INNER CODE UNIT · Python

_get_extractor

liyupi/free-video-downloader · backend/api_summarize.py:57

def _get_extractor():
    """延迟初始化 SubtitleExtractor"""
    from summarizer import SubtitleExtractor
    if not hasattr(_get_extractor, "_instance"):
        _get_extractor._instance = SubtitleExtractor()
    return _get_extractor._instance


@router.post("/summarize", response_class=EventSourceResponse)
async def summarize_video(req: SummarizeRequest, user: dict | None = Depends(get_optional_user)) -> AsyncIterable[ServerSentEvent]:
    """
    AI 视频总结（SSE 流式）
    事件类型: subtitle / summary / mindmap / done / error / quota
    """
    allowed, remaining, message = _check_summary_permission(user)
    if not allowed:
        yield ServerSentEvent(
            raw_data=json.dumps({"message": message, "need_login": user is None, "need_vip": user is not None}, ensure_ascii=False),

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