Function ocl::ffi::clEnqueueReadImage

pub unsafe extern "system" fn clEnqueueReadImage(command_queue: *mut c_void,
                                                 image: *mut c_void,
                                                 blocking_read: u32,
                                                 origin: *const usize,
                                                 region: *const usize,
                                                 row_pitch: usize,
                                                 slc_pitch: usize,
                                                 ptr: *mut c_void,
                                                 num_events_in_wait_list: u32,
                                                 event_wait_list: *const *mut c_void,
                                                 event: *mut *mut c_void)
                                                 -> i32