Migrate tts (#22403)

* Migrate tts

* Migrate tts tests

* Update requirements

* Fix path to demo mp3

homeassistant/components/picotts/tts.py

@@ -0,0 +1,73 @@
+"""
+Support for the Pico TTS speech service.
+
+For more details about this component, please refer to the documentation at
+https://home-assistant.io/components/tts.picotts/
+"""
+import logging
+import os
+import shutil
+import subprocess
+import tempfile
+
+import voluptuous as vol
+
+from . import CONF_LANG, PLATFORM_SCHEMA, Provider
+
+_LOGGER = logging.getLogger(__name__)
+
+SUPPORT_LANGUAGES = ['en-US', 'en-GB', 'de-DE', 'es-ES', 'fr-FR', 'it-IT']
+
+DEFAULT_LANG = 'en-US'
+
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
+    vol.Optional(CONF_LANG, default=DEFAULT_LANG): vol.In(SUPPORT_LANGUAGES),
+})
+
+
+def get_engine(hass, config):
+    """Set up Pico speech component."""
+    if shutil.which("pico2wave") is None:
+        _LOGGER.error("'pico2wave' was not found")
+        return False
+    return PicoProvider(config[CONF_LANG])
+
+
+class PicoProvider(Provider):
+    """The Pico TTS API provider."""
+
+    def __init__(self, lang):
+        """Initialize Pico TTS provider."""
+        self._lang = lang
+        self.name = 'PicoTTS'
+
+    @property
+    def default_language(self):
+        """Return the default language."""
+        return self._lang
+
+    @property
+    def supported_languages(self):
+        """Return list of supported languages."""
+        return SUPPORT_LANGUAGES
+
+    def get_tts_audio(self, message, language, options=None):
+        """Load TTS using pico2wave."""
+        with tempfile.NamedTemporaryFile(suffix='.wav', delete=False) as tmpf:
+            fname = tmpf.name
+
+        cmd = ['pico2wave', '--wave', fname, '-l', language, message]
+        subprocess.call(cmd)
+        data = None
+        try:
+            with open(fname, 'rb') as voice:
+                data = voice.read()
+        except OSError:
+            _LOGGER.error("Error trying to read %s", fname)
+            return (None, None)
+        finally:
+            os.remove(fname)
+
+        if data:
+            return ("wav", data)
+        return (None, None)