python-DiskPlayer/buttons.py

from gpiozero import Button
from signal import pause
import time
import subprocess
import pathlib

venv_path = f"{pathlib.Path(__file__).parent.resolve()}/venv/bin/python3"
player_path = f"{pathlib.Path(__file__).parent.resolve()}/player.py"

Button.was_held = False


def vol_up(btn):
    btn.was_held = True
    while btn.was_held:
        print("Vol Up")
        result = subprocess.run(
            [f"mpc volume +10"],
            stdout=subprocess.PIPE,
            shell=True,
        ).stdout.decode("utf-8")
        time.sleep(0.3)


def vol_down(btn):
    btn.was_held = True
    while btn.was_held:
        print("Vol Down")
        result = subprocess.run(
            [f"mpc volume -10"],
            stdout=subprocess.PIPE,
            shell=True,
        ).stdout.decode("utf-8")
        time.sleep(0.3)


def mute(btn):
    btn.was_held = True
    while btn.was_held:
        print("Mute")
        result = subprocess.run(
            [f"mpc volume -10"],
            stdout=subprocess.PIPE,
            shell=True,
        ).stdout.decode("utf-8")
        time.sleep(0.3)


def playpause_down(btn):
    btn.was_held = True
    while btn.was_held:
        print("playpause")
        time.sleep(0.3)


def released(btn):
    if not btn.was_held:
        pressed(btn)
    btn.was_held = False


def pressed(btn):
    if btn._pin.number == up_pin:
        print("next")
        result = subprocess.run(
            [f"{venv_path} {player_path} next"],
            stdout=subprocess.PIPE,
            shell=True,
        ).stdout.decode("utf-8")
    elif btn._pin.number == down_pin:
        print("back")
        result = subprocess.run(
            [f"{venv_path} {player_path} previous"],
            stdout=subprocess.PIPE,
            shell=True,
        ).stdout.decode("utf-8")
    elif btn._pin.number == playpause_pin:
        print("playpause")
        result = subprocess.run(
            [f"{venv_path} {player_path} playpause"],
            stdout=subprocess.PIPE,
            shell=True,
        ).stdout.decode("utf-8")
    elif btn._pin.number == shuffle_pin:
        print("shuffle")
        result = subprocess.run(
            [f"{venv_path} {player_path} shuffle"],
            stdout=subprocess.PIPE,
            shell=True,
        ).stdout.decode("utf-8")


up_pin = 24
down_pin = 15
playpause_pin = 14
shuffle_pin = 23

up_btn = Button(up_pin)
down_button = Button(down_pin)
playpause_button = Button(playpause_pin)
shuffle_button = Button(shuffle_pin)

up_btn.when_held = vol_up
up_btn.when_released = released
down_button.when_held = vol_down
down_button.when_released = released
playpause_button.when_held = mute
playpause_button.when_released = released
shuffle_button.when_released = released
pause()