Function mlt_sys::mlt_frame_get_image

pub unsafe extern "C" fn mlt_frame_get_image(
    self_: mlt_frame, 
    buffer: *mut *mut u8, 
    format: *mut mlt_image_format, 
    width: *mut c_int, 
    height: *mut c_int, 
    writable: c_int
) -> c_int