Add support of the Google Cloud TTS

mycroft/tts/google_cloud_tts.py

@@ -0,0 +1,103 @@
+# Copyright 2019 Mycroft AI Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from .tts import TTS, TTSValidator
+from mycroft.configuration import Configuration
+
+from google.cloud import texttospeech
+from google.oauth2 import service_account
+
+VOICE_LIST = {
+    "male": texttospeech.SsmlVoiceGender.MALE,
+    "female": texttospeech.SsmlVoiceGender.FEMALE
+}
+
+OUTPUT_FILE_FORMAT = {
+    "wav": texttospeech.AudioEncoding.LINEAR16,
+    "mp3": texttospeech.AudioEncoding.MP3
+}
+
+
+class GoogleCloudTTS(TTS):
+
+    def __init__(self, lang, config):
+        self.config = (Configuration.get().get("tts", {})
+                       .get("google_cloud", {}))
+
+        self.type = self.config.get("file_format", "wav").lower()
+        super(GoogleCloudTTS, self).__init__(lang, config,
+                                             GoogleCloudTTSValidator(self),
+                                             audio_ext=self.type)
+        self.lang = self.config.get("lang", lang)
+
+        voice_gender = self.config.get("voice_gender", "male").lower()
+
+        service_account_info = self.config.get("service_account_info", {})
+
+        credentials = (service_account.Credentials
+                       .from_service_account_info(service_account_info))
+
+        # Instantiates a client
+        self.client = texttospeech.TextToSpeechClient(credentials=credentials)
+
+        # Select the language code and the ssml voice gender
+        self.voice = texttospeech.VoiceSelectionParams(
+            language_code=self.lang, ssml_gender=VOICE_LIST.get(voice_gender)
+        )
+
+        # Select the type of audio file you want returned
+        self.audio_config = texttospeech.AudioConfig(
+            audio_encoding=OUTPUT_FILE_FORMAT.get(self.type)
+        )
+
+    def get_tts(self, sentence, audio_file):
+        with open(audio_file, "wb") as out:
+            # Set the text input to be synthesized
+            synthesis_input = texttospeech.SynthesisInput(text=sentence)
+
+            # Perform the text-to-speech request on the text input
+            # with the selected voice parameters and audio file type
+            response = self.client.synthesize_speech(
+                input=synthesis_input, voice=self.voice,
+                audio_config=self.audio_config
+            )
+
+            out.write(response.audio_content)
+        return audio_file, None  # No phonemes
+
+
+class GoogleCloudTTSValidator(TTSValidator):
+    def __init__(self, tts):
+        super(GoogleCloudTTSValidator, self).__init__(tts)
+
+    def validate_lang(self):
+        pass
+
+    def validate_connection(self):
+        try:
+            synthesis_input = texttospeech.SynthesisInput(text="Test")
+
+            self.tts.client.synthesize_speech(
+                input=synthesis_input, voice=self.tts.voice,
+                audio_config=self.tts.audio_config
+            )
+        except Exception as ex:
+            raise Exception(
+                'Error connecting to Google Cloud TTS server. '
+                'Please check your internet connection '
+                'and configuration settings', ex)
+
+    def get_tts_class(self):
+        return GoogleCloudTTS

mycroft/tts/tts.py

@@ -537,6 +537,7 @@ class TTSFactory:
     from mycroft.tts.espeak_tts import ESpeak
     from mycroft.tts.fa_tts import FATTS
     from mycroft.tts.google_tts import GoogleTTS
+    from mycroft.tts.google_cloud_tts import GoogleCloudTTS
     from mycroft.tts.mary_tts import MaryTTS
     from mycroft.tts.mimic_tts import Mimic
     from mycroft.tts.spdsay_tts import SpdSay
@@ -553,6 +554,7 @@ class TTSFactory:
         "mimic": Mimic,
         "mimic2": Mimic2,
         "google": GoogleTTS,
+        "google_cloud": GoogleCloudTTS,
         "marytts": MaryTTS,
         "fatts": FATTS,
         "festival": Festival,

mycroft/util/__init__.py

@@ -18,9 +18,6 @@
 """
 from __future__ import absolute_import
 
-import os
-
-import mycroft.audio
 from mycroft.util.format import nice_number
 from .string_utils import camel_case_split
 from .audio_utils import (play_audio_file, play_wav, play_ogg, play_mp3,

mycroft/util/format.py

@@ -35,8 +35,6 @@
                                   date_time_format, expand_options,
                                   _translate_word)
 
-from padatious.util import expand_parentheses
-
 
 def nice_number(number, lang=None, speech=True, denominators=None):
     """Format a float to human readable functions

requirements/requirements.txt

@@ -1,5 +1,6 @@
 requests>=2.20.0,<2.26.0
 gTTS>=2.2.2,<2.3.0
+google-cloud-texttospeech==2.3.0
 PyAudio==0.2.11
 pyee==8.1.0
 SpeechRecognition==3.8.1