#!/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