public async Task Run(
[BlobTrigger("photos/{name}", Connection = "face_blob")] Stream inputBlob,
string name,
[Blob("thumb/{name}", FileAccess.Write)] Stream outBlob,
ILogger log)
{
log.LogInformation("C# Blob trigger function Processed blob Name {name} and Size of {size} Bytes", name, inputBlob.Length);
using (MemoryStream memStream = new MemoryStream())
{
await inputBlob.CopyToAsync(memStream, 1024);
inputBlob.Seek(0, SeekOrigin.Begin);
memStream.Seek(0, SeekOrigin.Begin);
log.LogInformation("Calling face detection api");
var result = await _faceApp.DetectFaceExtract(memStream);
using (var image = Image.FromStream(inputBlob))
{
Graphics graph = Graphics.FromImage(image);
Pen pen = new Pen(Brushes.Red, 1.7f);
graph.DrawRectangle(pen, new Rectangle(result.Left, result.Top, result.Width, result.Height));
_logger.LogInformation("found face like left {left} top {top} width {width} and height {height}",
result.Left,
result.Top,
result.Width,
result.Height);
using (MemoryStream stream = new MemoryStream())
{
FileInfo fInfo = new FileInfo(name);
switch (fInfo.Extension)
{
case "png":
case ".png":
image.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
break;
default:
image.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
break;
}
stream.Seek(0, SeekOrigin.Begin);
await stream.CopyToAsync(outBlob);
}
}
}
}
public async Task <HttpResponseMessage> Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = null)] HttpRequestMessage req,
ILogger log)
{
log.LogInformation("C# HTTP trigger function processed a request.");
string requestBody = await req.Content.ReadAsStringAsync();
dynamic data = JsonConvert.DeserializeObject(requestBody);
string baseUri = data?.baseUri;
var result = await _faceApp.DetectFaceExtract(baseUri);
return(new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new StringContent(JsonConvert.SerializeObject(result), Encoding.UTF8, "application/json")
});
}
public async Task Run(
[BlobTrigger("photos/{name}", Connection = "face_blob")] Stream inputBlob,
string name,
ILogger log)
{
log.LogInformation($"C# Blob trigger function Processed blob\n Name:{name} \n Size: {inputBlob.Length} Bytes");
log.LogInformation("Calling face detection api");
using (MemoryStream memStream = new MemoryStream())
{
await inputBlob.CopyToAsync(memStream, 1024);
inputBlob.Seek(0, SeekOrigin.Begin);
memStream.Seek(0, SeekOrigin.Begin);
var result = await _faceApp.DetectFaceExtract(memStream);
using (var image = Image.FromStream(inputBlob))
{
Graphics graph = Graphics.FromImage(image);
graph.Clear(Color.Azure);
Pen pen = new Pen(Brushes.Black);
graph.DrawLines(pen, new Point[] { new Point(result.Left, result.Top), new Point(result.Left + result.Width, result.Top + result.Height) });
Rectangle rect = new Rectangle(100, 100, 300, 300);
graph.DrawRectangle(pen, rect);
using (MemoryStream memStreamThumb = new MemoryStream())
{
image.Save(memStreamThumb, System.Drawing.Imaging.ImageFormat.Png);
memStreamThumb.Seek(0, SeekOrigin.Begin);
await CreateBlockBlobAsync(name, memStreamThumb);
}
}
}
}