124 lines
3.9 KiB
Python
124 lines
3.9 KiB
Python
import os
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import subprocess
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import tempfile
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from platypush.plugins import Plugin, action
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class TtsGooglePlugin(Plugin):
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"""
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Advanced text-to-speech engine that leverages the Google Cloud TTS API.
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See https://cloud.google.com/text-to-speech/docs/quickstart-client-libraries#client-libraries-install-python
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for how to enable the API on your account and get your credentials.
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Requires:
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* **google-cloud-texttospeech** - ``pip install google-cloud-texttospeech``
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* **mplayer** - see your distribution docs on how to install the mplayer package
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"""
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def __init__(self, language='en-US', voice=None,
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gender='FEMALE', credentials_file='~/.credentials/platypush/google/platypush-tts.json'):
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"""
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:param language: Language code, see https://cloud.google.com/text-to-speech/docs/basics for supported languages
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:type language: str
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:param voice: Voice type, see https://cloud.google.com/text-to-speech/docs/basics for supported voices
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:type voice: str
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:param gender: Voice gender (MALE, FEMALE or NEUTRAL)
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:type gender: str
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:param credentials_file: Where your GCloud credentials for TTS are stored, see https://cloud.google.com/text-to-speech/docs/basics
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:type credentials_file: str
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"""
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from google.cloud import texttospeech
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super().__init__()
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self.language = language
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self.voice = voice
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self.language = self._parse_language(language)
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self.voice = self._parse_voice(self.language, voice)
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self.gender = getattr(texttospeech.enums.SsmlVoiceGender, gender.upper())
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os.environ['GOOGLE_APPLICATION_CREDENTIALS'] = os.path.expanduser(credentials_file)
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def _parse_language(self, language):
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if language is None:
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language = self.language or 'en-US'
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if len(language) == 2:
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language = language.lower()
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if language == 'en':
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language = 'en-US'
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else:
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language += '-' + language.upper()
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return language
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@staticmethod
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def _parse_voice(language, voice):
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if voice is not None:
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return voice
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if language == 'en-US':
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return language + '-Wavenet-C'
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return language + '-Wavenet-A'
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@action
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def say(self, text, language=None, voice=None, gender=None):
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"""
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Say a phrase
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:param text: Text to say
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:type text: str
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:param language: Language code override
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:type language: str
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:param voice: Voice type override
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:type voice: str
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:param gender: Gender override
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:type gender: str
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"""
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from google.cloud import texttospeech
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client = texttospeech.TextToSpeechClient()
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synthesis_input = texttospeech.types.SynthesisInput(text=text)
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language = self._parse_language(language)
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voice = self._parse_voice(language, voice)
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if gender is None:
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gender = self.gender
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else:
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gender = getattr(texttospeech.enums.SsmlVoiceGender, gender.upper())
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voice = texttospeech.types.VoiceSelectionParams(
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language_code=language, ssml_gender=gender,
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name=voice)
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audio_config = texttospeech.types.AudioConfig(
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audio_encoding=texttospeech.enums.AudioEncoding.MP3)
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response = client.synthesize_speech(synthesis_input, voice, audio_config)
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with tempfile.NamedTemporaryFile() as f:
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f.write(response.audio_content)
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output = None
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errors = []
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cmd = ['mplayer -ao alsa -really-quiet -noconsolecontrols {}'
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.format(f.name)]
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try:
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return subprocess.check_output(
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cmd, stderr=subprocess.STDOUT, shell=True).decode('utf-8')
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except subprocess.CalledProcessError as e:
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raise RuntimeError(e.output.decode('utf-8'))
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# vim:sw=4:ts=4:et:
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