Rotation on image from CameraView

Question

How can I rotate the image (is byte[]) captured by CamerView (Xamarin Community Toolkit) since rotation doesn't have a setter?

Answer 1

Hello,

I faced exactly the same issue.

Is there any solution for this out there?

Thanks.
Sebastian.

Answer 2

Answer 3

Answer 4

Answer 5

And using SkiaSharp when I convert SKBitmap back to bytes[] has not undergone any rotation. But I need a byte[].

@Andrea Farina Try to get the stream for the ImageSource and then use SKBitmap.Decode(stream) command to generate a SKBitmap iobject.

Here is the related code, you could refer to it:

   private void CameraView_MediaCaptured(object sender, Xamarin.CommunityToolkit.UI.Views.MediaCapturedEventArgs e)  
   {  
       StreamImageSource streamImageSource = (StreamImageSource)e.Image;  
       System.Threading.CancellationToken cancellationToken = System.Threading.CancellationToken.None;  
       Task<Stream> task = streamImageSource.Stream(cancellationToken);  
       Stream stream = task.Result;  
     
       SKBitmap photo = RotateBitmap(SKBitmap.Decode(stream));  
       img.Source = ImageSource.FromStream(() => SKImage.FromBitmap(photo).Encode().AsStream());  
   }  
     
   SKBitmap RotateBitmap(SKBitmap bitmap)  
   {  
       SKBitmap rotatedBitmap = new SKBitmap(bitmap.Height, bitmap.Width);  
       using (var surface = new SKCanvas(rotatedBitmap))  
       {  
           surface.Translate(rotatedBitmap.Width, 0);  
           surface.RotateDegrees(90);  
           surface.DrawBitmap(bitmap, 0, 0);  
       }  
       return rotatedBitmap;  
   }