#!/usr/bin/env python

 __author__ = "Gustavo Sverzut Barbieri / Artur Duque de Souza"

 __author_email__ = "barbieri@gmail.com / artur.souza@indt.org.br"

 __license__ = "GPL"

 __version__ = "0.4"

 __all__ = ("Transcoder")

 class Transcoder(object):

     """Transcoder's Class: parent class to implement

     a plugin for transcoding data."""

     priority = 0   # negative values have higher priorities

     name = None # to be used in requests

     status = None

     log = None

     tid = -1

     def __init__(self, params):

         self.params = params

     # __init__()

     def params_first(self, key, default=None):

         if default is None:

             return self.params[key][0]

         else:

             try:

                 return self.params[key][0]

             except:

                 return default

     # params_first()

     def get_mimetype(self):

         return "application/octet-stream"

     # get_mimetype()

     def start(self, outfile):

         pass

     # start()

     def stop(self):

         pass

     # stop()

     def get_length (self):

         pass

     # get_leght ()

     def get_progress (self):

         pass

     # get_progress ()

     def __str__(self):

         return '%s: %s( params=%s ) - Status: %s%%' % \

                (self.__class__.__name__, self.tid,

                 self.params, self.status)

     # __str__()

 # Transcoder