Function openexr_sys::CEXR_IStream_from_reader

pub unsafe extern "C" fn CEXR_IStream_from_reader(
    reader: *mut c_void, 
    read_ptr: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: *mut c_char, arg3: c_int, err_out: *mut c_int) -> c_int>, 
    seekp_ptr: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: u64, err_out: *mut c_int) -> c_int>, 
    out: *mut *mut CEXR_IStream, 
    err_out: *mut *const c_char
) -> c_int