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"""Utility for downloading Piper voices."""
import json
import logging
import shutil
from pathlib import Path
from typing import Any, Dict, Iterable, Set, Tuple, Union
from urllib.request import urlopen
from .file_hash import get_file_hash
URL_FORMAT = "https://huggingface.co/rhasspy/piper-voices/resolve/v1.0.0/{file}"
_DIR = Path(__file__).parent
_LOGGER = logging.getLogger(__name__)
_SKIP_FILES = {"MODEL_CARD"}
class VoiceNotFoundError(Exception):
pass
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)
def ensure_voice_exists(
name: str,
data_dirs: Iterable[Union[str, Path]],
download_dir: Union[str, Path],
voices_info: Dict[str, Any],
):
assert data_dirs, "No data dirs"
if name not in voices_info:
raise VoiceNotFoundError(name)
voice_info = voices_info[name]
voice_files = voice_info["files"]
files_to_download: Set[str] = set()
for data_dir in data_dirs:
data_dir = Path(data_dir)
# Check sizes/hashes
for file_path, file_info in voice_files.items():
if file_path in files_to_download:
# Already planning to download
continue
file_name = Path(file_path).name
if file_name in _SKIP_FILES:
continue
data_file_path = data_dir / file_name
_LOGGER.debug("Checking %s", data_file_path)
if not data_file_path.exists():
_LOGGER.debug("Missing %s", data_file_path)
files_to_download.add(file_path)
continue
expected_size = file_info["size_bytes"]
actual_size = data_file_path.stat().st_size
if expected_size != actual_size:
_LOGGER.warning(
"Wrong size (expected=%s, actual=%s) for %s",
expected_size,
actual_size,
data_file_path,
)
files_to_download.add(file_path)
continue
expected_hash = file_info["md5_digest"]
actual_hash = get_file_hash(data_file_path)
if expected_hash != actual_hash:
_LOGGER.warning(
"Wrong hash (expected=%s, actual=%s) for %s",
expected_hash,
actual_hash,
data_file_path,
)
files_to_download.add(file_path)
continue
if (not voice_files) and (not files_to_download):
raise ValueError(f"Unable to find or download voice: {name}")
# Download missing files
download_dir = Path(download_dir)
for file_path in files_to_download:
file_name = Path(file_path).name
if file_name in _SKIP_FILES:
continue
file_url = URL_FORMAT.format(file=file_path)
download_file_path = download_dir / file_name
download_file_path.parent.mkdir(parents=True, exist_ok=True)
_LOGGER.debug("Downloading %s to %s", file_url, download_file_path)
with urlopen(file_url) as response, open(
download_file_path, "wb"
) as download_file:
shutil.copyfileobj(response, download_file)
_LOGGER.info("Downloaded %s (%s)", download_file_path, file_url)
def find_voice(name: str, data_dirs: Iterable[Union[str, Path]]) -> Tuple[Path, Path]:
for data_dir in data_dirs:
data_dir = Path(data_dir)
onnx_path = data_dir / f"{name}.onnx"
config_path = data_dir / f"{name}.onnx.json"
if onnx_path.exists() and config_path.exists():
return onnx_path, config_path
raise ValueError(f"Missing files for voice {name}")
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