#!/usr/bin/python3
#
# Copyright 2004,2007,2013 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#

from gnuradio import gr
from gnuradio import audio
from gnuradio import blocks
from gnuradio.eng_arg import eng_float
from argparse import ArgumentParser


class my_top_block(gr.top_block):

    def __init__(self):
        gr.top_block.__init__(self)

        parser = ArgumentParser()
        parser.add_argument("-I", "--audio-input", default="",
                            help="pcm input device name.  E.g., hw:0,0 or /dev/dsp")
        parser.add_argument("-r", "--sample-rate", type=eng_float, default=48000,
                            help="set sample rate to RATE (%(default)r)")
        parser.add_argument("-N", "--nsamples", type=eng_float,
                            help="number of samples to collect [default=+inf]")
        parser.add_argument('file_name', metavar='FILE-NAME',
                            help="Output file path")

        args = parser.parse_args()

        sample_rate = int(args.sample_rate)
        src = audio.source(sample_rate, args.audio_input)
        dst = blocks.file_sink(gr.sizeof_float, args.file_name)

        if args.nsamples is None:
            self.connect((src, 0), dst)
        else:
            head = blocks.head(gr.sizeof_float, int(args.nsamples))
            self.connect((src, 0), head, dst)


if __name__ == '__main__':
    try:
        my_top_block().run()
    except KeyboardInterrupt:
        pass
