Function cdtext_get 

pub unsafe extern "C" fn cdtext_get(
    p_cdtext: *const cdtext_t,
    key: cdtext_field_t,
    track: track_t,
) -> *mut c_char

Returns a copy of the return value of cdtext_get_const or NULL.

Must be freed using cdio_free() when done. @see cdtext_get_const