BufferBase.py

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#!/usr/bin/env python
# -*- coding: euc-jp -*-



import OpenRTM_aist


class BufferBase(OpenRTM_aist.BufferStatus):
  """
  """


  
  def init(self, prop):
    pass


  
  def length(self):
    pass


  
  def reset(self):
    pass


  
  def wptr(self, n=0):
    pass


  
  def advanceWptr(self, n = 1):
    pass


  
  def put(self, data):
    pass


  
  def write(self, value, sec=-1, nsec=-1):
    pass


  
  def writable(self):
    pass


  
  def full(self):
    pass


  
  def rptr(self, n = 0):
    pass

  
  def advanceRptr(self, n = 1):
    pass


  
  def get(self):
    pass


  
  def read(self, value, sec = -1, nsec = -1):
    pass


  
  def readable(self):
    pass


  
  def empty(self):
    pass




class NullBuffer(BufferBase):
  """
  """



  
  def __init__(self, size=None):
    self._length = 1
    self._data = None
    self._is_new = False
    self._inited = False


  
  def length(self):
    return 1


  
  def write(self, value, sec=-1, nsec=-1):
    self.put(value)
    return True


  
  def read(self, value):
    if not self._inited:
      return False
    value[0] = self.get()
    return True


  
  def isFull(self):
    return False


  
  def isEmpty(self):
    return False


  
  def isNew(self):
    return self._is_new


  
  def put(self, data):
    self._data = data
    self._is_new = True
    self._inited = True


  
  def get(self):
    self._is_new = False
    return self._data


  
  def getRef(self):
    return self._data