pub unsafe extern "C" fn av_expr_parse(
expr: *mut *mut AVExpr,
s: *const c_char,
const_names: *const *const c_char,
func1_names: *const *const c_char,
funcs1: *const Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: f64) -> f64>,
func2_names: *const *const c_char,
funcs2: *const Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: f64, arg3: f64) -> f64>,
log_offset: c_int,
log_ctx: *mut c_void,
) -> c_int