public async Task <IActionResult> TileImage([FromForm] ImageTileDTO imageTileDTO)
{
try
{
var sw = new Stopwatch();
sw.Start();
var timestamps = new TimestampDTO();
if (imageTileDTO.Image.Length <= 0)
{
return(BadRequest());
}
using var memStream = new MemoryStream();
await imageTileDTO.Image.CopyToAsync(memStream);
timestamps.t1 = sw.ElapsedMilliseconds;
using var image = new Bitmap(memStream);
timestamps.t2 = sw.ElapsedMilliseconds;
int halfWidth = image.Width / 2;
int halfHeight = image.Height / 2;
var resized = new Bitmap(halfWidth, halfHeight);
using var graphics = Graphics.FromImage(resized);
timestamps.t3 = sw.ElapsedMilliseconds;
graphics.CompositingQuality = CompositingQuality.HighSpeed;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.CompositingMode = CompositingMode.SourceCopy;
graphics.DrawImage(image, 0, 0, halfWidth, halfHeight);
graphics.DrawImage(image, halfWidth, halfHeight, image.Width, image.Height);
graphics.DrawImage(image, 0, halfHeight, halfWidth, image.Height);
graphics.DrawImage(image, halfWidth, 0, image.Width, halfHeight);
timestamps.t4 = sw.ElapsedMilliseconds;
using var outStream = new MemoryStream();
resized.Save(outStream, ImageFormat.Jpeg);
timestamps.t5 = sw.ElapsedMilliseconds;
sw.Stop();
_timestamps.AddTileTimestamps(timestamps);
return(new FileContentResult(outStream.ToArray(), "image/jpeg"));
}
catch (Exception ex)
{
Console.WriteLine($"{ex}");
return(StatusCode(StatusCodes.Status500InternalServerError));
}
}
public void AddResizeTimestamps(TimestampDTO timestamps)
{
_resizeImageTimestamp.Add(timestamps);
}
public void AddTileTimestamps(TimestampDTO timestamps)
{
_tileImageTimestamp.Add(timestamps);
}
