/usr/share/pyshared/libopensesame/sampler.py is in opensesame 0.27.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | #-*- coding:utf-8 -*-
"""
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 item, exceptions, generic_response, debug
import openexp.sampler
class sampler(item.item, generic_response.generic_response):
"""Sound playback item"""
description = u'Plays a sound file in .wav or .ogg format'
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.sample = u''
self.pan = 0
self.pitch = 1
self.fade_in = 0
self.volume = 1.0
self.stop_after = 0
self.duration = u'sound'
self.block = False
item.item.__init__(self, name, experiment, string)
def prepare_duration_sound(self):
"""Sets the duration function for 'sound' duration."""
self.block = True
self._duration_func = self.dummy
def prepare(self):
"""Prepares for playback."""
item.item.prepare(self)
if self.sample.strip() == u'':
raise exceptions.runtime_error( \
u'No sample has been specified in sampler "%s"' % self.name)
sample = self.experiment.get_file(self.eval_text(self.sample))
if debug.enabled:
self.sampler = openexp.sampler.sampler(self.experiment, sample)
else:
try:
self.sampler = openexp.sampler.sampler(self.experiment, sample)
except Exception as e:
raise exceptions.runtime_error( \
u'Failed to load sample in sampler "%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'))
self.sampler.pitch(self.get(u'pitch'))
self.sampler.fade_in(self.get(u'fade_in'))
self.sampler.stop_after(self.get(u'stop_after'))
generic_response.generic_response.prepare(self)
def run(self):
"""Plays the sample."""
self.set_item_onset(self.time())
self.set_sri()
self.sampler.play(self.block)
self.process_response()
def var_info(self):
"""
Give a list of dictionaries with variable descriptions
Returns:
A list of (name, description) tuples
"""
return item.item.var_info(self) + \
generic_response.generic_response.var_info(self)
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