[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 ('') 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 ()
