[Из песочницы] Удаленное управление VLC player’ом при помощи Arduino и Python

import getpass
import time 
import subprocess
import requests
import serial
import sys
import lxml.etree as etree

class vlc_remote_contol:
    def __init__(self,hst,blist,pname):
        self.host = hst
        self.btn_list = blist
        self.port = serial.Serial(pname, 9600, timeout = 0)
        self.__sess = requests.Session()
        self.__sess.auth = ('',getpass.getpass())
        self.old_vol = self.__get_param(self.__sess.get(self.host+'/requests/status.xml').text, 'volume')
        self.curr_vol = 0
        
    def  __get_param(self,info,param):
        beg = info.find('<'+param+'>')+len('<'+param+'>')
        end = info.find('</'+param+'>')
        return int(info[beg:end])
        
    def  __command (self,host,comm,val):
        if (val == ''):
            req = self.__sess.get(host+'/requests/status.xml'+'?'+'command='+comm)
        else:
            req = self.__sess.get(host+'/requests/status.xml'+'?'+'command='+comm+'&val='+val)
        req.close()
        
    def  __switch_button(self,btn_code):
        if (btn_code == 'FFC23D'):   ## play/pause
            self.__command(self.host,'pl_pause','')
        elif (btn_code == 'FF906F'): ## fullscreen
            self.__command(self.host,'fullscreen','')
        elif (btn_code == 'FFE01F'): ## volume down
            self.__command(self.host,'volume','-10')
        elif (btn_code == 'FFA857'): ## volume up
            self.__command(self.host,'volume','+10')
        elif (btn_code == 'FF22DD'): ## rewind back
            self.__command(self.host,'seek','-0.5%')
        elif (btn_code == 'FF02FD'): ## rewind forward
            self.__command(self.host,'seek','+0.5%')
        elif (btn_code == 'FFA25D'): ## previous track
            self.__command(self.host,'pl_previous','')
        elif (btn_code == 'FFE21D'): ## previous next
            self.__command(self.host,'pl_next','')
        elif (btn_code == 'FF6897'): ## mute
            self.cur_vol = self.__get_param(self.__sess.get(self.host+'/requests/status.xml').text, 'volume')
            if (self.cur_vol  == 0):
                self.__command(self.host,'volume',str(self.old_vol))
            else:
                self.old_vol = self.cur_vol
                self.__command(self.host,'volume','0')
        else:
            pass

    def control(self):
        print('Success')
        while True:
            res = self.port.readline().strip().decode("UTF-8")
            if (res in self.btn_list):
                self.__switch_button(res)
        
def main():
    conf = etree.parse('conf.xml')
    vpath = conf.xpath('/document/vpath/text()')[0]
    vhost = conf.xpath('/document/vhost/text()')[0]
    try:
        subprocess.Popen([vpath])
    except:
        input('VLC player not found')
        return 
    try:
        buttons0 = ['FFA25D','FF629D','FFE21D','FF22DD','FF02FD','FFC23D','FFE01F','FFA857','FF906F','FF6897',
                'FF9867','FFB04F','FF30CF', 'FF18E7','FF7A85','FF10EF','FF38C7','FF5AA5','FF42BD','FF4AB5', 'FF52AD']
        vrc = vlc_remote_contol(vhost,buttons0,"COM3") 
        vrc.control()
    except:
        input("Connection or authorization error.")
        return

if  __name__ ==  "__main__" : 
    main()

This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at http://ift.tt/jcXqJW.