[#304] Removed old Picovoice integrations
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D90FBA7F76362774
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import time
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from platypush.backend import Backend
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from platypush.context import get_plugin
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from platypush.plugins.stt import SttPlugin
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class SttBackend(Backend):
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"""
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Base class for speech-to-text backends.
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"""
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def __init__(self, plugin_name: str, retry_sleep: float = 5.0, *args, **kwargs):
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"""
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:param plugin_name: Plugin name of the class that will be used for speech detection. Must be an instance of
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:class:`platypush.plugins.stt.SttPlugin`.
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:param retry_sleep: Number of seconds the backend will wait on failure before re-initializing the plugin
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(default: 5 seconds).
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"""
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super().__init__(*args, **kwargs)
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self.plugin_name = plugin_name
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self.retry_sleep = retry_sleep
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def run(self):
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super().run()
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self.logger.info('Starting {} speech-to-text backend'.format(self.__class__.__name__))
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while not self.should_stop():
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try:
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plugin: SttPlugin = get_plugin(self.plugin_name)
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with plugin:
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# noinspection PyProtectedMember
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plugin._detection_thread.join()
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except Exception as e:
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self.logger.exception(e)
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self.logger.warning('Encountered an unexpected error, retrying in {} seconds'.format(self.retry_sleep))
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time.sleep(self.retry_sleep)
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# vim:sw=4:ts=4:et:
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@ -1,21 +0,0 @@
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from platypush.backend.stt import SttBackend
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class SttPicovoiceHotwordBackend(SttBackend):
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"""
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Backend for the PicoVoice hotword detection plugin. Set this plugin to ``enabled`` if you
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want to run the hotword engine continuously instead of programmatically using
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``start_detection`` and ``stop_detection``.
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Requires:
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- The :class:`platypush.plugins.stt.deepspeech.SttPicovoiceHotwordPlugin` plugin configured and its dependencies
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installed.
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"""
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def __init__(self, *args, **kwargs):
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super().__init__('stt.picovoice.hotword', *args, **kwargs)
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# vim:sw=4:ts=4:et:
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@ -1,6 +0,0 @@
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manifest:
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events: {}
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install:
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pip: []
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package: platypush.backend.stt.picovoice.hotword
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type: backend
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@ -1,21 +0,0 @@
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from platypush.backend.stt import SttBackend
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class SttPicovoiceSpeechBackend(SttBackend):
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"""
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Backend for the PicoVoice speech detection plugin. Set this plugin to ``enabled`` if you
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want to run the speech engine continuously instead of programmatically using
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``start_detection`` and ``stop_detection``.
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Requires:
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- The :class:`platypush.plugins.stt.deepspeech.SttPicovoiceSpeechPlugin` plugin configured and its dependencies
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installed.
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"""
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def __init__(self, *args, **kwargs):
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super().__init__('stt.picovoice.speech', *args, **kwargs)
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# vim:sw=4:ts=4:et:
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@ -1,6 +0,0 @@
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manifest:
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events: {}
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install:
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pip: []
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package: platypush.backend.stt.picovoice.speech
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type: backend
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@ -1,336 +0,0 @@
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import queue
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import threading
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from abc import ABC, abstractmethod
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from typing import Optional, Union, List
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import sounddevice as sd
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from platypush.context import get_bus
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from platypush.message.event.stt import (
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SpeechDetectionStartedEvent,
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SpeechDetectionStoppedEvent,
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SpeechStartedEvent,
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SpeechDetectedEvent,
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HotwordDetectedEvent,
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ConversationDetectedEvent,
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)
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from platypush.message.response.stt import SpeechDetectedResponse
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from platypush.plugins import Plugin, action
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class SttPlugin(ABC, Plugin):
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"""
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Abstract class for speech-to-text plugins.
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"""
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_thread_stop_timeout = 10.0
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rate = 16000
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channels = 1
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def __init__(
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self,
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input_device: Optional[Union[int, str]] = None,
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hotword: Optional[str] = None,
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hotwords: Optional[List[str]] = None,
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conversation_timeout: Optional[float] = 10.0,
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block_duration: float = 1.0,
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):
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"""
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:param input_device: PortAudio device index or name that will be used for recording speech (default: default
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system audio input device).
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:param hotword: When this word is detected, the plugin will trigger a
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:class:`platypush.message.event.stt.HotwordDetectedEvent` instead of a
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:class:`platypush.message.event.stt.SpeechDetectedEvent` event. You can use these events for hooking other
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assistants.
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:param hotwords: Use a list of hotwords instead of a single one.
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:param conversation_timeout: If ``hotword`` or ``hotwords`` are set and ``conversation_timeout`` is set,
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the next speech detected event will trigger a :class:`platypush.message.event.stt.ConversationDetectedEvent`
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instead of a :class:`platypush.message.event.stt.SpeechDetectedEvent` event. You can hook custom hooks
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here to run any logic depending on the detected speech - it can emulate a kind of
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"OK, Google. Turn on the lights" interaction without using an external assistant (default: 10 seconds).
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:param block_duration: Duration of the acquired audio blocks (default: 1 second).
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"""
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super().__init__()
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self.input_device = input_device
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self.conversation_timeout = conversation_timeout
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self.block_duration = block_duration
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self.hotwords = set(hotwords or [])
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if hotword:
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self.hotwords = {hotword}
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self._conversation_event = threading.Event()
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self._input_stream: Optional[sd.InputStream] = None
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self._recording_thread: Optional[threading.Thread] = None
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self._detection_thread: Optional[threading.Thread] = None
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self._audio_queue: Optional[queue.Queue] = None
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self._current_text = ''
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def _get_input_device(self, device: Optional[Union[int, str]] = None) -> int:
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"""
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Get the index of the input device by index or name.
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:param device: Device index or name. If None is set then the function will return the index of the
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default audio input device.
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:return: Index of the audio input device.
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"""
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if not device:
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device = self.input_device
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if not device:
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return sd.query_hostapis()[0].get('default_input_device')
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if isinstance(device, int):
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assert device <= len(sd.query_devices())
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return device
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for i, dev in enumerate(sd.query_devices()):
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if dev['name'] == device:
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return i
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raise AssertionError('Device {} not found'.format(device))
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def on_speech_detected(self, speech: str) -> None:
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"""
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Hook called when speech is detected. Triggers the right event depending on the current context.
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:param speech: Detected speech.
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"""
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speech = speech.strip()
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if speech in self.hotwords:
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event = HotwordDetectedEvent(hotword=speech)
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if self.conversation_timeout:
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self._conversation_event.set()
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threading.Timer(
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self.conversation_timeout, lambda: self._conversation_event.clear()
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).start()
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elif self._conversation_event.is_set():
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event = ConversationDetectedEvent(speech=speech)
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else:
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event = SpeechDetectedEvent(speech=speech)
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get_bus().post(event)
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@staticmethod
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def convert_frames(frames: bytes) -> bytes:
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"""
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Conversion method for raw audio frames. It just returns the input frames as bytes. Override it if required
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by your logic.
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:param frames: Input audio frames, as bytes.
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:return: The audio frames as passed on the input. Override if required.
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"""
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return frames
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def on_detection_started(self) -> None:
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"""
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Method called when the ``detection_thread`` starts. Initialize your context variables and models here if
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required.
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"""
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pass
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def on_detection_ended(self) -> None:
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"""
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Method called when the ``detection_thread`` stops. Clean up your context variables and models here.
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"""
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pass
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def before_recording(self) -> None:
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"""
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Method called when the ``recording_thread`` starts. Put here any logic that you may want to run before the
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recording thread starts.
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"""
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pass
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def on_recording_started(self) -> None:
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"""
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Method called after the ``recording_thread`` opens the audio device. Put here any logic that you may want to
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run after the recording starts.
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"""
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pass
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def on_recording_ended(self) -> None:
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"""
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Method called when the ``recording_thread`` stops. Put here any logic that you want to run after the audio
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device is closed.
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"""
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pass
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@abstractmethod
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def detect_speech(self, frames) -> str:
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"""
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Method called within the ``detection_thread`` when new audio frames have been captured. Must be implemented
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by the derived classes.
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:param frames: Audio frames, as returned by ``convert_frames``.
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:return: Detected text, as a string. Returns an empty string if no text has been detected.
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"""
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raise NotImplementedError
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def process_text(self, text: str) -> None:
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if (not text and self._current_text) or (text and text == self._current_text):
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self.on_speech_detected(self._current_text)
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self._current_text = ''
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else:
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if text:
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if not self._current_text:
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get_bus().post(SpeechStartedEvent())
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self.logger.info('Intermediate speech results: [{}]'.format(text))
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self._current_text = text
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def detection_thread(self) -> None:
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"""
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This thread reads frames from ``_audio_queue``, performs the speech-to-text detection and calls
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"""
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self._current_text = ''
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self.logger.debug('Detection thread started')
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self.on_detection_started()
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while self._audio_queue:
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try:
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frames = self._audio_queue.get()
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frames = self.convert_frames(frames)
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except Exception as e:
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self.logger.warning(
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'Error while feeding audio to the model: {}'.format(str(e))
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)
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continue
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text = self.detect_speech(frames).strip()
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self.process_text(text)
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self.on_detection_ended()
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self.logger.debug('Detection thread terminated')
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def recording_thread(
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self,
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block_duration: Optional[float] = None,
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block_size: Optional[int] = None,
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input_device: Optional[str] = None,
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) -> None:
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"""
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Recording thread. It reads raw frames from the audio device and dispatches them to ``detection_thread``.
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:param block_duration: Audio blocks duration. Specify either ``block_duration`` or ``block_size``.
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:param block_size: Size of the audio blocks. Specify either ``block_duration`` or ``block_size``.
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:param input_device: Input device
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"""
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assert (block_duration or block_size) and not (
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block_duration and block_size
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), 'Please specify either block_duration or block_size'
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if not block_size:
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block_size = int(self.rate * self.channels * block_duration)
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self.before_recording()
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self.logger.debug('Recording thread started')
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device = self._get_input_device(input_device)
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self._input_stream = sd.InputStream(
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samplerate=self.rate,
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device=device,
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channels=self.channels,
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dtype='int16',
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latency=0,
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blocksize=block_size,
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)
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self._input_stream.start()
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self.on_recording_started()
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get_bus().post(SpeechDetectionStartedEvent())
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while self._input_stream:
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try:
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frames = self._input_stream.read(block_size)[0]
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except Exception as e:
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self.logger.warning(
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'Error while reading from the audio input: {}'.format(str(e))
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)
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continue
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self._audio_queue.put(frames)
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get_bus().post(SpeechDetectionStoppedEvent())
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self.on_recording_ended()
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self.logger.debug('Recording thread terminated')
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@abstractmethod
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@action
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def detect(self, audio_file: str) -> SpeechDetectedResponse:
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"""
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Perform speech-to-text analysis on an audio file. Must be implemented by the derived classes.
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:param audio_file: Path to the audio file.
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"""
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raise NotImplementedError
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def __enter__(self):
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"""
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Context manager enter. Starts detection and returns self.
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"""
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self.start_detection()
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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"""
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Context manager exit. Stops detection.
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"""
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self.stop_detection()
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@action
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def start_detection(
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self,
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input_device: Optional[str] = None,
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seconds: Optional[float] = None,
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block_duration: Optional[float] = None,
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) -> None:
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"""
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Start the speech detection engine.
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:param input_device: Audio input device name/index override
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:param seconds: If set, then the detection engine will stop after this many seconds, otherwise it'll
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start running until ``stop_detection`` is called or application stop.
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:param block_duration: ``block_duration`` override.
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"""
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assert (
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not self._input_stream and not self._recording_thread
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), 'Speech detection is already running'
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block_duration = block_duration or self.block_duration
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input_device = input_device if input_device is not None else self.input_device
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self._audio_queue = queue.Queue()
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self._recording_thread = threading.Thread(
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target=lambda: self.recording_thread(
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block_duration=block_duration, input_device=input_device
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)
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)
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self._recording_thread.start()
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self._detection_thread = threading.Thread(
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target=lambda: self.detection_thread()
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)
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self._detection_thread.start()
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if seconds:
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threading.Timer(seconds, lambda: self.stop_detection()).start()
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@action
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def stop_detection(self) -> None:
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"""
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Stop the speech detection engine.
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"""
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assert self._input_stream, 'Speech detection is not running'
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self._input_stream.stop(ignore_errors=True)
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self._input_stream.close(ignore_errors=True)
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self._input_stream = None
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if self._recording_thread:
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self._recording_thread.join(timeout=self._thread_stop_timeout)
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self._recording_thread = None
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self._audio_queue = None
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if self._detection_thread:
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self._detection_thread.join(timeout=self._thread_stop_timeout)
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self._detection_thread = None
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# vim:sw=4:ts=4:et:
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@ -1,120 +0,0 @@
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import os
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import struct
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from typing import Optional, List
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from platypush.message.response.stt import SpeechDetectedResponse
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from platypush.plugins import action
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from platypush.plugins.stt import SttPlugin
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class SttPicovoiceHotwordPlugin(SttPlugin):
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"""
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This plugin performs hotword detection using `PicoVoice <https://github.com/Picovoice>`_.
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"""
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def __init__(
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self,
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library_path: Optional[str] = None,
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model_file_path: Optional[str] = None,
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keyword_file_paths: Optional[List[str]] = None,
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sensitivity: float = 0.5,
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sensitivities: Optional[List[float]] = None,
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*args,
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**kwargs
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):
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from pvporcupine import Porcupine
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from pvporcupine.resources.util.python.util import (
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LIBRARY_PATH,
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MODEL_FILE_PATH,
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KEYWORD_FILE_PATHS,
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)
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super().__init__(*args, **kwargs)
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self.hotwords = list(self.hotwords)
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self._hotword_engine: Optional[Porcupine] = None
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self._library_path = os.path.abspath(
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os.path.expanduser(library_path or LIBRARY_PATH)
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)
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self._model_file_path = os.path.abspath(
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os.path.expanduser(model_file_path or MODEL_FILE_PATH)
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)
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if not keyword_file_paths:
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hotwords = KEYWORD_FILE_PATHS
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assert all(
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hotword in hotwords for hotword in self.hotwords
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), 'Not all the hotwords could be found. Available hotwords: {}'.format(
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list(hotwords.keys())
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)
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self._keyword_file_paths = [
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os.path.abspath(os.path.expanduser(hotwords[hotword]))
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for hotword in self.hotwords
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]
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else:
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self._keyword_file_paths = [
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os.path.abspath(os.path.expanduser(p)) for p in keyword_file_paths
|
||||
]
|
||||
|
||||
self._sensitivities = []
|
||||
if sensitivities:
|
||||
assert len(self._keyword_file_paths) == len(
|
||||
sensitivities
|
||||
), 'Please specify as many sensitivities as the number of configured hotwords'
|
||||
|
||||
self._sensitivities = sensitivities
|
||||
else:
|
||||
self._sensitivities = [sensitivity] * len(self._keyword_file_paths)
|
||||
|
||||
def convert_frames(self, frames: bytes) -> tuple:
|
||||
assert self._hotword_engine, 'The hotword engine is not running'
|
||||
return struct.unpack_from("h" * self._hotword_engine.frame_length, frames)
|
||||
|
||||
def on_detection_ended(self) -> None:
|
||||
if self._hotword_engine:
|
||||
self._hotword_engine.delete()
|
||||
self._hotword_engine = None
|
||||
|
||||
def detect_speech(self, frames: tuple) -> str:
|
||||
index = self._hotword_engine.process(frames)
|
||||
if index < 0:
|
||||
return ''
|
||||
|
||||
if index is True:
|
||||
index = 0
|
||||
return self.hotwords[index]
|
||||
|
||||
@action
|
||||
def detect(self, audio_file: str) -> SpeechDetectedResponse:
|
||||
"""
|
||||
Perform speech-to-text analysis on an audio file.
|
||||
|
||||
:param audio_file: Path to the audio file.
|
||||
"""
|
||||
pass
|
||||
|
||||
def recording_thread(
|
||||
self, input_device: Optional[str] = None, *args, **kwargs
|
||||
) -> None:
|
||||
assert self._hotword_engine, 'The hotword engine has not yet been initialized'
|
||||
super().recording_thread(
|
||||
block_size=self._hotword_engine.frame_length, input_device=input_device
|
||||
)
|
||||
|
||||
@action
|
||||
def start_detection(self, *args, **kwargs) -> None:
|
||||
from pvporcupine import Porcupine
|
||||
|
||||
self._hotword_engine = Porcupine(
|
||||
library_path=self._library_path,
|
||||
model_file_path=self._model_file_path,
|
||||
keyword_file_paths=self._keyword_file_paths,
|
||||
sensitivities=self._sensitivities,
|
||||
)
|
||||
|
||||
self.rate = self._hotword_engine.sample_rate
|
||||
super().start_detection(*args, **kwargs)
|
||||
|
||||
|
||||
# vim:sw=4:ts=4:et:
|
||||
|
|
@ -1,7 +0,0 @@
|
|||
manifest:
|
||||
events: {}
|
||||
install:
|
||||
pip:
|
||||
- pvporcupine
|
||||
package: platypush.plugins.stt.picovoice.hotword
|
||||
type: plugin
|
||||
|
|
@ -1,154 +0,0 @@
|
|||
import inspect
|
||||
import os
|
||||
import platform
|
||||
import struct
|
||||
import threading
|
||||
from typing import Optional
|
||||
|
||||
from platypush.message.event.stt import SpeechStartedEvent
|
||||
|
||||
from platypush.context import get_bus
|
||||
from platypush.message.response.stt import SpeechDetectedResponse
|
||||
from platypush.plugins import action
|
||||
from platypush.plugins.stt import SttPlugin
|
||||
|
||||
|
||||
class SttPicovoiceSpeechPlugin(SttPlugin):
|
||||
"""
|
||||
This plugin performs speech detection using `PicoVoice <https://github.com/Picovoice>`_.
|
||||
NOTE: The PicoVoice product used for real-time speech-to-text (Cheetah) can be used freely for
|
||||
personal applications on x86_64 Linux. Other architectures and operating systems require a commercial license.
|
||||
You can ask for a license `here <https://picovoice.ai/contact.html>`_.
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
library_path: Optional[str] = None,
|
||||
acoustic_model_path: Optional[str] = None,
|
||||
language_model_path: Optional[str] = None,
|
||||
license_path: Optional[str] = None,
|
||||
end_of_speech_timeout: int = 1,
|
||||
*args,
|
||||
**kwargs
|
||||
):
|
||||
"""
|
||||
:param library_path: Path to the Cheetah binary library for your OS
|
||||
(default: ``CHEETAH_INSTALL_DIR/lib/OS/ARCH/libpv_cheetah.EXT``).
|
||||
:param acoustic_model_path: Path to the acoustic speech model
|
||||
(default: ``CHEETAH_INSTALL_DIR/lib/common/acoustic_model.pv``).
|
||||
:param language_model_path: Path to the language model
|
||||
(default: ``CHEETAH_INSTALL_DIR/lib/common/language_model.pv``).
|
||||
:param license_path: Path to your PicoVoice license
|
||||
(default: ``CHEETAH_INSTALL_DIR/resources/license/cheetah_eval_linux_public.lic``).
|
||||
:param end_of_speech_timeout: Number of seconds of silence during speech recognition before considering
|
||||
a phrase over (default: 1).
|
||||
"""
|
||||
from pvcheetah import Cheetah
|
||||
|
||||
super().__init__(*args, **kwargs)
|
||||
|
||||
self._basedir = os.path.abspath(
|
||||
os.path.join(inspect.getfile(Cheetah), '..', '..', '..')
|
||||
)
|
||||
if not library_path:
|
||||
library_path = self._get_library_path()
|
||||
if not language_model_path:
|
||||
language_model_path = os.path.join(
|
||||
self._basedir, 'lib', 'common', 'language_model.pv'
|
||||
)
|
||||
if not acoustic_model_path:
|
||||
acoustic_model_path = os.path.join(
|
||||
self._basedir, 'lib', 'common', 'acoustic_model.pv'
|
||||
)
|
||||
if not license_path:
|
||||
license_path = os.path.join(
|
||||
self._basedir, 'resources', 'license', 'cheetah_eval_linux_public.lic'
|
||||
)
|
||||
|
||||
self._library_path = library_path
|
||||
self._language_model_path = language_model_path
|
||||
self._acoustic_model_path = acoustic_model_path
|
||||
self._license_path = license_path
|
||||
self._end_of_speech_timeout = end_of_speech_timeout
|
||||
self._stt_engine: Optional[Cheetah] = None
|
||||
self._speech_in_progress = threading.Event()
|
||||
|
||||
def _get_library_path(self) -> str:
|
||||
path = os.path.join(
|
||||
self._basedir, 'lib', platform.system().lower(), platform.machine()
|
||||
)
|
||||
return os.path.join(
|
||||
path, [f for f in os.listdir(path) if f.startswith('libpv_cheetah.')][0]
|
||||
)
|
||||
|
||||
def convert_frames(self, frames: bytes) -> tuple:
|
||||
assert self._stt_engine, 'The speech engine is not running'
|
||||
return struct.unpack_from("h" * self._stt_engine.frame_length, frames)
|
||||
|
||||
def on_detection_ended(self) -> None:
|
||||
if self._stt_engine:
|
||||
self._stt_engine.delete()
|
||||
self._stt_engine = None
|
||||
|
||||
def detect_speech(self, frames: tuple) -> str:
|
||||
text, is_endpoint = self._stt_engine.process(frames)
|
||||
text = text.strip()
|
||||
|
||||
if text:
|
||||
if not self._speech_in_progress.is_set():
|
||||
self._speech_in_progress.set()
|
||||
get_bus().post(SpeechStartedEvent())
|
||||
|
||||
self._current_text += ' ' + text.strip()
|
||||
|
||||
if is_endpoint:
|
||||
text = self._stt_engine.flush().strip().strip()
|
||||
if text:
|
||||
self._current_text += ' ' + text
|
||||
|
||||
self._speech_in_progress.clear()
|
||||
if self._current_text:
|
||||
self.on_speech_detected(self._current_text)
|
||||
|
||||
self._current_text = ''
|
||||
|
||||
return self._current_text
|
||||
|
||||
def process_text(self, text: str) -> None:
|
||||
pass
|
||||
|
||||
@action
|
||||
def detect(self, audio_file: str) -> SpeechDetectedResponse:
|
||||
"""
|
||||
Perform speech-to-text analysis on an audio file.
|
||||
|
||||
:param audio_file: Path to the audio file.
|
||||
"""
|
||||
pass
|
||||
|
||||
def recording_thread(
|
||||
self, input_device: Optional[str] = None, *args, **kwargs
|
||||
) -> None:
|
||||
assert self._stt_engine, 'The hotword engine has not yet been initialized'
|
||||
super().recording_thread(
|
||||
block_size=self._stt_engine.frame_length, input_device=input_device
|
||||
)
|
||||
|
||||
@action
|
||||
def start_detection(self, *args, **kwargs) -> None:
|
||||
from pvcheetah import Cheetah
|
||||
|
||||
self._stt_engine = Cheetah(
|
||||
library_path=self._library_path,
|
||||
acoustic_model_path=self._acoustic_model_path,
|
||||
language_model_path=self._language_model_path,
|
||||
license_path=self._license_path,
|
||||
endpoint_duration_sec=self._end_of_speech_timeout,
|
||||
)
|
||||
|
||||
self.rate = self._stt_engine.sample_rate
|
||||
self._speech_in_progress.clear()
|
||||
super().start_detection(*args, **kwargs)
|
||||
|
||||
|
||||
# vim:sw=4:ts=4:et:
|
||||
|
|
@ -1,7 +0,0 @@
|
|||
manifest:
|
||||
events: {}
|
||||
install:
|
||||
pip:
|
||||
- cheetah
|
||||
package: platypush.plugins.stt.picovoice.speech
|
||||
type: plugin
|
||||
Loading…
Reference in New Issue