imageDescribe.Captions[0].Text))
{
// Request headers
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", AzureTranslateSubscriptionKey);
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Region", AzureTranslateRegion);
List <AzureTranslateRequest> azureTranslateRequestList = new List <AzureTranslateRequest>();
foreach (AzureCaptionModel azureCaptionModel in imageDescribe.Captions)
{
AzureTranslateRequest azureTranslateRequest = new AzureTranslateRequest()
{
Text = azureCaptionModel.Text
};
azureTranslateRequestList.Add(azureTranslateRequest);
}
var content = new StringContent(JsonConvert.SerializeObject(azureTranslateRequestList), Encoding.UTF8, "application/json");
// Asynchronously call the REST API method.
response = await client.PostAsync(urlTranslate, content);
if (response.StatusCode == HttpStatusCode.OK)
{
// Asynchronously get the JSON response.
string contentString = await response.Content.ReadAsStringAsync();
imageTranslateResponse = JsonConvert.DeserializeObject <List <AzureTranslateResponse> >(contentString);
if (imageTranslateResponse != null)
{
int imageToTranslate = 0;
foreach (AzureTranslateResponse azureTranslateResponse in imageTranslateResponse)
{
foreach (AzureTranslateTranslation azureTranslateTranslation in azureTranslateResponse.translations)
{
if (imageToTranslate < imageDescribe.Captions.Count)
{
imageDescribe.Captions[imageToTranslate].Text = azureTranslateTranslation.text;
imageToTranslate++;
}
}
}
}
else
{
Logger.Error($"AzureBLogic ERROR - CallAzureTranslate Action response OK but NOT mapped object result");
}
}
else
{
Logger.Error($"AzureBLogic ERROR - CallAzureTranslate Action response: '{response.RequestMessage}'");
}
}
else
{
Logger.Error($"AzureBLogic ERROR - CallAzureTranslate Action not received imageDescribe object");
}
return(imageDescribe);
}
private bool GetAndSetDescriptionToImage(string currentImagePath, ImageModel currentImage)
{
Logger.Info($"MainWindow START - GetAndSetDescriptionToImage Action to path: '{currentImagePath}'");
BitmapDecoder decoder;
BitmapEncoder encoder;
bool resultGetOperation = false;
try
{
using Stream fileStream = new FileStream(currentImagePath, FileMode.Open, FileAccess.Read, FileShare.Read);
decoder = new JpegBitmapDecoder(fileStream, BitmapCreateOptions.None, BitmapCacheOption.None);
var frame = decoder.Frames[0];
frame = BitmapFrame.Create(frame);
BitmapMetadata metadata = (BitmapMetadata)frame.Metadata;
byte[] imageBytes = File.ReadAllBytes(currentImagePath);
string base64ImageString = Convert.ToBase64String(imageBytes);
Logger.Info($"MainWindow START - GetAndSetDescriptionToImage Action Get Azure Image Info from bytes[] of stringbase64: '{base64ImageString}'");
AzureDescriptionModel azureDescribeResponseModel = azureBLogic.GetAzureDescriptionImage(imageBytes, base64ImageString);
if (azureDescribeResponseModel != null &&
string.IsNullOrEmpty(azureDescribeResponseModel.ErrorMessage) &&
azureDescribeResponseModel.Captions != null &&
azureDescribeResponseModel.Captions.Count > 0)
{
Logger.Info($"MainWindow START - GetAndSetDescriptionToImage Action get '{azureDescribeResponseModel.Captions.Count}' Description from Azure");
foreach (var caption in azureDescribeResponseModel.Captions)
{
Logger.Info($"MainWindow START - GetAndSetDescriptionToImage Action Image Caption {caption.Text} with Confidence {caption.Confidence}");
}
List <string> authors = new List <string>()
{
"Juan Manuel"
};
ReadOnlyCollection <string> authorsCollection = new ReadOnlyCollection <string>(authors);
metadata.Author = authorsCollection;
metadata.Title = azureDescribeResponseModel.Captions[0].Text;
metadata.ApplicationName = "GetDescriptionImageApp";
metadata.Comment = azureDescribeResponseModel.Captions[0].Text;
currentImage.Alt = metadata.Comment;
currentImage.Autor = metadata.Author.ToString();
currentImage.Description = metadata.Comment;
encoder = new JpegBitmapEncoder();
encoder.Frames.Add(frame);
string newImageUri = ReplaceUri(currentImagePath);
using var targetStream = new FileStream(newImageUri, FileMode.Create);
encoder.Save(targetStream);
resultGetOperation = true;
}
else if (azureDescribeResponseModel != null && !string.IsNullOrEmpty(azureDescribeResponseModel.ErrorMessage))
{
resultGetOperation = false;
MessageBox.Show(azureDescribeResponseModel.ErrorMessage, "Error procesando imagenes", MessageBoxButton.OK, MessageBoxImage.Error);
}
else if (azureDescribeResponseModel == null)
{
resultGetOperation = false;
MessageBox.Show($"No se ha podido obtener información de Azure de la imaten '{currentImagePath}'", "Error procesando imagenes", MessageBoxButton.OK, MessageBoxImage.Error);
}
else
{
resultGetOperation = false;
Logger.Info($"MainWindow START - GetAndSetDescriptionToImage Action NOT get Description from Azure");
}
}
catch (Exception exc)
{
resultGetOperation = false;
Logger.Error(exc, "MainWindow ERROR - GetAndSetDescriptionToImage Action");
MessageBox.Show("Error Generico al intentar obtener la descripción de la imagen/es.", "Error procesando imagenes", MessageBoxButton.OK, MessageBoxImage.Error);
}
finally
{
Logger.Info("MainWindow FINISH - GetAndSetDescriptionToImage Action");
}
return(resultGetOperation);
}