Function rp_sys::rp_AcqGetDataPosRaw

pub unsafe extern fn rp_AcqGetDataPosRaw(channel: rp_channel_t,
                                         start_pos: uint32_t,
                                         end_pos: uint32_t,
                                         buffer: *mut int16_t,
                                         buffer_size: *mut uint32_t)
                                         -> c_int