lamp_control.py

"""
Installare le dipendenze tramite:
  pip3 install requests audioop pyaudio

ed eseguire:
  python3 lamp_control.py
"""

import requests
import audioop
import pyaudio
import time

from threading import Thread

lamp_state = False
first_clap = False

clap_threshold = 1500
chunk = 2048

window_size = 10

def clap(target_list, target_elem):
    th_count = [element > target_elem for element in target_list].count(True)
    return 1 <= th_count < 4

py = pyaudio.PyAudio()
stream = py.open(format=pyaudio.paInt16,
                channels=1,
                rate=48000,
                input=True,
                frames_per_buffer=chunk)


if __name__ == "__main__":
    window = []
    running = True

    while running:
        try:
            in_data = stream.read(chunk)
            rms_value = audioop.rms(in_data, 2) # paInt16 => data width = 2
            window.append(rms_value)

            if len(window) == window_size:
                print(window, lamp_state, first_clap)
                if not clap(window, clap_threshold):
                    first_clap = False
                    window.clear()
                    continue
                
                if not first_clap:
                    first_clap = True
                    window.clear()
                    continue
                
                lamp_state = not lamp_state
                print("closing" if not lamp_state else "opening")
                Thread(target=requests.post, args=("http://localhost/status", {"open": lamp_state})).start()
                first_clap = False
                window.clear()
        except KeyboardInterrupt:
            running = False
            stream.stop_stream()
            stream.close()