Looper.py

   1 import socket, struct
   2 import Actions, Logger
   3
   4 def osc_string(s) :
   5     n = (len(s)+1)%4
   6     if n : return s+'\0'*(5-n)
   7     else : return s+'\0'
   8
   9 def osc_command(url,*args):
  10     tag=","
  11     argstring=""
  12     for arg in args :
  13         if type(arg) is int:
  14             tag += 'i'
  15             argstring += struct.pack(">I",arg)
  16         elif type(arg) is str:
  17             tag += 's'
  18             argstring += osc_string(arg)
  19         else:
  20             raise RunstimeError, "Invalid OSC argument"
  21     return osc_string(url) + osc_string(tag) + argstring
  22
  23 class OSCSender(object):
  24
  25     def __init__(self, host, port):
  26         self._sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
  27         self._target = (host,port)
  28
  29     def command(self, path, *args):
  30         if type(args[0]) in (tuple, list) : args = args[0]
  31         Logger.log('osc','osc://%s:%s%s %s'
  32                    % (self._target[0], self._target[1], path,
  33                       ' '.join(map(repr,args))))
  34         self._sock.sendto(osc_command(path, *args),self._target)
  35
  36
  37 class Controller(object) :
  38
  39     def __init__(self, host, port):
  40         self._sender = OSCSender(host,port)
  41
  42     def hit(self, command, index=0):
  43         self._sender.command("/sl/%d/hit" % index, str(command))
  44
  45
  46 class Command(Actions.Action):
  47
  48     def __init__(self, name, controller, command):
  49         Actions.Action.__init__(self, name)
  50         self._controller = controller
  51         self._command = command
  52
  53     def __call__(self, binding):
  54         self._controller.hit(self._command)