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108 lines
3.5 KiB
108 lines
3.5 KiB
#!/usr/bin/env python3
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"""下载 mv-creator 内置风格预设图到本地缓存。
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用法：
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python3 download_style_presets.py <cache_dir>
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python3 download_style_presets.py <cache_dir> --style cinematic
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也可作为模块导入，调用 ensure_style_presets(cache_dir) 获取本地路径。
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CDN 源仅在本脚本内部使用，不对外暴露。下载到本地后，所有调用方
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（render_preview.py / 生图工具的 image_paths）都使用本地路径。
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"""
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import argparse
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import sys
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import urllib.request
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from pathlib import Path
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# Internal CDN source — do not reference these URLs from markdown or other code.
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_CDN_BASE = "https://cdn.hailuoai.com/hailuo-video-web/public_assets"
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_PRESETS = {
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"cinematic": ["01_highway.png", "02_bar.png", "03_canyon.png", "04_starry.png"],
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"oil-painting": ["01_highway.png", "02_bar.png", "03_prairie.png", "04_campfire.png"],
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"noir-illustration": ["01_highway.png", "02_bar.png", "03_stage.png"],
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}
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PRESET_STYLES: tuple[str, ...] = tuple(_PRESETS.keys())
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def _fetch_one(style_id: str, filename: str, cache_dir: Path) -> Path | None:
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"""Download a single preset image; skip if already cached.
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Returns the local path on success (cached or freshly downloaded), or None
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if the download failed.
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"""
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out_dir = cache_dir / style_id
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out_dir.mkdir(parents=True, exist_ok=True)
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local = out_dir / filename
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if local.exists():
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return local
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url = f"{_CDN_BASE}/{style_id}/{filename}"
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try:
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urllib.request.urlretrieve(url, local)
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except Exception as exc: # noqa: BLE001 — log and continue
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print(f"WARN: failed to download {url}: {exc}", file=sys.stderr)
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return None
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return local
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def ensure_style_presets(
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cache_dir: Path,
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styles: tuple[str, ...] | None = None,
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) -> dict[str, list[Path]]:
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"""Ensure preset images exist under cache_dir; download missing ones.
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Args:
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cache_dir: Directory to cache preset images. Created if absent.
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styles: Optional subset of style ids to ensure. Defaults to all known.
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Returns:
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{style_id: [local_path, ...]} — only includes styles with at least one
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successfully cached image.
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"""
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targets = styles or PRESET_STYLES
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result: dict[str, list[Path]] = {}
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for style_id in targets:
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filenames = _PRESETS.get(style_id)
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if not filenames:
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print(f"WARN: unknown style id: {style_id}", file=sys.stderr)
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continue
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paths: list[Path] = []
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for fn in filenames:
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local = _fetch_one(style_id, fn, cache_dir)
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if local is not None:
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paths.append(local)
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if paths:
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result[style_id] = paths
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return result
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def main() -> int:
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parser = argparse.ArgumentParser(description="Download mv-creator built-in style presets")
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parser.add_argument("cache_dir", type=Path, help="Local cache directory")
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parser.add_argument(
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"--style",
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action="append",
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choices=PRESET_STYLES,
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help="Only download specific style(s); may be passed multiple times",
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)
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args = parser.parse_args()
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cache_dir: Path = args.cache_dir.resolve()
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selected = tuple(args.style) if args.style else None
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result = ensure_style_presets(cache_dir, styles=selected)
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if not result:
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print("ERROR: no presets cached", file=sys.stderr)
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return 1
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for style_id, paths in result.items():
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print(f"{style_id}: {len(paths)} files")
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for p in paths:
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print(f" {p}")
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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