public static async Task <HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = "Recognition/ExtractAllBarcodes")] HttpRequestMessage req, TraceWriter log, ExecutionContext context)
{
try
{
if (!DemoConfiguration.UnlockSupport(log))
{
return(GenerateErrorMessage(ApiError.LicenseNotSet, req));
}
var leadParameterObject = ParseLeadWebRequestParameters(req);
if (!leadParameterObject.Successful)
{
return(GenerateErrorMessage(ApiError.InvalidRequest, req));
}
var barcodeList = ExtractBarcodeSymbologies(req);
if (barcodeList.Count == 0)
{
return(GenerateErrorMessage(ApiError.InvalidRequest, req));
}
var imageReturn = await GetImageStreamAsync(leadParameterObject.LeadWebRequest.fileUrl, req, DemoConfiguration.MaxUrlMbs);
if (!imageReturn.Successful)
{
return(GenerateErrorMessage(imageReturn.ErrorType.Value, req));
}
using (imageReturn.Stream)
{
LoadDocumentOptions options = new LoadDocumentOptions()
{
FirstPageNumber = leadParameterObject.LeadWebRequest.FirstPage,
LastPageNumber = leadParameterObject.LeadWebRequest.LastPage
};
RecognitionEngine recognitionEngine = new RecognitionEngine();
recognitionEngine.WorkingDirectory = Path.GetTempPath();
BarcodeEngine barcodeEngine = new BarcodeEngine();
var barcodeResults = recognitionEngine.ExtractBarcode(imageReturn.Stream, options, barcodeEngine, barcodeList.ToArray(), 0, true);
List <BarcodeResultData> results = new List <BarcodeResultData>();
foreach (var pageBarcodeData in barcodeResults)
{
foreach (var d in pageBarcodeData.BarcodeData)
{
if (d != null && d.Value != null)
{
var rect = new Rectangle(d.Bounds.X, d.Bounds.Y, d.Bounds.Width, d.Bounds.Height);
results.Add(new BarcodeResultData(pageBarcodeData.PageNumber, d.Symbology.ToString(), d.Value, rect, d.RotationAngle));
}
}
}
var returnRequest = req.CreateResponse(HttpStatusCode.OK);
returnRequest.Content = new StringContent(JsonConvert.SerializeObject(results));
return(returnRequest);
}
}
catch (Exception ex)
{
log.Error($"API Error occurred for request: {context.InvocationId} \n Details: {JsonConvert.SerializeObject(ex)}");
return(GenerateErrorMessage(ApiError.InternalServerError, req));
}
}
private async Task <HttpResponseMessage> ExtractBarcodes([FromUri] BarcodeWebRequest request, int barcodeAmount)
{
try
{
AuthenticateRequest();
if (!VerifyCommonParameters(request))
{
throw new MalformedRequestException();
}
var symbologyList = new List <BarcodeSymbology>();
if (string.IsNullOrEmpty(request.symbologies))//If no symbology string is passed, default to all symbologies.
{
symbologyList = Enum.GetValues(typeof(BarcodeSymbology)).OfType <BarcodeSymbology>().ToList();
symbologyList.Remove(BarcodeSymbology.Unknown);
}
else
{
symbologyList = ExtractBarcodeSymbologies(request.symbologies);
//If the user did supply a list of symbologies, but they could not be parsed, we will deny the request.
if (symbologyList.Count == 0)
{
throw new MalformedRequestException();
}
}
using (var stream = await GetImageStream(request.fileUrl))
{
int lastPage = request.LastPage;
ValidateFile(stream, ref lastPage);
ConversionEngine conversion = new ConversionEngine();
LoadDocumentOptions options = new LoadDocumentOptions()
{
FirstPageNumber = request.FirstPage,
LastPageNumber = lastPage
};
RecognitionEngine recognitionEngine = new RecognitionEngine();
BarcodeEngine barcodeEngine = new BarcodeEngine();
var barcodeList = recognitionEngine.ExtractBarcode(stream, options, barcodeEngine, symbologyList.ToArray(), barcodeAmount, false);
List <BarcodeResultData> results = new List <BarcodeResultData>();
foreach (var obj in barcodeList)
{
foreach (var d in obj.BarcodeData)
{
var result = new BarcodeResultData(obj.PageNumber, d.Symbology.ToString(), d.Value, new Rectangle(d.Bounds.X, d.Bounds.Y, d.Bounds.Width, d.Bounds.Height), d.RotationAngle);;
results.Add(result);
}
}
return(new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new StringContent(JsonConvert.SerializeObject(results))
});
}
}
catch (Exception e)
{
return(GenerateExceptionMessage(e));
}
}