'''
SVPlayer player backend objects

(c) 2011-2012 Jan ONDREJ (SAL) <ondrejj(at)salstar.sk>     

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
'''

import time, os
from sgtk import *

### Base (empty) player class ###

def no_action(ret=None):
    def fx(*args, **kw):
        return ret
    return fx

def Debug(cond=None):
    req = os.environ.get("SVPLAYER_DEBUG", "").split(",")
    if cond is not None:
      return cond in req
    return req

class BasePlayerWidget(object):
  name = 'base'
  max_volume = 100
  paused = True
  size = (400, 300)
  state = "Opening"
  audio_tracks = []
  audio_track = 0
  subtitle = 0
  start_time = time.time()
  _language_priority = []
  handle_events = True
  def __init__(self, *args, **kw):
      pass # ignore all arguments
  def get_state(self):
      return self.state
  def get_size(self):
      return self.size
  def was_ended(self):
      return self.state=="Ended"
  def play(self):
      pass
  def stop(self):
      pass
  def pause(self, state=None):
      if state is None:
        self.paused = not self.paused
      else:
        self.paused = state
      if self.paused:
        self.stop()
        self.state = "Paused"
      else:
        self.play()
        self.state = "Playing"
  def print_info(self):
      print "NO INFO!"
  def run_time(self):
      return time.time() - self.start_time
  def get_message(self):
      return None
  def language_priority(self, priority):
      self._language_priority = priority

  # empty functions to simulate no player
  destroy = no_action()
  show = no_action()
  stop = no_action()

  # functions without definition (do nothing)
  set_volume = no_action()
  get_volume = no_action(0)
  get_mute = no_action(False)
  set_mute = no_action()
  toggle_mute = no_action()
  set_track = no_action()
  set_deinterlace = no_action()
  get_crop = no_action(None)
  set_crop = no_action()
  get_aspect = no_action(None)
  set_aspect = no_action()
  add_subtitle = no_action()
  get_tracks = no_action([])
  forward = no_action()
  seek = no_action()
  decode_errors = no_action(0)
  read_bytes = no_action(1)
  set_rate = no_action()

  # subtitle functions
  get_sub = no_action(0)
  sub_list = no_action([])
  next_sub = no_action(False)