# Copyright 2017 SrMouraSilva
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from abc import ABCMeta, abstractmethod
from pluginsmanager.model.connection import Connection, ConnectionError
from unittest.mock import MagicMock
[docs]class Output(metaclass=ABCMeta):
"""
Output is the medium in which the audio processed by the effect is returned.
Effects usually have a one (mono) or two outputs (stereo L + stereo R). .
For obtains the outputs::
>>> my_awesome_effect
<Lv2Effect object as 'Calf Reverb' active at 0x7fd58d874ba8>
>>> my_awesome_effect.outputs
(<Lv2Output object as Out L at 0x7fd58c58a438>, <Lv2Output object as Out R at 0x7fd58c58d550>)
>>> output = my_awesome_effect.outputs[0]
>>> output
<Lv2Output object as Out L at 0x7fd58c58a438>
>>> symbol = my_awesome_effect.outputs[0].symbol
>>> symbol
'output_l'
>>> my_awesome_effect.outputs[symbol] == output
True
For connections between effects, view :class:`Connections`.
:param Effect effect: Effect of output
"""
def __init__(self, effect):
self._effect = effect
self.observer = MagicMock()
self._unique_for_all_pedalboards = False
@property
def effect(self):
"""
:return: Effect of output
"""
return self._effect
[docs] def connect(self, effect_input):
"""
Connect it with effect_input::
>>> driver_output = driver.outputs[0]
>>> reverb_input = reverb.inputs[0]
>>> Connection(driver_output, reverb_input) in driver.effect.connections
False
>>> driver_output.connect(reverb_input)
>>> Connection(driver_output, reverb_input) in driver.effect.connections
True
.. note::
This method does not work for all cases.
class:`SystemOutput` can not be connected with class:`SystemInput` this way.
For this case, use ::
>>> pedalboard.connections.append(Connection(system_output, system_input))
:param Input effect_input: Input that will be connected with it
"""
if self._unique_for_all_pedalboards and effect_input._unique_for_all_pedalboards:
error = "Isn't possible connect this way. Please use pedalboard.connect(Connection(output, input))"
raise ConnectionError(error)
effect_input.effect.pedalboard.connections.append(Connection(self, effect_input))
[docs] def disconnect(self, effect_input):
"""
Disconnect it with effect_input
>>> driver_output = driver.outputs[0]
>>> reverb_input = reverb.inputs[0]
>>> Connection(driver_output, reverb_input) in driver.effect.connections
True
>>> driver_output.disconnect(reverb_input)
>>> Connection(driver_output, reverb_input) in driver.effect.connections
False
.. note::
This method does not work for all cases.
class:`SystemOutput` can not be disconnected with class:`SystemInput` this way.
For this case, use ::
>>> pedalboard.connections.remove(Connection(system_output, system_input))
:param Input effect_input: Input that will be disconnected with it
"""
if self._unique_for_all_pedalboards and effect_input._unique_for_all_pedalboards:
error = "Isn't possible connect this way. Please use pedalboard.connect(Connection(output, input))"
raise ConnectionError(error)
self.effect.pedalboard.connections.remove(Connection(self, effect_input))
@property
@abstractmethod
def symbol(self):
"""
:return: Output identifier
"""
pass
@property
def json(self):
"""
Get a json decodable representation of this output
:return dict: json representation
"""
return self.__dict__
@property
def __dict__(self):
return {
'effect': self.effect.index,
'symbol': self.symbol,
'index': self.index,
}
@property
def index(self):
"""
:return Output index in the your effect
"""
return self.effect.outputs.index(self)