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# -*- coding: utf-8 -*-
#
# This file is part of Linux Show Player
#
# Copyright 2012-2016 Francesco Ceruti <ceppofrancy@gmail.com>
#
# Linux Show Player 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 3 of the License, or
# (at your option) any later version.
#
# Linux Show Player is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Linux Show Player. If not, see <http://www.gnu.org/licenses/>.
from abc import abstractmethod
from lisp.core.singleton import ABCSingleton
class MIDICommon(metaclass=ABCSingleton):
def __init__(self, port_name='AppDefault'):
"""
:param port_name: the port name
The port name can be:
* SysDefault - the system default port
* AppDefault - the app default port defined in the config file
* <port_name> - the port name
"""
self._bakend = None
self._port_name = port_name
self._port = None
def change_port(self, port_name):
self._port_name = port_name
self.close()
self.open()
@abstractmethod
def open(self):
"""Open the port"""
def close(self):
"""Close the port"""
if self._port is not None:
self._port.close()
def is_open(self):
if self._port is not None:
return not self._port.closed
return False
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