tv_controller.py

   1 #!/usr/bin/python
   2
   3 import os
   4 import string
   5 import signal
   6 import alsaaudio
   7
   8 class MplayerController:
   9
  10         def __init__(self):
  11                 self.vars = "XAUTHORITY=/home/honza801/.Xauthority DISPLAY=:0.0"
  12
  13         def is_running(self):
  14                 process = os.popen('pgrep mplayer').readline()
  15                 if process != "":
  16                         return int(string.strip(process))
  17                 return -1
  18
  19         def getchannels(self):
  20                 process = os.popen('tv lschan').readline()
  21                 if process != "":
  22                         channels = map(string.strip, process.split(","))
  23                         return channels
  24                 return -1
  25
  26         def kill(self):
  27                 pid = self.is_running()
  28                 if pid < 0:
  29                         print "PID < 0"
  30                         return
  31                 else:
  32                         print "Sending SIGTERM to", pid
  33                         os.kill(pid,signal.SIGTERM)
  34
  35         def play(self, channel):
  36                 pid = self.is_running()
  37                 if pid > 0:
  38                         print "Another mplayer is running with pid", pid
  39                         return
  40                 else:
  41                         ret = os.system(self.vars+" tv "+channel+" >/dev/null 2>&1 &")
  42                         print ret
  43
  44
  45 class VolumeController:
  46
  47         def __init__(self, mixdevice='Master'):
  48                 self.mixdevice = alsaaudio.Mixer(mixdevice)
  49
  50         def getvolume(self):
  51                 return self.mixdevice.getvolume()
  52
  53         def volup(self):
  54                 newvol = self.mixdevice.getvolume()+10
  55                 if newvol > 100:
  56                         newvol = 100
  57                 self.mixdevice.setvolume(newvol)
  58
  59         def voldown(self):
  60                 newvol = self.mixdevice.getvolume()-10
  61                 if newvol < 0:
  62                         newvol = 0
  63                 self.mixdevice.setvolume(newvol)
  64
  65
  66 if __name__ == "__main__":
  67         mpc = MplayerController()
  68         mpc.play("ct1")
  69