No, the C API isn't going to help you. The changes you linked to are only made to the C++ interface, the C interface is just a binding to that.

Looks like bindgen generate binding to C++: https://rust-lang.github.io/rust-bindgen/cpp.html

maybe I can make hpp wrapper and add load_from_data_tg function

Yeah I see basically 3 options:

• try to use bindgen with C++, or the cxx crate to bridge to C++ directly, which is likely going to be very painful
• write some C wrapper ourselves
• try to apply the color replacement as post-processing in Rust

Feel free to try these out and/or suggest other options that I might've missed. The last one might be favourable as it would work with either version of rlottie.

I made first working version

https://github.com/yuraiz/rlottie-rs/tree/fitz-recolor

It looks like this should work with Samsung version of rlottie too (Samsung/rlottie@3be663e), but with a different api.

Telegram's fitzModifier gets replacement colors from json, and recolors skin only when Samsung's colorFilter will be applied to all colors

Color filter can be useful for conversion, but I don't want to use it for skin recolor

I can make feature 'v2' and add color filter later, but 'v2' and 'tg' features will be exclusive

Telegram used to apply skin tone to faces