Adding level scaling tool tests/scale_pcm.py

#!/usr/bin/env python3

import os

import sys

import argparse

THIS_PATH = os.path.join(os.getcwd(), __file__)

sys.path.append(os.path.join(os.path.dirname(THIS_PATH), "../scripts"))

import pyaudio3dtools

import pyivastest

import numpy as np

def scale_pcm(file1, file2, factor = 1.0) -> None:

    """

    Scale file1 to file2

    """

    s1, fs = pyaudio3dtools.audiofile.readfile(file1)

    s2    = s1 * factor; 

    pyaudio3dtools.audiofile.writefile(file2, s2, fs)

if __name__ == "__main__":

    parser = argparse.ArgumentParser()

    parser.add_argument("file1", type=str)

    parser.add_argument("file2", type=str)

    parser.add_argument("factor", type=float)

    args = parser.parse_args()

    scale_pcm(**vars(args))

    sys.exit(0)