/usr/lib/python2.7/dist-packages/libopensesame/synth.py is in opensesame 0.27.4-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""
This file is part of OpenSesame.
OpenSesame 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.
OpenSesame 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 OpenSesame. If not, see <http://www.gnu.org/licenses/>.
"""
from libopensesame import sampler, exceptions, item, generic_response
import openexp.synth
class synth(sampler.sampler, item.item):
"""Plays a synthesized sound"""
description = u'A basic sound synthesizer'
def __init__(self, name, experiment, string = None):
"""
Constructor.
Arguments:
name -- The name of the item.
experiment -- The experiment.
Keyword arguments:
string -- The item definition string. (default=None)
"""
self.item_type = u'synth'
self.freq = 440
self.length = 100
self.osc = u'sine'
self.pan = 0
self.attack = 0
self.decay = 5
self.volume = 1.0
self.duration = u'sound'
self.block = False
item.item.__init__(self, name, experiment, string)
def prepare(self):
"""Prepares for playback."""
item.item.prepare(self)
try:
self.sampler = openexp.synth.synth(self.experiment, \
self.get(u'osc'), self.get(u'freq'), self.get(u'length'), \
self.get(u'attack'), self.get(u'decay'))
except Exception as e:
raise exceptions.runtime_error( \
u"Failed to generate sound in synth '%s': %s" % (self.name, e))
pan = self.get(u'pan')
if pan == -20:
pan = u'left'
elif pan == 20:
pan = u'right'
self.sampler.pan(pan)
self.sampler.volume(self.get(u'volume'))
generic_response.generic_response.prepare(self)
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