in_stream.py 文件源码

def total_samp_per_chan_acquired(self):
        """
        long: Indicates the total number of samples acquired by each
            channel. NI-DAQmx returns a single value because this value
            is the same for all channels. For retriggered acquisitions,
            this value is the cumulative number of samples across all
            retriggered acquisitions.
        """
        val = ctypes.c_ulonglong()

        cfunc = lib_importer.windll.DAQmxGetReadTotalSampPerChanAcquired
        if cfunc.argtypes is None:
            with cfunc.arglock:
                if cfunc.argtypes is None:
                    cfunc.argtypes = [
                        lib_importer.task_handle,
                        ctypes.POINTER(ctypes.c_ulonglong)]

        error_code = cfunc(
            self._handle, ctypes.byref(val))
        check_for_error(error_code)

        return val.value