class CommandsRecognition(ApiState):
def __init__(self, callback, language="pl-PL", api_option=ApiOption.GOOGLE):
super().__init__()
self.callback_command_detected = callback
self.api_option = api_option
self.language = language
self.listen_thread = None
self.phrase_time_limit = 3
try:
self.recognizer = Recognizer()
self.microphone = Microphone()
"""
adjust the recognizer sensitivity to ambient noise and record audio
from the microphone
"""
with self.microphone as source:
self.recognizer.adjust_for_ambient_noise(source)
except OSError as ose_err:
Logger.critical("OSError: {0}".format(ose_err))
self.api_runs = False
self.api_info = GLO_MSG['MICROPHONE_FAILURE']
return
except Exception as err:
Logger.critical("Exception: {0}".format(err))
self.api_runs = False
self.api_info = GLO_MSG['MICROPHONE_FAILURE']
return
Logger.debug("Initialization of CommandsRecognition class")
self.api_info = GLO_MSG['MICROPHONE_INITIALIZED']
def validate_command(self, command):
if command.lower() in GLO_CMD.values():
detected_command_id = GET_COMMAND(command.lower())
Logger.info("GLO_CMD command available -> {0}".format(command.lower()))
self.callback_command_detected(detected_command_id)
else:
Logger.info("Detected command: {0}".format(command.lower()))
def callback_recognition(self, recognizer, audio):
try:
command = self._api_recognition(audio)
self.validate_command(command)
except UnboundLocalError as err:
Logger.warning("UnboundLocalError : {0} ".format(err))
except RequestError as err:
Logger.warning("RequestError : {0} ".format(err))
except UnknownValueError as err:
Logger.debug("UnknownValueError : {0} ".format(err))
def background_listen(self):
self.listen_thread = self.recognizer.listen_in_background(
source=self.microphone, callback=self.callback_recognition, phrase_time_limit=self.phrase_time_limit)
def _api_recognition(self, audio):
if self.api_option is ApiOption.GOOGLE:
return self.recognizer.recognize_google(audio, language=self.language)
elif self.api_option is ApiOption.GOOGLE_CLOUD:
# Support languages: https://cloud.google.com/speech-to-text/docs/languages
return self.recognizer.recognize_google_cloud(audio, credentials_json='', language=self.language)
elif self.api_option is ApiOption.SPHINX:
# Support languages : https://sourceforge.net/projects/cmusphinx/files/Acoustic%20and%20Language%20Models/
return self.recognizer.recognize_sphinx(audio, language=self.language)
elif self.api_option is ApiOption.WIT:
# Support languages : https://wit.ai/faq, login required
return self.recognizer.recognize_wit(audio, key='',)
elif self.api_option is ApiOption.AZURE_BING:
# Support languages : https://docs.microsoft.com/en-us/azure/cognitive-services/bing-web-search/language-support, login required
self.recognizer.recognize_bing(audio, key='', language=self.language)
elif self.api_option is ApiOption.LEX:
# Support languages: ONLY ENG -> https://docs.aws.amazon.com/lex/latest/dg/gl-limits.html
return self.recognizer.recognize_lex(audio)
elif self.api_option is ApiOption.HOUNDIFY:
# Support languages: ONLY ENG, login required
return self.recognizer.recognize_houndify(audio, client_id='', client_key='')
elif self.api_option is ApiOption.IBM:
# Support languages : https://www.ibm.com/watson/services/language-translator/, login required
return self.recognizer.recognize_ibm(audio, username='', password='', language=self.language)
else:
Logger.error("Api recognition option is not defined")
