Why did you choose libwebp

[a-little-cat]

I read the code about file input and save.
And I found that libwebp is used to read and write png, jpeg, webp file.
I am wondering why did you choose libwebp instead of opencv?
Maybe opencv can handle this questions with more simple code.

[mirh]

https://github.com/nihui/realsr-ncnn-vulkan/blob/20210210/src/main.cpp#L215
You seem to have found wrong, because libwebp is just the the first loader that is tried on read.
If it fails (because webp_load should do what it's written on the tin) everything else is still expectably handled with WIC/stbi.

If any I find it strange that there are some pointless/duplicated #if _WIN32 conditionals
https://github.com/nihui/realsr-ncnn-vulkan/blob/20210210/src/webp_image.h