Cannot import JPEG images with sampling factors not supported by jpgd

[TheYellowArchitect]

Godot version

4.0.1

System information

Arch Linux

Issue description

There are certain .jpg images where Godot just cannot import the image. The image is not corrupted, all file editors display it normally. And ofc, an X cross sign appears on the image file in godot's filesystem tab. No preview, nor loading it to some texture or sprite works.

This bug was not created in 4.0.1, I can confirm it was present since 4.0 beta14. I also tested 3.5.1, it exists there too.

Steps to reproduce

1. Open empty project
2. Import this:

Minimal reproduction project

See above.

[jmb462]

Seems that this JPG file use not supported sampling factors causing jpeg_decoder::init_frame() to failed.

File godot\thirdparty\basis_universal\encoder\jpgd.cpp line 2528

m_comp_h_samp = {2, 1, 1, 0} m_comp_v_samp = {2, 1, 2, 0} <= here, only value supported for the index 2 is 1.

Returning JPGD_UNSUPPORTED_SAMP_FACTORS error.

[Calinou]

File godot\thirdparty\basis_universal\encoder\jpgd.cpp line 2528

That JPEG decoder is only used by Basis Universal – I'm not even sure if this code is used in Godot.

https://github.com/godotengine/godot/blob/master/thirdparty/jpeg-compressor/jpgd.cpp is the decoder actually used by Godot, though its code appears nearly identical.

[jmb462]

Following step by step debugger leads me to the Basis Universal file.