basisu_c_sys 0.4.2

# Raw Rust binding for the Basis Universal pure C API.

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Raw Rust binding for the basisu pure C API, through FFI on native and wasm-bindgen on web. See also https://github.com/BinomialLLC/basis_universal/wiki#encoder-and-transcoding-c-api-documentation. This is used by [bevy_basisu_loader](../bevy_basisu_loader/) and [bevy_basisu_saver](../bevy_basisu_saver/).

Note that BC1, PVRTC1, ATC, FXT1, PVRTC2 are not compiled to reduce size as they are rarely used.

This supports `wasm32-unknown-unknown` by embedding prebuilt basisu wasm binary and `wasm-bindgen`. You need to call `instantiate_embedded_basisu_wasm` before calling other functions if running on web. The prebuilt wasm was prebuilt through:
```sh
cargo r -p basisu_c_sys --bin build-wasm-cli --features __build_wasm_cli -- --emcc-flags="-Os -msimd128 -flto=full -sEVAL_CTORS" --wasm-opt-flags="-Os --enable-simd --enable-bulk-memory-opt --enable-nontrapping-float-to-int"
```

Feature flags:
- `encoder`: Enable basisu encoder. By default only transcoder is enabled.
- `serde`: Enable serde on structs.