Assistance Modifying Code

[chuco61]

my question here

I have these two script working perfectly on my Raspberry pi and Arduino respectively.

I am trying to add in two features to the code at this point.

1. Add a skip button that is tied to the Arduino and skips through the songs in the queue of the py code
   
2. Add a "play series of mp3 clips while the RPI is in an idle or inactive state
   

Where would be the first place to look to get this going, can someone possible help me code this?



Thank you!

#!/usr/bin/env python



import glob

import json

import os

import random

import select

import serial

import socket

import subprocess

import sys

import time

import traceback



SERIAL = (glob.glob('/dev/ttyUSB*') + glob.glob('/dev/ttyACM*') + [''])[0]

PORT = 55555



LETTERS = "ABCDEFGHJKLMNPQRSTUV"

NUMBERS = range(1,9)



CONFIG = '/var/jukebox/config.json'



DevNull = open('/dev/null','rw')



config = {}



def readConfig():

global config

config = {

'dup': False,

'rpt': False,

'rnd': False,

'lim': 0,

}

try:

conf = json.loads(open(CONFIG).read())

for k,v in config.items():

config[k] = type(v)(conf[k])

except:

pass



readConfig()



try:

ser = serial.Serial(SERIAL)

ser.setBaudrate(9600)

except:

ser = None

traceback.print_exc()



Q = []



p = None

filename = None



def play(filename):

p = subprocess.Popen(('play', filename),

stdout = DevNull,

stdin = DevNull,

stderr = DevNull)



return p



def playGlob(filenameGlob):

filenames = glob.glob(filenameGlob)

if (len(filenames) == 1):

filename = filenames[0]

return (filename, play(filename))

return None



class AtomicFile(object):

def __init__(self, filename, mode = 'w'):

self.filename = filename

self.new = filename + ".new"

self.w = open(self.new, mode)



def __enter__(self, *extra):

#print(extra)

return self.w



def __exit__(self, *extra):

#print(extra)

self.w.close()

os.rename(self.new, self.filename)



def process(data, address):

global p

global Q





if not data: return



print(data, address)



if (data == 'Stop'):

if p:

p.kill()

return



if (data == 'Flush'):

Q = []

return



if (data == 'Shutdown'):

os.system("sudo /sbin/poweroff")

return



if (data == 'Play'):

return

try:

data = data.split()

if (len(data) != 2): return

(letter, number) = data

assert(letter in LETTERS)

number = int(number)

assert(number in NUMBERS)

Q.append((letter, number, time.time(), address))

except:

traceback.print_exc()



def dump(data):

with AtomicFile('/dev/shm/jukebox.json') as w:

w.write(json.dumps(data, indent=4, sort_keys=1))





# Create a UDP/IP socket

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)



# Bind the socket to the port

sock.bind(('0.0.0.0', PORT))



if ser:

rs = (sock, ser)

else:

rs = (sock,)



while True:

readConfig()

print(config)

if config['lim']:

Q = Q[:config['lim']]



if config['rnd']:

random.shuffle(Q)



(r,w,x) = select.select(rs,(),(),1)



try:

if sock in r:

(data, address) = sock.recvfrom(4096)

process(data, address)

elif ser in r:

try:

data = ser.readline().strip()

except:

rs = (sock,)

process(data, SERIAL)

except:

pass



if p:

if p.poll() is not None:

print(p.wait())

p = None

filename = None

else:

print(filename)

if Q:

if p:

print(Q)

else:

(letter, number, epoch, address) = Q.pop(0)

if config['rpt']:

Q.append((letter, number, epoch, address))

if not config['dup']:

while Q:

(l, n, e, a) = Q[0]

if (l == letter) and (n == number):

Q.pop(0)

else:

break

p = playGlob("/var/jukebox/%s/%d/*" % (letter, number))

if p:

(filename, p) = p

elif p:

print(filename)

else:

print('.')



dump({'current': filename,

'length' : len(Q),

'queue' : Q,

})