beepz

#!/usr/bin/env python3
"""
Usage: beepz [-q] [REASON]
Make a series of (pseudo-) random beeps based on REASON, then say REASON using TTS if TTS is available.
"""
import math, random, struct, subprocess,sys
import os.path
import hashlib

rate = 48000 # Hz
vol = 0.2 # As a percentage

def randExp(low, high):
    return int(math.exp(random.random()*math.log(1.*high/low))*low)

def randbeep():
    ms = randExp(200,600)
    freq = randExp(220, 900)
    samples = ms * rate // 1000
    r = [math.sin(t*freq/rate*math.pi) for t in range(samples)]
    for x in range(100):
        r[x] *= (x/100)
        r[-x] *= (x/100)
    return r
def silence(ms):
    samples = ms * rate // 1000
    return [0]*samples

def randbeeps():
    out = randbeep()
    num_beeps = random.randrange(2,5)
    for x in range(num_beeps-1):
        out += silence(500) + randbeep()
    return out

def play_samples(s):
    if os.path.exists("/bin/paplay"):
        command = ['paplay', '--raw', "--channels", "1", "--rate", "48000", "--format", "s16le"] 
    else:
        command = ['aplay', '-r', '48000', '-f', 's16']

    p = subprocess.Popen(command, stdin=subprocess.PIPE, stderr=subprocess.DEVNULL)
    bytes_ = struct.pack(f"<{str(len(s))}h", *[int(32000 * x * vol) for x in s])
    p.stdin.write(bytes_)
    p.stdin.close()
    p.wait()

def say(text):
    if not os.path.exists("/bin/speak"): return
    subprocess.check_output(['speak', '-v', 'english-mb-en1', text])

if __name__ == "__main__":
    args = [x for x in sys.argv[1:] if x.startswith("-")]
    seed = ''.join(x for x in sys.argv[1:] if not x.startswith("-"))
    h = hashlib.sha1(seed.encode('utf8')).digest()
    random.seed(h[0]+h[1]*256+h[1]*256**2)
    play_samples(randbeeps())
    if seed and "-q" not in args: say(seed)