Function libktx_rs_sys::ktxTexture1_CreateFromStdioStream

pub unsafe extern "C" fn ktxTexture1_CreateFromStdioStream(
    stdioStream: *mut FILE, 
    createFlags: ktxTextureCreateFlags, 
    newTex: *mut *mut ktxTexture1
) -> ktx_error_code_e

These four create a ktxTexture1 provided the data is in KTX format.