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# -*- coding: utf-8 -*-
# Copyright © 2013 Gerd Kohlberger <lowfi@chello.at>
# Copyright © 2013, 2016 marmuta <marmvta@gmail.com>
#
# This file is part of Onboard.
#
# Onboard 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.
#
# Onboard 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 this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import division, print_function, unicode_literals
from Onboard.utils import unicode_str
import Onboard.osk as osk
import logging
_logger = logging.getLogger(__name__)
class Sound(object):
"""
Sound singleton.
Wrapper for osk.Audio.
"""
""" Event id for key feedback """
key_feedback = "onboard-key-feedback"
def __new__(cls, *args, **kwargs):
"""
Singleton magic.
"""
if not hasattr(cls, "self"):
cls.self = object.__new__(cls, *args, **kwargs)
cls.self.construct()
return cls.self
def __init__(self):
"""
Called multiple times, do not use.
"""
pass
def construct(self):
self._osk_audio = None
try:
self._osk_audio = osk.Audio()
except Exception as ex:
_logger.warning("Failed to create osk.Audio: " + unicode_str(ex))
self.enable()
self.cache_sample(self.key_feedback)
def is_valid(self):
""" Check initialization of the audio backend """
return self._osk_audio is not None
def play(self, event_id, x, y, xs, ys):
""" Play a sound """
try:
if self.is_valid():
self._osk_audio.play(event_id, x, y, xs, ys)
except Exception as ex:
_logger.warning("Failed to play sound: " + unicode_str(ex))
def cancel(self):
""" Cancel all playing sounds """
try:
if self.is_valid():
self._osk_audio.cancel()
except Exception as ex:
_logger.warning("Failed to cancel sound: " + unicode_str(ex))
def set_theme(self, name):
""" Set the XDG sound theme """
try:
if self.is_valid():
self._osk_audio.set_theme(name)
except Exception as ex:
_logger.warning("Failed to set sound theme: " + unicode_str(ex))
def enable(self):
""" Enable canberra audio output """
try:
if self.is_valid():
self._osk_audio.enable()
except Exception as ex:
_logger.warning("Failed to enable audio: " + unicode_str(ex))
def disable(self):
""" Disable canberra audio output """
try:
if self.is_valid():
self._osk_audio.disable()
except Exception as ex:
_logger.warning("Failed to disable audio: " + unicode_str(ex))
def cache_sample(self, event_id):
""" Upload sample to the sound server. Blocking call. """
try:
if self.is_valid():
self._osk_audio.cache_sample(event_id)
except Exception as ex:
_logger.warning("Failed to cache sample: " + unicode_str(ex))
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