Update voices.json and add --update-voices

src/python_run/piper/__main__.py

@@ -71,6 +71,12 @@ def main() -> None:
         help="Directory to download voices into (default: first data dir)",
     )
     #
+    parser.add_argument(
+        "--update-voices",
+        action="store_true",
+        help="Download latest voices.json during startup",
+    )
+    #
     parser.add_argument(
         "--debug", action="store_true", help="Print DEBUG messages to console"
     )
@@ -86,7 +92,7 @@ def main() -> None:
     model_path = Path(args.model)
     if not model_path.exists():
         # Load voice info
-        voices_info = get_voices()
+        voices_info = get_voices(args.download_dir, update_voices=args.update_voices)
 
         # Resolve aliases for backwards compatibility with old voice names
         aliases_info: Dict[str, Any] = {}

src/python_run/piper/download.py

@@ -20,9 +20,28 @@ class VoiceNotFoundError(Exception):
     pass
 
 
-def get_voices() -> Dict[str, Any]:
-    """Loads available voices from embedded JSON file."""
-    with open(_DIR / "voices.json", "r", encoding="utf-8") as voices_file:
+def get_voices(
+    download_dir: Union[str, Path], update_voices: bool = False
+) -> Dict[str, Any]:
+    """Loads available voices from downloaded or embedded JSON file."""
+    download_dir = Path(download_dir)
+    voices_download = download_dir / "voices.json"
+
+    if update_voices:
+        # Download latest voices.json
+        voices_url = URL_FORMAT.format(file="voices.json")
+        _LOGGER.debug("Downloading %s to %s", voices_url, voices_download)
+        with urlopen(voices_url) as response, open(
+            voices_download, "wb"
+        ) as download_file:
+            shutil.copyfileobj(response, download_file)
+
+    # Prefer downloaded file to embedded
+    voices_embedded = _DIR / "voices.json"
+    voices_path = voices_download if voices_download.exists() else voices_embedded
+
+    _LOGGER.debug("Loading %s", voices_path)
+    with open(voices_path, "r", encoding="utf-8") as voices_file:
         return json.load(voices_file)
 
 

src/python_run/setup.py

@@ -19,7 +19,7 @@ data_files = [module_dir / "voices.json"]
 
 setup(
     name="piper-tts",
-    version="1.1.0",
+    version="1.2.0",
     description="A fast, local neural text to speech system that sounds great and is optimized for the Raspberry Pi 4.",
     url="http://github.com/rhasspy/piper",
     author="Michael Hansen",