Source code for models.FrameQueue

#
# TI Voxel Viewer component.
#
# Copyright (c) 2014 Texas Instruments Inc.
#

from DataQueue import DataQueue
from collections import deque

class FrameQueue(DataQueue):

  def __init__(self, maxlen = 3):
    super(FrameQueue, self).__init__(maxlen)
    self.availableQueue = deque(maxlen = maxlen)

  def _put(self, item):
    if len(self.availableQueue) == 0:
      self.queue.append(item.copy())
    else:
      it = self.availableQueue.popleft()
      item.copyTo(it)
      self.queue.append(it)
    
  def release(self, item):
    self.condition.acquire()
    self.availableQueue.append(item)
    self.condition.release()