forked from platypush/platypush
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6a8c83f99b
commit
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GPG key ID:
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8 changed files with 480 additions and 236 deletions
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@ -7,7 +7,6 @@ Backends
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:caption: Backends:
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platypush/backend/http.rst
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platypush/backend/midi.rst
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platypush/backend/nodered.rst
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platypush/backend/redis.rst
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platypush/backend/tcp.rst
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@ -1,6 +0,0 @@
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``midi``
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==========================
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.. automodule:: platypush.backend.midi
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:members:
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@ -1,136 +0,0 @@
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import time
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from threading import Timer
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from platypush.backend import Backend
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from platypush.message.event.midi import MidiMessageEvent
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class MidiBackend(Backend):
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"""
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This backend will listen for events from a MIDI device and post a
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MidiMessageEvent whenever a new MIDI event happens.
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"""
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def __init__(
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self,
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device_name=None,
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port_number=None,
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midi_throttle_time=None,
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*args,
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**kwargs
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):
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"""
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:param device_name: Name of the MIDI device. *N.B.* either
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`device_name` or `port_number` must be set.
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Use :meth:`platypush.plugins.midi.MidiPlugin.query_ports` to get the
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available ports indices and names
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:type device_name: str
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:param port_number: MIDI port number
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:type port_number: int
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:param midi_throttle_time: If set, the MIDI events will be throttled -
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max one per selected time frame (in seconds). Set this parameter if
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you want to synchronize MIDI events with plugins that normally
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operate with a lower throughput.
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:type midi_throttle_time: int
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"""
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import rtmidi
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super().__init__(*args, **kwargs)
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if (device_name and port_number is not None) or (
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not device_name and port_number is None
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):
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raise RuntimeError(
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'Either device_name or port_number (not both) '
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+ 'must be set in the MIDI backend configuration'
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)
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self.midi_throttle_time = midi_throttle_time
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self.midi = rtmidi.MidiIn()
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self.last_trigger_event_time = None
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self.midi_flush_timeout = None
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ports = self.midi.get_ports()
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if not ports:
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raise RuntimeError('No MIDI devices available')
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if device_name:
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if device_name not in ports:
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raise RuntimeError('MIDI device "{}" not found'.format(device_name))
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self.port_number = ports.index(device_name)
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self.device_name = device_name
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if port_number:
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if port_number < 0 or port_number >= len(ports):
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raise RuntimeError('MIDI port {} not found')
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self.port_number = port_number
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self.device_name = ports[port_number]
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self.midi.set_callback(self._on_midi_message())
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def _on_midi_message(self):
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def flush_midi_message(message):
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def _f():
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self.logger.info(
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'Flushing throttled MIDI message {} to the bus'.format(message)
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)
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delay = time.time() - self.last_trigger_event_time
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self.bus.post(MidiMessageEvent(message=message, delay=delay))
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return _f
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# noinspection PyUnusedLocal
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def callback(message, data):
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# rtmidi will provide a tuple in the format
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# (midi_message, time_since_last_event)
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delay = message[1]
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message = message[0]
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if self.midi_throttle_time and self.last_trigger_event_time:
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event_delta = time.time() - self.last_trigger_event_time
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if event_delta < self.midi_throttle_time:
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self.logger.debug('Skipping throttled message {}'.format(message))
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if self.midi_flush_timeout:
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self.midi_flush_timeout.cancel()
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self.midi_flush_timeout = Timer(
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self.midi_throttle_time - event_delta,
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flush_midi_message(message),
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)
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self.midi_flush_timeout.start()
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return
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self.last_trigger_event_time = time.time()
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self.bus.post(MidiMessageEvent(message=message, delay=delay))
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return callback
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def run(self):
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super().run()
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self.midi.open_port(self.port_number)
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self.logger.info(
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'Initialized MIDI backend, listening for events on device {}'.format(
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self.device_name
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)
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)
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while not self.should_stop():
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try:
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time.sleep(1)
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except Exception as e:
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self.logger.exception(e)
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if self.midi:
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self.midi.close_port()
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self.midi = None
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# vim:sw=4:ts=4:et:
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@ -1,15 +0,0 @@
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manifest:
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events:
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platypush.message.event.midi.MidiMessageEvent: when a new MIDI event is received
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install:
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apt:
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- python3-rtmidi
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dnf:
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- python-rtmidi
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pacman:
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- rtmidi
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- python-rtmidi
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pip:
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- rtmidi
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package: platypush.backend.midi
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type: backend
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@ -1,22 +1,57 @@
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from abc import ABC
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from typing import Any, List, Optional
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from platypush.message.event import Event
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class MidiMessageEvent(Event):
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class MidiEvent(Event, ABC):
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"""
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Event triggered upon received MIDI message
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Base class for MIDI events.
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"""
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def __init__(self, message, delay=None, *args, **kwargs):
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def __init__(self, *args, device: Optional[str], port: Optional[int], **kwargs):
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"""
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:param message: Received MIDI message
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:type message: tuple[int]
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:param device: The MIDI device name.
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:param port: The MIDI device port number.
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"""
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super().__init__(*args, device=device, port=port, **kwargs)
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:param delay: Time in seconds since the previous MIDI event (default: None)
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:type delay: float
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class MidiMessageEvent(MidiEvent):
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"""
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Event triggered upon received MIDI message.
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"""
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super().__init__(*args, message=message, delay=delay, **kwargs)
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def __init__(self, *args, message: List[int], data: Optional[Any] = None, **kwargs):
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"""
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:param message: The received MIDI message.
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:param data: Additional data associated to the event.
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"""
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super().__init__(*args, message=message, data=data, **kwargs)
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class MidiDeviceConnectedEvent(MidiEvent):
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"""
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Event triggered when a MIDI device is connected.
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"""
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class MidiDeviceDisconnectedEvent(MidiEvent):
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"""
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Event triggered when a MIDI device is disconnected.
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"""
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class MidiDeviceAddedEvent(MidiEvent):
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"""
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Event triggered when a MIDI device is added to the list of available devices.
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"""
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class MidiDeviceRemovedEvent(MidiEvent):
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"""
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Event triggered when a MIDI device is removed from the list of available devices.
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"""
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# vim:sw=4:ts=4:et:
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@ -1,46 +1,144 @@
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import time
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import re
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from threading import RLock, Timer
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from typing import Optional, Sequence, Union
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from platypush.plugins import Plugin, action
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import rtmidi
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from platypush.message.event.midi import MidiMessageEvent
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from platypush.plugins import RunnablePlugin, action
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from ._model import MidiDevice, MidiDeviceType, MidiDevices
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class MidiPlugin(Plugin):
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class MidiPlugin(RunnablePlugin):
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"""
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Virtual MIDI controller plugin. It allows you to send custom MIDI messages
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to any connected devices.
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to any connected MIDI devices and listen for MIDI events.
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"""
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_played_notes = set()
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def __init__(self, device_name='Platypush virtual MIDI output', **kwargs):
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def __init__(
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self,
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device_name: str = 'Platypush MIDI plugin',
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midi_devices: Optional[Sequence[Union[str, int]]] = None,
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poll_interval: Optional[float] = 5.0,
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event_resolution: Optional[float] = None,
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**kwargs,
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):
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"""
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:param device_name: MIDI virtual device name (default: *Platypush virtual MIDI output*)
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:type device_name: str
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:param device_name: Name of the MIDI device associated to this plugin.
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:param midi_devices: List of MIDI devices to open and monitor for
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events, by name or by port number. If set, and ``poll_interval``
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is set, then the plugin will only listen for events from these
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devices. If not set, and ``poll_interval`` is set, then the plugin
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will listen for events from all available MIDI devices (default).
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:param poll_interval: How often the plugin should scan for new MIDI
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devices. Set this to 0 or null to disable polling.
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:param event_resolution: If set, then the plugin will throttle
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MIDI events to the specified time resolution. If an event is
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triggered within the specified time resolution, then the event will
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be throttled and the last event will be discarded. This is useful
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to avoid sending too many MIDI messages in a short time frame.
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Default: no throttling.
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"""
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import rtmidi
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super().__init__(**kwargs)
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super().__init__(poll_interval=poll_interval, **kwargs)
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self._devices = MidiDevices()
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self.device_name = device_name
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self.midiout = rtmidi.MidiOut()
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available_ports = self.midiout.get_ports()
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if available_ports:
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self.midiout.open_port(0)
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self.logger.info('Initialized MIDI plugin on port 0')
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else:
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self.midiout.open_virtual_port(self.device_name)
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self._devices_to_monitor = {
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self._to_device_id(dev) for dev in (midi_devices or [])
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}
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self._midi_out = None
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self._midi_in = None
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self._last_midi_event = None
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self._last_event_trigger_time = None
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self._event_timer = None
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self._event_timer_lock = RLock()
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self._event_resolution = event_resolution
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self.logger.info(
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'Initialized MIDI plugin on virtual device {}'.format(self.device_name)
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'Initialized MIDI plugin on virtual device %s', self.device_name
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)
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@staticmethod
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def _to_device_id(device: Union[str, int]) -> Union[str, int]:
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try:
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device = int(device)
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except ValueError:
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pass
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return device
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@property
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def midi_in(self) -> rtmidi.MidiIn: # type: ignore
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if not self._midi_in:
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self._midi_in = rtmidi.MidiIn() # type: ignore
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self._midi_in.open_port()
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return self._midi_in
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@property
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def midi_out(self) -> rtmidi.MidiOut: # type: ignore
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if not self._midi_out:
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self._midi_out = rtmidi.MidiOut() # type: ignore
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self._midi_out.open_port()
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return self._midi_out
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def start_event_timer(self):
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def flush_last_event():
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self._last_event_trigger_time = time.time()
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if not self._last_midi_event:
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return
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self._bus.post(self._last_midi_event)
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with self._event_timer_lock:
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if not self._event_timer:
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self._event_timer = Timer(self._event_resolution or 0, flush_last_event)
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self._event_timer.start()
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return self._event_timer
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def _on_midi_message(self, device: Optional[MidiDevice] = None):
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def callback(message, data):
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# rtmidi will provide a tuple in the format
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# (midi_message, time_since_last_event)
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# delay = message[1]
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message = message[0]
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self._last_midi_event = event = MidiMessageEvent(
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message=message,
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data=data,
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device=device.name if device else None,
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port=device.port if device else None,
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)
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if self._event_resolution and self._last_event_trigger_time:
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event_delta = time.time() - self._last_event_trigger_time
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if event_delta < self._event_resolution:
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self.start_event_timer()
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self.logger.debug('Skipping throttled message: %s', message)
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return
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self._last_event_trigger_time = time.time()
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self._bus.post(event)
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return callback
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@action
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def send_message(self, values):
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def send_message(
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self, values: Sequence[int], device: Optional[Union[int, str]] = None
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):
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"""
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:param values: Values is expected to be a list containing the MIDI command code and the command parameters -
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see reference at https://ccrma.stanford.edu/~craig/articles/linuxmidi/misc/essenmidi.html
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:type values: list[int]
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:param values: Values is expected to be a list containing the MIDI
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command code and the command parameters - `see reference
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<https://ccrma.stanford.edu/~craig/articles/linuxmidi/misc/essenmidi.html>`_.
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Available MIDI commands:
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* ``0x80`` Note Off
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* ``0x90`` Note On
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* ``0xA0`` Aftertouch
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@ -60,25 +158,40 @@ class MidiPlugin(Plugin):
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* ``0xFC`` Stop (Sys Realtime)
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* ``0xFE`` Active Sensing (Sys Realtime)
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* ``0xFF`` System Reset (Sys Realtime)
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"""
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self.midiout.send_message(values)
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:param device: MIDI port to send the message to, by number or by name.
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If None then the message will be sent to the default port allocated
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for the plugin.
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"""
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if isinstance(device, (str, int)):
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if isinstance(device, str):
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dev = self._devices.by_type(MidiDeviceType.OUTPUT).get(device)
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else:
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dev = self._devices.by_port(device)
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assert dev, f'Could not find device by name {device}'
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assert (
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dev.device_type == MidiDeviceType.OUTPUT
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), f'The device {device} is not an output device'
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midi_out = dev.midi_out
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if not (midi_out and midi_out.is_port_open()):
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dev.open()
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else:
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midi_out = self.midi_out
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assert midi_out and midi_out.is_port_open(), 'No MIDI output port available'
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midi_out.send_message(values)
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@action
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def play_note(self, note, velocity, duration=0):
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def play(self, note: int, velocity: int, duration: float = 0):
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"""
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Play a note with selected velocity and duration.
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:param note: MIDI note in range 0-127 with #60 = C4
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:type note: int
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:param velocity: MIDI note velocity in range 0-127
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:type velocity: int
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:param duration: Note duration in seconds. Pass 0 if you don't want the note to get off
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:type duration: float
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"""
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self.send_message([0x90, note, velocity]) # Note on
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self._played_notes.add(note)
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@ -88,42 +201,110 @@ class MidiPlugin(Plugin):
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self._played_notes.remove(note)
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@action
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def release_note(self, note):
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def release(self, note: int):
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"""
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Release a played note.
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:param note: MIDI note in range 0-127 with #60 = C4
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:type note: int
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"""
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self.send_message([0x80, note, 0]) # Note off
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self._played_notes.remove(note)
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@action
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def release_all_notes(self):
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def release_all(self):
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"""
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Release all the notes being played.
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"""
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played_notes = self._played_notes.copy()
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for note in played_notes:
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self.release_note(note)
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self.release(note)
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@action
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def query_ports(self):
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def query(self):
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"""
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:returns: dict: A list of the available MIDI ports with index and name
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:returns: dict: A list of the available MIDI ports with index and name.
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Format: ``port_index: device_name``.
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.. code-block:: json
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{
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"in": {
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0: "Midi Through:Midi Through Port-0 14:0",
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1: "MPK mini 3:MPK mini 3 MIDI 1 32:0",
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2: "X-TOUCH MINI:X-TOUCH MINI MIDI 1 36:0",
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3: "RtMidiOut Client:Platypush MIDI plugin 129:0"
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},
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"out": {
|
||||
0: "Midi Through:Midi Through Port-0 14:0",
|
||||
1: "MPK mini 3:MPK mini 3 MIDI 1 32:0",
|
||||
2: "X-TOUCH MINI:X-TOUCH MINI MIDI 1 36:0"
|
||||
}
|
||||
}
|
||||
|
||||
"""
|
||||
in_ports = {int(port): dev for port, dev in enumerate(self.midi_in.get_ports())}
|
||||
out_ports = {
|
||||
int(port): dev for port, dev in enumerate(self.midi_out.get_ports())
|
||||
}
|
||||
|
||||
import rtmidi
|
||||
for device_type, devices in (
|
||||
(MidiDeviceType.INPUT, in_ports),
|
||||
(MidiDeviceType.OUTPUT, out_ports),
|
||||
):
|
||||
for port, name in devices.items():
|
||||
dev = MidiDevice(
|
||||
name=name,
|
||||
port=port,
|
||||
device_type=device_type,
|
||||
callback=self._on_midi_message,
|
||||
)
|
||||
|
||||
in_ports = rtmidi.MidiIn().get_ports()
|
||||
out_ports = rtmidi.MidiOut().get_ports()
|
||||
self._devices.add(dev)
|
||||
dev = self._devices.by_port(port)
|
||||
assert dev, f'Could not find device by port {port}'
|
||||
|
||||
if not self._is_self(dev) and (
|
||||
not self._devices_to_monitor
|
||||
or port in self._devices_to_monitor
|
||||
or name in self._devices_to_monitor
|
||||
):
|
||||
dev.open()
|
||||
|
||||
return {
|
||||
'in': dict(enumerate(in_ports)),
|
||||
'out': dict(enumerate(out_ports)),
|
||||
'in': in_ports,
|
||||
'out': out_ports,
|
||||
}
|
||||
|
||||
def _is_self(self, device: MidiDevice):
|
||||
return device.name == self.device_name or re.search(
|
||||
r'^RtMidi(In|Out) Client:', device.name
|
||||
)
|
||||
|
||||
def cleanup(self):
|
||||
self.release_all()
|
||||
if self._midi_in:
|
||||
self._midi_in.close_port()
|
||||
self._midi_in = None
|
||||
|
||||
if self._midi_out:
|
||||
self._midi_out.close_port()
|
||||
self._midi_out = None
|
||||
|
||||
self._devices.close()
|
||||
|
||||
def main(self):
|
||||
# Don't run the polling logic if the poll_interval is not set
|
||||
if not self.poll_interval:
|
||||
self.wait_stop()
|
||||
return
|
||||
|
||||
while not self.should_stop():
|
||||
self.query()
|
||||
self.wait_stop(self.poll_interval)
|
||||
|
||||
def stop(self):
|
||||
self.cleanup()
|
||||
super().stop()
|
||||
|
||||
|
||||
# vim:sw=4:ts=4:et:
|
||||
|
|
|
|||
180
platypush/plugins/midi/_model.py
Normal file
180
platypush/plugins/midi/_model.py
Normal file
|
|
@ -0,0 +1,180 @@
|
|||
from dataclasses import dataclass
|
||||
from enum import Enum
|
||||
from typing import Any, Callable, Dict, Optional, Sequence, Union
|
||||
|
||||
import rtmidi
|
||||
|
||||
from platypush.context import get_bus
|
||||
from platypush.message.event.midi import (
|
||||
MidiDeviceAddedEvent,
|
||||
MidiDeviceConnectedEvent,
|
||||
MidiDeviceDisconnectedEvent,
|
||||
MidiDeviceRemovedEvent,
|
||||
)
|
||||
|
||||
|
||||
class MidiDeviceType(Enum):
|
||||
"""
|
||||
Enum for MIDI device types.
|
||||
"""
|
||||
|
||||
INPUT = 'input'
|
||||
OUTPUT = 'output'
|
||||
|
||||
|
||||
@dataclass
|
||||
class MidiDevice:
|
||||
"""
|
||||
Data class for MIDI devices.
|
||||
"""
|
||||
|
||||
name: str
|
||||
port: int
|
||||
device_type: MidiDeviceType
|
||||
midi_in: Optional[rtmidi.MidiIn] = None # type: ignore
|
||||
midi_out: Optional[rtmidi.MidiOut] = None # type: ignore
|
||||
callback: Optional[
|
||||
Callable[
|
||||
[Optional["MidiDevice"]],
|
||||
Callable[[Sequence[int], Optional[Any]], Optional[Any]],
|
||||
]
|
||||
] = None
|
||||
|
||||
def open(self):
|
||||
"""
|
||||
Open the MIDI device.
|
||||
"""
|
||||
if self.device_type == MidiDeviceType.INPUT and not self.midi_in:
|
||||
get_bus().post(MidiDeviceConnectedEvent(device=self.name, port=self.port))
|
||||
self.midi_in = rtmidi.MidiIn() # type: ignore
|
||||
self.midi_in.open_port(self.port)
|
||||
if self.callback:
|
||||
self.midi_in.set_callback(self.callback(self))
|
||||
elif self.device_type == MidiDeviceType.OUTPUT and not self.midi_out:
|
||||
self.midi_out = rtmidi.MidiOut() # type: ignore
|
||||
self.midi_out.open_port(self.port)
|
||||
|
||||
def close(self):
|
||||
"""
|
||||
Close the MIDI device.
|
||||
"""
|
||||
if self.midi_in:
|
||||
self.midi_in.close_port()
|
||||
self.midi_in = None
|
||||
get_bus().post(
|
||||
MidiDeviceDisconnectedEvent(device=self.name, port=self.port)
|
||||
)
|
||||
|
||||
if self.midi_out:
|
||||
self.midi_out.close_port()
|
||||
self.midi_out = None
|
||||
get_bus().post(
|
||||
MidiDeviceDisconnectedEvent(device=self.name, port=self.port)
|
||||
)
|
||||
|
||||
def is_open(self) -> bool:
|
||||
"""
|
||||
Check if the MIDI device is open.
|
||||
|
||||
:returns: True if the MIDI device is open, False otherwise.
|
||||
"""
|
||||
return (self.midi_in is not None and self.midi_in.is_port_open()) or (
|
||||
self.midi_out is not None and self.midi_out.is_port_open()
|
||||
)
|
||||
|
||||
|
||||
class MidiDevices:
|
||||
"""
|
||||
Class to manage MIDI devices.
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
self._devices_by_port = {}
|
||||
self._devices_by_name = {}
|
||||
self._devices_by_type = {MidiDeviceType.INPUT: {}, MidiDeviceType.OUTPUT: {}}
|
||||
|
||||
def add(self, device: MidiDevice):
|
||||
"""
|
||||
Add a MIDI device to the list of available devices.
|
||||
|
||||
:param device: The MIDI device to add.
|
||||
"""
|
||||
if (
|
||||
device.port not in self._devices_by_port
|
||||
or self._devices_by_port[device.port].name != device.name
|
||||
):
|
||||
self._devices_by_port[device.port] = device
|
||||
|
||||
if device.name not in self._devices_by_name:
|
||||
get_bus().post(MidiDeviceAddedEvent(device=device.name, port=device.port))
|
||||
self._devices_by_name[device.name] = device
|
||||
|
||||
if device.port not in self._devices_by_type[device.device_type]:
|
||||
self._devices_by_type[device.device_type][device.name] = device
|
||||
|
||||
def remove(self, device: MidiDevice):
|
||||
"""
|
||||
Remove a MIDI device from the list of available devices.
|
||||
|
||||
:param device: The MIDI device to remove.
|
||||
"""
|
||||
device.close()
|
||||
del self._devices_by_port[device.port]
|
||||
del self._devices_by_name[device.name]
|
||||
del self._devices_by_type[device.device_type][device.name]
|
||||
get_bus().post(MidiDeviceRemovedEvent(device=device.name, port=device.port))
|
||||
|
||||
def by_port(self, port: int) -> Optional[MidiDevice]:
|
||||
"""
|
||||
Get a MIDI device by port.
|
||||
|
||||
:param port: The port of the MIDI device.
|
||||
:returns: The MIDI device if found, None otherwise.
|
||||
"""
|
||||
return self._devices_by_port.get(port)
|
||||
|
||||
def by_name(self, name: str) -> Optional[MidiDevice]:
|
||||
"""
|
||||
Get a MIDI device by name.
|
||||
|
||||
:param name: The name of the MIDI device.
|
||||
:returns: The MIDI device if found, None otherwise.
|
||||
"""
|
||||
return self._devices_by_name.get(name)
|
||||
|
||||
def by_type(self, device_type: MidiDeviceType) -> Dict[str, MidiDevice]:
|
||||
"""
|
||||
Get all MIDI devices of a certain type.
|
||||
|
||||
:param device_type: The type of the MIDI devices.
|
||||
:returns: A list of MIDI devices of the specified type.
|
||||
"""
|
||||
return self._devices_by_type[device_type]
|
||||
|
||||
def get(self, device: Union[str, int]) -> Optional[MidiDevice]:
|
||||
"""
|
||||
Get a MIDI device by name or port.
|
||||
|
||||
:param device: The name or port of the MIDI device.
|
||||
:returns: The MIDI device if found, None otherwise.
|
||||
"""
|
||||
if isinstance(device, str):
|
||||
return self.by_name(device)
|
||||
if isinstance(device, int):
|
||||
return self.by_port(device)
|
||||
return None
|
||||
|
||||
def close(self):
|
||||
"""
|
||||
Close and clear all MIDI devices.
|
||||
"""
|
||||
devices = list(self._devices_by_port.values())
|
||||
for dev in devices:
|
||||
self.remove(dev)
|
||||
|
||||
self._devices_by_port.clear()
|
||||
self._devices_by_name.clear()
|
||||
self._devices_by_type = {MidiDeviceType.INPUT: {}, MidiDeviceType.OUTPUT: {}}
|
||||
|
||||
|
||||
# vim:sw=4:ts=4:et:
|
||||
|
|
@ -1,13 +1,19 @@
|
|||
manifest:
|
||||
events: {}
|
||||
events:
|
||||
- platypush.message.event.midi.MidiDeviceAddedEvent
|
||||
- platypush.message.event.midi.MidiDeviceConnectedEvent
|
||||
- platypush.message.event.midi.MidiDeviceDisconnectedEvent
|
||||
- platypush.message.event.midi.MidiDeviceRemovedEvent
|
||||
- platypush.message.event.midi.MidiMessageEvent
|
||||
install:
|
||||
apt:
|
||||
- python3-rtmidi
|
||||
dnf:
|
||||
- python-rtmidi
|
||||
pacman:
|
||||
- rtmidi
|
||||
- python-rtmidi
|
||||
pip:
|
||||
- python-rtmidi
|
||||
- rtmidi
|
||||
package: platypush.plugins.midi
|
||||
type: plugin
|
||||
|
|
|
|||
Loading…
Reference in a new issue