Example #1
0
def test_random():
    r = random.Random(0)
    x = bytearray(r.randrange(0, 256) for i in range(16 * 1024))
    y = ecc.encode(x)
    x_ = concat(ecc.decode(y))
    assert x_[: len(x)] == x
    assert all(v == 0 for v in x_[len(x) :])
Example #2
0
def main(args):
    import ecc
    log.info('Running MODEM @ {:.1f} kbps'.format(modem.modem_bps / 1e3))

    fd = sys.stdout

    # padding audio with silence
    writer.write(fd, np.zeros(int(config.Fs * args.silence_start)))

    start(fd, sym.carrier[config.carrier_index])
    for c in sym.carrier:
        training(fd, c)
    training_size = writer.offset
    log.info('%.3f seconds of training audio',
             training_size / wave.bytes_per_second)

    reader = Reader(sys.stdin, 64 << 10)
    data = itertools.chain.from_iterable(reader)
    encoded = itertools.chain.from_iterable(ecc.encode(data))
    modulate(fd, bits=common.to_bits(encoded))

    data_size = writer.offset - training_size
    log.info('%.3f seconds of data audio, for %.3f kB of data',
             data_size / wave.bytes_per_second, reader.total / 1e3)

    # padding audio with silence
    writer.write(fd, np.zeros(int(config.Fs * args.silence_stop)))
Example #3
0
def test_file():
    data = open("data.send").read()
    enc = ecc.encode(data)
    assert concat(ecc.decode(enc)) == data