Detect alpha on jpeg

[mothsART]

I read #2211 and I think this issue is slightly diff.

Image-rs doesn't detect when an jpeg image is rgb8 or rgba8.

With the software The Gimp, I have opened a jpeg file without alpha channel :

Secondly, I have created a other jpeg file with an alpha channel :

Expected

On the 2 pictures, img.color() give me Rgba8 and img.color().has_alpha() is true.

What behaviour should have happened

I think, first picture will give me Rgb8 and alpha on false.
The second picture will give me Rgba8 and alpha on true.

[fintelia]

The JPEG file format cannot store alpha so I'd expect neither one to be Rgba8. Could you share the code you are using to load the images?

[mothsART]

When I read the code from my projet, I realize than I used an intermediate buffer with rgba.
Sorry.