def test_connect(self):
pedalboard = Pedalboard('Pedalboard name')
pedalboard.observer = MagicMock()
builder = MidiOutputTest.builder
cctonode = builder.build(
'http://gareus.org/oss/lv2/midifilter#cctonote')
cctonode2 = builder.build(
'http://gareus.org/oss/lv2/midifilter#cctonote')
pedalboard.append(cctonode)
pedalboard.append(cctonode2)
self.assertEqual(0, len(pedalboard.connections))
pedalboard.connect(cctonode.midi_outputs[0], cctonode2.midi_inputs[0])
self.assertEqual(1, len(pedalboard.connections))
new_connection = pedalboard.connections[0]
pedalboard.observer.on_connection_updated.assert_called_with(
new_connection, UpdateType.CREATED, pedalboard=pedalboard)
pedalboard.connect(cctonode2.midi_outputs[0], cctonode.midi_inputs[0])
self.assertEqual(2, len(pedalboard.connections))
new_connection = pedalboard.connections[-1]
pedalboard.observer.on_connection_updated.assert_called_with(
new_connection, UpdateType.CREATED, pedalboard=pedalboard)
def test_json(self):
bank = Bank('Bank 1')
pedalboard = Pedalboard('Rocksmith')
builder = Lv2EffectBuilder()
system_effect = SystemEffect('system', ('capture_1', 'capture_2'),
('playback_1', 'playback_2'))
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
filter = builder.build('http://calf.sourceforge.net/plugins/Filter')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(filter)
pedalboard.append(reverb2)
pedalboard.connect(system_effect.outputs[0], reverb.inputs[0])
pedalboard.connect(reverb.outputs[0], filter.inputs[0])
pedalboard.connect(reverb.outputs[1], filter.inputs[0])
pedalboard.connect(filter.outputs[0], reverb2.inputs[0])
pedalboard.connect(reverb.outputs[0], reverb2.inputs[0])
pedalboard.connect(reverb.outputs[0], system_effect.inputs[0])
bank.append(pedalboard)
print(json.dumps(bank.json, sort_keys=True, indent=2))
def test_delete_effect_remove_your_connections(self):
pedalboard = Pedalboard('Pedalboard name')
builder = Lv2EffectBuilder()
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
filter = builder.build('http://calf.sourceforge.net/plugins/Filter')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(filter)
pedalboard.append(reverb2)
reverb.outputs[0].connect(filter.inputs[0])
reverb.outputs[1].connect(filter.inputs[0])
filter.outputs[0].connect(reverb2.inputs[0])
reverb.outputs[0].connect(reverb2.inputs[0])
self.assertEqual(4, len(pedalboard.connections))
pedalboard.observer = MagicMock()
fuzz_connections = filter.connections
pedalboard.effects.remove(filter)
self.assertEqual(1, len(pedalboard.connections))
for connection in fuzz_connections:
pedalboard.observer.on_connection_updated.assert_any_call(
connection, UpdateType.DELETED, pedalboard=pedalboard)
def test_set_pedalboard(self):
"""Test only coverage"""
manager = BanksManager()
bank = Bank('Bank 1')
manager.append(bank)
mod_host = ModHost('localhost')
mod_host.host = MagicMock()
manager.register(mod_host)
pedalboard = Pedalboard('test_set_pedalboard_1')
bank.append(pedalboard)
reverb = self.builder.build(
'http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard2 = Pedalboard('test_set_pedalboard_2')
reverb2 = self.builder.build(
'http://calf.sourceforge.net/plugins/Reverb')
bank.append(pedalboard)
pedalboard2.append(reverb2)
mod_host.pedalboard = pedalboard
mod_host.pedalboard = pedalboard2
def test_param_value_not_current_pedalboard(self):
"""Test only coverage"""
manager = BanksManager()
bank = Bank('Bank 1')
manager.append(bank)
mod_host = ModHost('localhost')
mod_host.host = MagicMock()
manager.register(mod_host)
pedalboard = Pedalboard('test_set_pedalboard_1')
pedalboard.append(
self.builder.build('http://calf.sourceforge.net/plugins/Reverb'))
pedalboard2 = Pedalboard('test_set_pedalboard_2')
pedalboard2.append(
self.builder.build('http://calf.sourceforge.net/plugins/Reverb'))
bank.append(pedalboard)
bank.append(pedalboard2)
mod_host.pedalboard = pedalboard
pedalboard2.effects[0].params[0].value = pedalboard2.effects[0].params[
0].maximum
def test_disconnect(self):
pedalboard = Pedalboard('Pedalboard name')
builder = OutputTest.builder
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(reverb2)
pedalboard.connect(reverb.outputs[0], reverb2.inputs[0])
pedalboard.connect(reverb.outputs[1], reverb2.inputs[0])
self.assertEqual(2, len(pedalboard.connections))
pedalboard.observer = MagicMock()
disconnected = pedalboard.connections[-1]
pedalboard.disconnect(reverb.outputs[1], reverb2.inputs[0])
self.assertEqual(1, len(pedalboard.connections))
pedalboard.observer.on_connection_updated.assert_called_with(disconnected, UpdateType.DELETED, pedalboard=pedalboard)
disconnected = pedalboard.connections[-1]
pedalboard.disconnect(reverb.outputs[0], reverb2.inputs[0])
self.assertEqual(0, len(pedalboard.connections))
pedalboard.observer.on_connection_updated.assert_called_with(disconnected, UpdateType.DELETED, pedalboard=pedalboard)
def test_connections_effect_remove_your_connections(self):
pedalboard = Pedalboard('Pedalboard name')
builder = EffectTest.builder
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
filter = builder.build('http://calf.sourceforge.net/plugins/Filter')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(filter)
pedalboard.append(reverb2)
reverb.outputs[0].connect(filter.inputs[0])
reverb.outputs[1].connect(filter.inputs[0])
filter.outputs[0].connect(reverb2.inputs[0])
reverb.outputs[0].connect(reverb2.inputs[0])
reverb_connections = (Connection(reverb.outputs[0], filter.inputs[0]),
Connection(reverb.outputs[1], filter.inputs[0]),
Connection(reverb.outputs[0], reverb2.inputs[0]))
fuzz_connections = (Connection(reverb.outputs[0], filter.inputs[0]),
Connection(reverb.outputs[1], filter.inputs[0]),
Connection(filter.outputs[0], reverb2.inputs[0]))
reverb2_connections = (Connection(filter.outputs[0],
reverb2.inputs[0]),
Connection(reverb.outputs[0],
reverb2.inputs[0]))
self.assertCountEqual(reverb_connections, reverb.connections)
self.assertCountEqual(fuzz_connections, filter.connections)
self.assertCountEqual(reverb2_connections, reverb2.connections)
def test_observers_mock(self):
"""Test only coverage"""
sys_effect = SystemEffect('system', ('capture_1', 'capture_2'),
('playback_1', 'playback_2'))
manager = BanksManager()
bank = Bank('Bank 1')
manager.append(bank)
mod_host = ModHost('localhost')
mod_host.host = MagicMock()
manager.register(mod_host)
pedalboard = Pedalboard('Rocksmith')
mod_host.pedalboard = pedalboard
bank.append(pedalboard)
reverb = self.builder.build(
'http://calf.sourceforge.net/plugins/Reverb')
filter = self.builder.build(
'http://calf.sourceforge.net/plugins/Filter')
reverb2 = self.builder.build(
'http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(filter)
pedalboard.append(reverb2)
pedalboard.connect(reverb.outputs[0], filter.inputs[0])
pedalboard.connect(reverb.outputs[1], filter.inputs[0])
pedalboard.connect(filter.outputs[0], reverb2.inputs[0])
pedalboard.connect(reverb.outputs[0], reverb2.inputs[0])
filter.toggle()
filter.params[0].value = (filter.params[0].maximum -
filter.params[0].minimum) / 2
pedalboard.disconnect(filter.outputs[0], reverb2.inputs[0])
filter.toggle()
pedalboard.effects.remove(filter)
pedalboard.connections.append(
Connection(sys_effect.outputs[0], reverb.inputs[0]))
pedalboard.connections.append(
Connection(reverb2.outputs[0], sys_effect.inputs[0]))
for connection in list(pedalboard.connections):
pedalboard.connections.remove(connection)
for effect in list(pedalboard.effects):
pedalboard.effects.remove(effect)
def test_update_effect(self):
pedalboard = Pedalboard('Pedalboard 1')
effect1 = MagicMock()
effect2 = MagicMock()
pedalboard.append(effect1)
pedalboard.observer = MagicMock()
pedalboard.effects[0] = effect2
self.assertEqual(effect2.pedalboard, pedalboard)
self.assertEqual(pedalboard.effects[0], effect2)
pedalboard.observer.on_effect_updated.assert_called_with(
effect2, UpdateType.UPDATED, index=0, origin=pedalboard)
def default_bank_mock(self):
bank = BankMock('REST - Default Bank' + str(uuid.uuid4()))
pedalboard = Pedalboard('REST - Default Pedalboard')
reverb = self.plugins_builder.build('http://calf.sourceforge.net/plugins/Reverb')
reverb2 = self.plugins_builder.build('http://calf.sourceforge.net/plugins/Reverb')
bank.append(pedalboard)
pedalboard.append(reverb)
pedalboard.append(reverb2)
reverb.outputs[0].connect(reverb2.inputs[0])
return bank
def read(self, json):
pedalboard = Pedalboard(json['name'])
effect_reader = EffectReader(self.system_effect)
for effect_json in json['effects']:
pedalboard.append(effect_reader.read(effect_json))
connection_reader = ConnectionReader(pedalboard, self.system_effect)
for connection_json in json['connections']:
port_output, port_input = connection_reader.read(connection_json)
pedalboard.connect(port_output, port_input)
if 'data' in json:
pedalboard.data = json['data']
return pedalboard
def test_disconnect_connection_not_created(self):
pedalboard = Pedalboard('Pedalboard name')
builder = OutputTest.builder
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(reverb2)
pedalboard.observer = MagicMock()
with self.assertRaises(ValueError):
pedalboard.disconnect(reverb.outputs[1], reverb2.inputs[0])
pedalboard.observer.on_connection_updated.assert_not_called()
def test_append_notaddable(self):
builder = Lv2EffectBuilder()
element1 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
element2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard = Pedalboard('name')
connection = Connection(element1.outputs[0], element2.inputs[0])
with self.assertRaises(NotAddableError):
pedalboard.connections.append(connection)
pedalboard.append(element2)
with self.assertRaises(NotAddableError):
pedalboard.connections.append(connection)
pedalboard.append(element1)
pedalboard.connections.append(connection) # All effects added - OK
def test_disconnect_connection_not_created(self):
pedalboard = Pedalboard('Pedalboard name')
builder = MidiOutputTest.builder
cctonode = builder.build(
'http://gareus.org/oss/lv2/midifilter#cctonote')
cctonode2 = builder.build(
'http://gareus.org/oss/lv2/midifilter#cctonote')
pedalboard.append(cctonode)
pedalboard.append(cctonode2)
pedalboard.observer = MagicMock()
with self.assertRaises(ValueError):
pedalboard.disconnect(cctonode.midi_outputs[0],
cctonode2.midi_inputs[0])
pedalboard.observer.on_connection_updated.assert_not_called()
def test_system_midi_port(self):
from pluginsmanager.observer.mod_host.mod_host import ModHost
from pluginsmanager.model.pedalboard import Pedalboard
from pluginsmanager.model.lv2.lv2_effect_builder import Lv2EffectBuilder
from pluginsmanager.model.system.system_effect import SystemEffect
jack_system = SystemEffect(
'system',
[], # audio inputs
['playback_1', 'playback_2'], # audio output
[], # midi inputs
[] # midi outputs
)
jack_ttymidi = SystemEffect(
'ttymidi',
[], # audio inputs
[], # audio output
['MIDI_in'], # midi inputs
['MIDI_out'] # midi outputs
)
modhost = ModHost('localhost')
modhost.connect()
pedalboard = Pedalboard('MDA-EP')
builder = Lv2EffectBuilder()
ep = builder.build(
'http://guitarix.sourceforge.net/plugins/gx_oc_2_#_oc_2_')
pedalboard.append(ep)
# REMEMBER: FIRST OUTPUT, SECOND INPUT
# EPiano contains two audio output ports and one midi input port
pedalboard.connect(ep.outputs[0], jack_system.inputs[0])
pedalboard.connect(jack_ttymidi.midi_outputs[0], ep.midi_inputs[0])
# If not using banks manager, the changes will not be applied automatically
# then, is necessary changes the pedalboard at the end
modhost.pedalboard = pedalboard
# Safe close
modhost.close()
def test_json(self):
bank = Bank('Bank 1')
pedalboard = Pedalboard('Rocksmith')
builder = Lv2EffectBuilder()
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
filter = builder.build('http://calf.sourceforge.net/plugins/Filter')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(filter)
pedalboard.append(reverb2)
reverb.outputs[0].connect(filter.inputs[0])
reverb.outputs[1].connect(filter.inputs[0])
filter.outputs[0].connect(reverb2.inputs[0])
reverb.outputs[0].connect(reverb2.inputs[0])
bank.append(pedalboard)
print((json.dumps(bank.json, sort_keys=True, indent=2)))
def bank(self, midi=True):
sys_effect = self.system_effect
bank = Bank('Bank 1')
pedalboard = Pedalboard('Pedalboard 1')
bank.append(pedalboard)
bank.append(Pedalboard('Pedalboard is a Pedalboard?'))
reverb = self.builder.build('http://calf.sourceforge.net/plugins/Reverb')
filter = self.builder.build('http://calf.sourceforge.net/plugins/Filter')
reverb2 = self.builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(filter)
pedalboard.append(reverb2)
pedalboard.connect(reverb.outputs[0], filter.inputs[0])
pedalboard.connect(reverb.outputs[1], filter.inputs[0])
pedalboard.connect(filter.outputs[0], reverb2.inputs[0])
pedalboard.connect(reverb.outputs[0], reverb2.inputs[0])
if midi:
cctonode = self.builder.build('http://gareus.org/oss/lv2/midifilter#cctonote')
pedalboard.append(cctonode)
pedalboard.connect(cctonode.midi_outputs[0], sys_effect.midi_inputs[0])
pedalboard.connect(sys_effect.midi_outputs[0], cctonode.midi_inputs[0])
pedalboard.connections.append(Connection(sys_effect.outputs[0], reverb.inputs[0]))
pedalboard.connections.append(Connection(reverb2.outputs[0], sys_effect.inputs[0]))
filter.toggle()
filter.params[0].value = (filter.params[0].maximum - filter.params[0].minimum) / 3
return bank
def test_delete_effect(self):
pedalboard = Pedalboard('Bank 1')
effect = MagicMock()
effect2 = MagicMock()
pedalboard.append(effect)
pedalboard.append(effect2)
pedalboard.observer = MagicMock()
del pedalboard.effects[1]
self.assertEqual(effect2.pedalboard, None)
self.assertEqual(len(pedalboard.effects), 1)
pedalboard.observer.on_effect_updated.assert_called_with(
effect2, UpdateType.DELETED, index=1, origin=pedalboard)
del pedalboard.effects[0]
self.assertEqual(effect.pedalboard, None)
self.assertEqual(len(pedalboard.effects), 0)
pedalboard.observer.on_effect_updated.assert_called_with(
effect, UpdateType.DELETED, index=0, origin=pedalboard)
def test_index(self):
builder = EffectTest.builder
reverb1 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
reverb3 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard = Pedalboard(name='My awesome pedalboard')
pedalboard.append(reverb1)
pedalboard.append(reverb2)
pedalboard.append(reverb3)
self.assertEqual(0, reverb1.index)
self.assertEqual(1, reverb2.index)
self.assertEqual(2, reverb3.index)
pedalboard.effects.remove(reverb2)
self.assertEqual(0, reverb1.index)
self.assertEqual(1, reverb3.index)
with self.assertRaises(IndexError):
reverb2.index
def convert(self, pedalboard_path, system_effect=None):
"""
:param Path pedalboard_path: Path that the pedalboard has been persisted.
Generally is in format `path/to/pedalboard/name.pedalboard`
:param SystemEffect system_effect: Effect that contains the audio interface outputs and inputs
or None for **auto discover**
:return Pedalboard: Pedalboard loaded
"""
info = self.get_pedalboard_info(pedalboard_path)
if system_effect is None:
system_effect = self.discover_system_effect(info)
pedalboard = Pedalboard(info['title'])
effects_instance = {}
for effect_data in info['plugins']:
effect = self._generate_effect(effect_data)
pedalboard.append(effect)
effects_instance[effect_data['instance']] = effect
try:
for connection_data in info['connections']:
output_port = self._get_port(connection_data['source'],
effects_instance, system_effect)
input_port = self._get_port(connection_data['target'],
effects_instance, system_effect)
pedalboard.connect(output_port, input_port)
except PortNotFoundError as e:
if self.ignore_errors:
print("WARNING:", e)
else:
raise e
return pedalboard
def bank(self):
sys_effect = SystemEffect('system', ('capture_1', 'capture_2'),
('playback_1', 'playback_2'))
bank = Bank('Bank 1')
pedalboard = Pedalboard('Pedalboard 1')
bank.append(pedalboard)
bank.append(Pedalboard('Pedalboard is a Pedalboard?'))
reverb = self.builder.build(
'http://calf.sourceforge.net/plugins/Reverb')
filter = self.builder.build(
'http://calf.sourceforge.net/plugins/Filter')
reverb2 = self.builder.build(
'http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(filter)
pedalboard.append(reverb2)
reverb.outputs[0].connect(filter.inputs[0])
reverb.outputs[1].connect(filter.inputs[0])
filter.outputs[0].connect(reverb2.inputs[0])
reverb.outputs[0].connect(reverb2.inputs[0])
pedalboard.connections.append(
Connection(sys_effect.outputs[0], reverb.inputs[0]))
pedalboard.connections.append(
Connection(reverb2.outputs[0], sys_effect.inputs[0]))
filter.toggle()
filter.params[0].value = (filter.params[0].maximum -
filter.params[0].minimum) / 3
return bank
def test_observers(self):
mock = MagicMock()
observer = Autosaver('data/test/')
observer.save = mock
observer.delete = mock
manager = BanksManager()
manager.register(observer)
bank = Bank('Bank 1')
manager.append(bank)
observer.save.assert_called_with(bank)
pedalboard = Pedalboard('Rocksmith')
bank.append(pedalboard)
observer.save.assert_called_with(bank)
builder = Lv2EffectBuilder()
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
filter = builder.build('http://calf.sourceforge.net/plugins/Filter')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
observer.save.assert_called_with(bank)
pedalboard.append(filter)
observer.save.assert_called_with(bank)
pedalboard.append(reverb2)
observer.save.assert_called_with(bank)
reverb.outputs[0].connect(filter.inputs[0])
observer.save.assert_called_with(bank)
reverb.outputs[1].connect(filter.inputs[0])
observer.save.assert_called_with(bank)
filter.outputs[0].connect(reverb2.inputs[0])
observer.save.assert_called_with(bank)
reverb.outputs[0].connect(reverb2.inputs[0])
observer.save.assert_called_with(bank)
filter.toggle()
observer.save.assert_called_with(bank)
filter.params[0].value = (filter.params[0].maximum -
filter.params[0].minimum) / 2
observer.save.assert_called_with(bank)
del bank.pedalboards[0]
observer.save.assert_called_with(bank)
bank2 = Bank('Bank 2')
manager.banks[0] = bank2
observer.delete.assert_called_with(bank2)
observer.save.assert_called_with(bank2)
manager.banks.remove(bank2)
observer.delete.assert_called_with(bank2)
def test_observers_calls(self):
observer = MagicMock()
manager = BanksManager()
manager.register(observer)
bank = Bank('Bank 1')
manager.append(bank)
observer.on_bank_updated.assert_called_with(bank, UpdateType.CREATED, index=0, origin=manager)
pedalboard = Pedalboard('Rocksmith')
bank.append(pedalboard)
observer.on_pedalboard_updated.assert_called_with(pedalboard, UpdateType.CREATED, index=0, origin=bank)
builder = Lv2EffectBuilder()
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
filter = builder.build('http://calf.sourceforge.net/plugins/Filter')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
observer.on_effect_updated.assert_called_with(reverb, UpdateType.CREATED, index=reverb.index, origin=pedalboard)
pedalboard.append(filter)
observer.on_effect_updated.assert_called_with(filter, UpdateType.CREATED, index=filter.index, origin=pedalboard)
pedalboard.append(reverb2)
observer.on_effect_updated.assert_called_with(reverb2, UpdateType.CREATED, index=reverb2.index, origin=pedalboard)
pedalboard.connect(reverb.outputs[0], filter.inputs[0])
observer.on_connection_updated.assert_called_with(
Connection(reverb.outputs[0], filter.inputs[0]),
UpdateType.CREATED,
pedalboard=pedalboard
)
pedalboard.connect(reverb.outputs[1], filter.inputs[0])
observer.on_connection_updated.assert_called_with(
Connection(reverb.outputs[1], filter.inputs[0]),
UpdateType.CREATED,
pedalboard=pedalboard
)
pedalboard.connect(filter.outputs[0], reverb2.inputs[0])
observer.on_connection_updated.assert_called_with(
Connection(filter.outputs[0], reverb2.inputs[0]),
UpdateType.CREATED,
pedalboard=pedalboard
)
pedalboard.connect(reverb.outputs[0], reverb2.inputs[0])
observer.on_connection_updated.assert_called_with(
Connection(reverb.outputs[0], reverb2.inputs[0]),
UpdateType.CREATED,
pedalboard=pedalboard
)
filter.toggle()
observer.on_effect_status_toggled.assert_called_with(filter)
filter.params[0].value = (filter.params[0].maximum - filter.params[0].minimum) / 2
observer.on_param_value_changed.assert_called_with(filter.params[0])
del bank.pedalboards[0]
observer.on_pedalboard_updated.assert_called_with(pedalboard, UpdateType.DELETED, index=0, origin=bank)
bank2 = Bank('Bank 2')
old_bank = manager.banks[0]
manager.banks[0] = bank2
observer.on_bank_updated.assert_called_with(bank2, UpdateType.UPDATED, index=0, origin=manager, old=old_bank)
manager.banks.remove(bank2)
observer.on_bank_updated.assert_called_with(bank2, UpdateType.DELETED, index=0, origin=manager)
mod_host.connect()
manager.register(mod_host)
pedalboard = Pedalboard('Rocksmith')
bank.append(pedalboard)
mod_host.pedalboard = pedalboard
builder = Lv2EffectBuilder()
reverb = builder.build('http://calf.sourceforge.net/plugins/Reverb')
fuzz = builder.build(
'http://guitarix.sourceforge.net/plugins/gx_fuzz_#fuzz_')
reverb2 = builder.build('http://calf.sourceforge.net/plugins/Reverb')
pedalboard.append(reverb)
pedalboard.append(fuzz)
pedalboard.append(reverb2)
sys_effect = SystemEffect('system', ['capture_1'],
['playback_1', 'playback_2'])
pedalboard.connections.append(
Connection(sys_effect.outputs[0], reverb.inputs[0]))
reverb.outputs[0].connect(fuzz.inputs[0])
reverb.outputs[1].connect(fuzz.inputs[0])
fuzz.outputs[0].connect(reverb2.inputs[0])
reverb.outputs[0].connect(reverb2.inputs[0])
# Causes error
