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https://github.com/Suxiaoqinx/Netease_url.git
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Suxiaoqinx
3b3383cde5
- 添加前端页面的杜比全景声音质选择选项，更新后端音质参数验证列表 - 适配杜比全景声的编码格式，将dolby音质的encodeType设为mp4 - 重构Cookie管理模块：移除独立的cookie_manager.py，将Cookie读写、解析逻辑迁移至music_api.py，简化qr_login工具实现 - 更新Dockerfile，添加ffmpeg依赖以支持音频转码处理 - 更新requirements.txt依赖配置 - 更新使用文档，调整项目文件结构说明 - 优化项目依赖，移除冗余的cookie_manager模块依赖
715 lines
24 KiB
Python
715 lines
24 KiB
Python
"""网易云音乐下载器（适配 ffmpeg 写入元数据）
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提供功能：
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- 同步 / 异步下载（本地落盘 / 内存返回）
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- 批量并发下载
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- 进度查询
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- 基于 ffmpeg 的元数据 + 封面写入（MP3/FLAC/M4A/MP4/OGG/Opus）
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设计要点：
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1. ffmpeg 路径懒加载：每次写入前重新检测，支持服务启动后中途安装
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2. 显式 -f 指定输出格式 + 临时文件保留原扩展名在最后，双保险
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3. MP4（杜比全景声 EAC3）单独分支，启用 +faststart
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4. 扩展名优先使用 API 返回的 type 字段，URL/Content-Type 兜底
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"""
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from __future__ import annotations
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import asyncio
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import os
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import re
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import shutil
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import subprocess
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import tempfile
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from dataclasses import dataclass
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from enum import Enum
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from io import BytesIO
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from pathlib import Path
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from typing import Any, Dict, List, Optional, Tuple
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import aiofiles
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import aiohttp
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import requests
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from music_api import APIException, NeteaseAPI, load_cookies
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# ============ 类型定义 ============
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class AudioFormat(Enum):
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"""音频格式枚举"""
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MP3 = "mp3"
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FLAC = "flac"
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M4A = "m4a"
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MP4 = "mp4"
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UNKNOWN = "unknown"
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class QualityLevel(Enum):
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"""音质等级枚举"""
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STANDARD = "standard"
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EXHIGH = "exhigh"
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LOSSLESS = "lossless"
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HIRES = "hires"
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SKY = "sky"
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JYEFFECT = "jyeffect"
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JYMASTER = "jymaster"
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DOLBY = "dolby"
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@dataclass
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class MusicInfo:
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"""音乐信息数据类"""
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id: int
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name: str
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artists: str
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album: str
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pic_url: str
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duration: int
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track_number: int
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download_url: str
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file_type: str
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file_size: int
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quality: str
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lyric: str = ""
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tlyric: str = ""
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@dataclass
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class DownloadResult:
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"""下载结果数据类"""
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success: bool
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file_path: Optional[str] = None
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file_size: int = 0
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error_message: str = ""
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music_info: Optional[MusicInfo] = None
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class DownloadException(Exception):
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"""下载异常类"""
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pass
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# ============ 工具映射表 ============
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# API 返回的 type -> 文件扩展名
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API_TYPE_TO_EXT = {
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"mp3": ".mp3",
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"flac": ".flac",
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"m4a": ".m4a",
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"mp4": ".mp4",
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"ogg": ".ogg",
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"opus": ".opus",
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}
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# 文件扩展名 -> ffmpeg 输出 muxer 名称
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EXT_TO_FFMPEG_FORMAT = {
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".mp3": "mp3",
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".flac": "flac",
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".m4a": "mp4",
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".mp4": "mp4",
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".ogg": "ogg",
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".opus": "opus",
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}
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# 支持元数据写入的扩展名
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METADATA_FORMATS = {".mp3", ".flac", ".m4a", ".mp4", ".ogg", ".opus"}
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# ============ 核心实现 ============
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class MusicDownloader:
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"""网易云音乐下载器
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用法:
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downloader = MusicDownloader(download_dir="downloads")
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result = downloader.download_music_file(music_id, quality="lossless")
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"""
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def __init__(
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self,
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download_dir: str = "downloads",
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max_concurrent: int = 3,
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ffmpeg_path: Optional[str] = None,
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):
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"""
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Args:
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download_dir: 下载目录
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max_concurrent: 最大并发下载数
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ffmpeg_path: ffmpeg 可执行文件路径，为 None 时启动时检测一次
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"""
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self.download_dir = Path(download_dir)
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self.download_dir.mkdir(exist_ok=True)
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self.max_concurrent = max_concurrent
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self.api = NeteaseAPI()
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# ffmpeg 路径缓存：启动时检测一次，写入时还会再懒加载一次
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self.ffmpeg_path = ffmpeg_path or shutil.which("ffmpeg")
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if not self.ffmpeg_path:
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print("警告: 未检测到 ffmpeg，写入元数据功能将不可用")
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# ----------- 工具方法 -----------
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def _sanitize_filename(self, filename: str) -> str:
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"""清理文件名非法字符"""
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filename = re.sub(r'[<>:"/\\|?*]', '_', filename)
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filename = filename.strip(' .')
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if len(filename) > 200:
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filename = filename[:200]
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return filename or "unknown"
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def _determine_file_extension(
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self,
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url: str,
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content_type: str = "",
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api_type: str = "",
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) -> str:
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"""确定文件扩展名
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优先级: API 返回的 type > URL 后缀 > HTTP Content-Type > 默认 mp3
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"""
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api_type = (api_type or "").lower()
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if api_type in API_TYPE_TO_EXT:
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return API_TYPE_TO_EXT[api_type]
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url_lower = url.lower()
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if ".flac" in url_lower:
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return ".flac"
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if ".mp3" in url_lower:
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return ".mp3"
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if ".m4a" in url_lower or ".mp4" in url_lower:
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return ".m4a"
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content_type = (content_type or "").lower()
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if "flac" in content_type:
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return ".flac"
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if "mpeg" in content_type or "mp3" in content_type:
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return ".mp3"
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if "mp4" in content_type or "m4a" in content_type:
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return ".m4a"
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return ".mp3"
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def _resolve_ffmpeg(self) -> Optional[str]:
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"""懒加载解析 ffmpeg 路径
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每次写入前调用一次：若启动时未检测到，但中途已安装，下一次就能用。
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"""
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if self.ffmpeg_path:
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return self.ffmpeg_path
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path = shutil.which("ffmpeg")
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if path:
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self.ffmpeg_path = path # 回写缓存
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return path
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# ----------- 信息获取 -----------
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def get_music_info(self, music_id: int, quality: str = "standard") -> MusicInfo:
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"""获取音乐详细信息（同步）"""
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try:
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cookies = load_cookies()
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url_result = self.api.get_song_url(music_id, quality, cookies)
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print(url_result)
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if not url_result.get("data") or not url_result["data"]:
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raise DownloadException(f"无法获取音乐ID {music_id} 的播放链接")
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song_data = url_result["data"][0]
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download_url = song_data.get("url", "")
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if not download_url:
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raise DownloadException(f"音乐ID {music_id} 无可用的下载链接")
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detail_result = self.api.get_song_detail(music_id)
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if not detail_result.get("songs") or not detail_result["songs"]:
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raise DownloadException(f"无法获取音乐ID {music_id} 的详细信息")
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song_detail = detail_result["songs"][0]
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lyric_result = self.api.get_lyric(music_id, cookies)
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lyric = lyric_result.get("lrc", {}).get("lyric", "") if lyric_result else ""
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tlyric = lyric_result.get("tlyric", {}).get("lyric", "") if lyric_result else ""
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artists = "/".join(a["name"] for a in song_detail.get("ar", []))
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return MusicInfo(
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id=music_id,
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name=song_detail.get("name", "未知歌曲"),
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artists=artists or "未知艺术家",
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album=song_detail.get("al", {}).get("name", "未知专辑"),
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pic_url=song_detail.get("al", {}).get("picUrl", ""),
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duration=song_detail.get("dt", 0) // 1000,
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track_number=song_detail.get("no", 0),
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download_url=download_url,
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file_type=song_data.get("type", "mp3").lower(),
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file_size=song_data.get("size", 0),
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quality=quality,
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lyric=lyric,
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tlyric=tlyric,
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)
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except APIException as e:
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raise DownloadException(f"API调用失败: {e}")
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except Exception as e:
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raise DownloadException(f"获取音乐信息时发生错误: {e}")
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# ----------- 文件路径 -----------
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def _build_file_path(self, music_info: MusicInfo) -> Path:
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"""根据 MusicInfo 生成下载文件路径"""
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filename = f"{music_info.artists} - {music_info.name}"
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safe = self._sanitize_filename(filename)
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ext = self._determine_file_extension(
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music_info.download_url,
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api_type=music_info.file_type,
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)
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return self.download_dir / f"{safe}{ext}"
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# ----------- 下载（同步） -----------
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def download_music_file(
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self,
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music_id: int,
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quality: str = "standard",
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) -> DownloadResult:
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"""同步下载音乐到本地"""
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try:
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music_info = self.get_music_info(music_id, quality)
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file_path = self._build_file_path(music_info)
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# 已存在则直接返回
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if file_path.exists():
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return DownloadResult(
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success=True,
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file_path=str(file_path),
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file_size=file_path.stat().st_size,
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music_info=music_info,
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)
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# 流式下载
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response = requests.get(music_info.download_url, stream=True, timeout=30)
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response.raise_for_status()
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with open(file_path, "wb") as f:
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for chunk in response.iter_content(chunk_size=8192):
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if chunk:
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f.write(chunk)
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# 写入元数据（失败不影响主流程）
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self._write_metadata_with_ffmpeg(file_path, music_info)
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return DownloadResult(
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success=True,
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file_path=str(file_path),
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file_size=file_path.stat().st_size,
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music_info=music_info,
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)
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except DownloadException:
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raise
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except requests.RequestException as e:
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return DownloadResult(success=False, error_message=f"下载请求失败: {e}")
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except Exception as e:
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return DownloadResult(success=False, error_message=f"下载过程中发生错误: {e}")
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# ----------- 下载（异步） -----------
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async def download_music_file_async(
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self,
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music_id: int,
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quality: str = "standard",
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) -> DownloadResult:
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"""异步下载音乐到本地"""
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try:
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music_info = self.get_music_info(music_id, quality)
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file_path = self._build_file_path(music_info)
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if file_path.exists():
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return DownloadResult(
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success=True,
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file_path=str(file_path),
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file_size=file_path.stat().st_size,
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music_info=music_info,
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)
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async with aiohttp.ClientSession() as session:
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async with session.get(music_info.download_url) as resp:
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resp.raise_for_status()
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async with aiofiles.open(file_path, "wb") as f:
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async for chunk in resp.content.iter_chunked(8192):
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await f.write(chunk)
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self._write_metadata_with_ffmpeg(file_path, music_info)
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return DownloadResult(
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success=True,
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file_path=str(file_path),
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file_size=file_path.stat().st_size,
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music_info=music_info,
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)
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except DownloadException:
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raise
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except aiohttp.ClientError as e:
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return DownloadResult(success=False, error_message=f"异步下载请求失败: {e}")
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except Exception as e:
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return DownloadResult(success=False, error_message=f"异步下载过程中发生错误: {e}")
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# ----------- 下载到内存 -----------
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def download_music_to_memory(
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self,
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music_id: int,
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quality: str = "standard",
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) -> Tuple[bool, BytesIO, MusicInfo]:
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"""下载音乐到内存"""
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try:
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music_info = self.get_music_info(music_id, quality)
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resp = requests.get(music_info.download_url, timeout=30)
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resp.raise_for_status()
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return True, BytesIO(resp.content), music_info
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except DownloadException:
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raise
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except requests.RequestException as e:
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raise DownloadException(f"下载到内存失败: {e}")
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except Exception as e:
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raise DownloadException(f"内存下载过程中发生错误: {e}")
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# ----------- 批量下载 -----------
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async def download_batch_async(
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self,
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music_ids: List[int],
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quality: str = "standard",
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) -> List[DownloadResult]:
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"""批量并发下载"""
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semaphore = asyncio.Semaphore(self.max_concurrent)
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async def _one(music_id: int) -> DownloadResult:
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async with semaphore:
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return await self.download_music_file_async(music_id, quality)
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tasks = [_one(mid) for mid in music_ids]
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results = await asyncio.gather(*tasks, return_exceptions=True)
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processed: List[DownloadResult] = []
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for i, r in enumerate(results):
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if isinstance(r, Exception):
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processed.append(DownloadResult(
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success=False,
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error_message=f"下载音乐ID {music_ids[i]} 时发生异常: {r}",
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))
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else:
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processed.append(r)
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return processed
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# ----------- 进度查询 -----------
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def get_download_progress(
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self,
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music_id: int,
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quality: str = "standard",
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) -> Dict[str, Any]:
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"""查询下载进度"""
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try:
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music_info = self.get_music_info(music_id, quality)
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file_path = self._build_file_path(music_info)
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if file_path.exists():
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current_size = file_path.stat().st_size
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progress = (
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current_size / music_info.file_size * 100
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if music_info.file_size > 0
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else 0
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)
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return {
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"music_id": music_id,
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"filename": file_path.name,
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"total_size": music_info.file_size,
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"current_size": current_size,
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"progress": min(progress, 100),
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"completed": current_size >= music_info.file_size,
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}
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return {
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"music_id": music_id,
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"filename": file_path.name,
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"total_size": music_info.file_size,
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"current_size": 0,
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"progress": 0,
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"completed": False,
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}
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except Exception as e:
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return {
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"music_id": music_id,
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"error": str(e),
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"progress": 0,
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"completed": False,
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}
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# ============ ffmpeg 元数据写入（核心） ============
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def _write_metadata_with_ffmpeg(
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self,
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file_path: Path,
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music_info: MusicInfo,
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) -> bool:
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"""使用 ffmpeg 写入音频元数据
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处理: title/artist/album/track + 封面（如果是 mp3/flac/m4a/mp4）
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Returns:
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是否写入成功（失败不影响主流程）
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"""
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ffmpeg_path = self._resolve_ffmpeg()
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if not ffmpeg_path:
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print("跳过元数据写入: ffmpeg 不可用")
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return False
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file_ext = file_path.suffix.lower()
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if file_ext not in METADATA_FORMATS:
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print(f"跳过元数据写入: 不支持的格式 {file_ext}")
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return False
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if not file_path.exists():
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print(f"跳过元数据写入: 文件不存在 {file_path}")
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return False
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# 临时输出文件：保留原扩展名在最后，便于 ffmpeg 识别 muxer
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# 例: 艾辰 - 错位时空.tagging.flac
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tmp_output = file_path.with_name(
|
||
file_path.stem + ".tagging" + file_path.suffix
|
||
)
|
||
# 临时封面文件
|
||
cover_tmp: Optional[str] = None
|
||
|
||
try:
|
||
# 下载封面到临时文件
|
||
if music_info.pic_url:
|
||
try:
|
||
pic_resp = requests.get(music_info.pic_url, timeout=10)
|
||
pic_resp.raise_for_status()
|
||
fd, cover_tmp = tempfile.mkstemp(suffix=".jpg", dir=str(self.download_dir))
|
||
os.close(fd)
|
||
with open(cover_tmp, "wb") as cf:
|
||
cf.write(pic_resp.content)
|
||
except Exception as e:
|
||
print(f"封面下载失败，跳过封面写入: {e}")
|
||
cover_tmp = None
|
||
|
||
# 构造 ffmpeg 命令
|
||
# 顺序: global opts -> -i input1 -> -i input2 -> metadata -> mapping -> -f format -> output
|
||
output_format = EXT_TO_FFMPEG_FORMAT.get(file_ext, "")
|
||
cmd: List[str] = [
|
||
ffmpeg_path, "-y", "-loglevel", "error",
|
||
"-i", str(file_path),
|
||
]
|
||
if cover_tmp:
|
||
cmd += ["-i", cover_tmp]
|
||
|
||
# 通用元数据
|
||
meta = {
|
||
"title": music_info.name,
|
||
"artist": music_info.artists,
|
||
"album": music_info.album,
|
||
"album_artist": music_info.artists,
|
||
"comment": "Downloaded from Netease Cloud Music",
|
||
}
|
||
if music_info.track_number > 0:
|
||
meta["track"] = str(music_info.track_number)
|
||
meta["tracktotal"] = str(music_info.track_number)
|
||
for k, v in meta.items():
|
||
if v:
|
||
cmd += ["-metadata", f"{k}={v}"]
|
||
|
||
# 各格式的 mapping / 编码选项
|
||
cmd += self._build_format_args(file_ext, has_cover=bool(cover_tmp))
|
||
|
||
# -f 必须放在所有 -i 之后（作为 output option）才生效
|
||
if output_format:
|
||
cmd += ["-f", output_format]
|
||
cmd.append(str(tmp_output))
|
||
|
||
# 执行
|
||
result = subprocess.run(
|
||
cmd,
|
||
capture_output=True,
|
||
text=True,
|
||
timeout=120,
|
||
encoding="utf-8",
|
||
errors="ignore",
|
||
)
|
||
|
||
if result.returncode == 0 and tmp_output.exists():
|
||
# 原子替换原文件
|
||
shutil.move(str(tmp_output), str(file_path))
|
||
return True
|
||
|
||
print(
|
||
f"ffmpeg 写入元数据失败: "
|
||
f"{(result.stderr or result.stdout or '').strip()}"
|
||
)
|
||
return False
|
||
|
||
except subprocess.TimeoutExpired:
|
||
print("ffmpeg 执行超时")
|
||
return False
|
||
except FileNotFoundError:
|
||
print(f"ffmpeg 可执行文件未找到: {ffmpeg_path}")
|
||
return False
|
||
except Exception as e:
|
||
print(f"ffmpeg 写入元数据异常: {e}")
|
||
return False
|
||
finally:
|
||
# 清理封面临时文件
|
||
if cover_tmp and os.path.exists(cover_tmp):
|
||
try:
|
||
os.unlink(cover_tmp)
|
||
except OSError:
|
||
pass
|
||
# 清理可能残留的临时输出
|
||
if tmp_output.exists():
|
||
try:
|
||
tmp_output.unlink()
|
||
except OSError:
|
||
pass
|
||
|
||
def _build_format_args(self, file_ext: str, has_cover: bool) -> List[str]:
|
||
"""根据文件格式构造 mapping / 编码参数"""
|
||
if file_ext == ".mp3":
|
||
# MP3: 封面通过 ID3v2 APIC 帧写入
|
||
if has_cover:
|
||
return [
|
||
"-map", "0:a", "-map", "1:v",
|
||
"-c:a", "copy", "-c:v", "copy",
|
||
"-id3v2_version", "3",
|
||
"-metadata:s:v", "title=Album cover",
|
||
"-metadata:s:v", "comment=Cover (front)",
|
||
]
|
||
return ["-map", "0:a", "-c:a", "copy", "-id3v2_version", "3"]
|
||
|
||
if file_ext == ".flac":
|
||
# FLAC: 原生支持封面
|
||
if has_cover:
|
||
return [
|
||
"-map", "0", "-map", "1",
|
||
"-c", "copy",
|
||
"-disposition:v:0", "attached_pic",
|
||
]
|
||
return ["-map", "0", "-c", "copy"]
|
||
|
||
if file_ext == ".m4a":
|
||
# M4A: AAC 音频 + mp4 容器
|
||
if has_cover:
|
||
return [
|
||
"-map", "0:a", "-map", "1:v",
|
||
"-c", "copy",
|
||
"-disposition:v:0", "attached_pic",
|
||
"-metadata:s:v", "title=Album cover",
|
||
"-metadata:s:v", "comment=Cover (front)",
|
||
]
|
||
return ["-map", "0:a", "-c:a", "copy"]
|
||
|
||
if file_ext == ".mp4":
|
||
# MP4 (杜比全景声 EAC3 / 其它 mp4 容器音频)
|
||
# 杜比文件通常无视频流，封面作为 video stream 注入；+faststart 让 moov 在文件头
|
||
if has_cover:
|
||
return [
|
||
"-map", "0", "-map", "1:v",
|
||
"-c", "copy",
|
||
"-disposition:v:0", "attached_pic",
|
||
"-metadata:s:v", "title=Album cover",
|
||
"-metadata:s:v", "comment=Cover (front)",
|
||
"-movflags", "+faststart",
|
||
]
|
||
return ["-map", "0", "-c", "copy", "-movflags", "+faststart"]
|
||
|
||
if file_ext in (".ogg", ".opus"):
|
||
if has_cover:
|
||
return [
|
||
"-map", "0:a", "-map", "1:v",
|
||
"-c:a", "copy", "-c:v", "copy",
|
||
]
|
||
return ["-map", "0:a", "-c:a", "copy"]
|
||
|
||
# 默认
|
||
if has_cover:
|
||
return ["-map", "0:a", "-map", "1:v", "-c", "copy"]
|
||
return ["-map", "0:a", "-c:a", "copy"]
|
||
|
||
|
||
# ============ CLI 入口 ============
|
||
|
||
if __name__ == "__main__":
|
||
import sys
|
||
from dataclasses import asdict
|
||
|
||
downloader = MusicDownloader()
|
||
|
||
# 无参数：打印模块信息
|
||
if len(sys.argv) < 2:
|
||
print("网易云音乐下载器")
|
||
print(f"ffmpeg 路径: {downloader.ffmpeg_path or '未找到'}")
|
||
print("支持的音质: standard / exhigh / lossless / hires / sky / jyeffect / jymaster / dolby")
|
||
print("支持的功能: 同步/异步/批量下载、内存下载、进度查询、ffmpeg 元数据写入")
|
||
print()
|
||
print("用法:")
|
||
print(" python music_downloader.py <music_id> [quality] # 仅打印信息")
|
||
print(" python music_downloader.py <music_id> [quality] --download # 打印并下载")
|
||
print()
|
||
print("示例:")
|
||
print(" python music_downloader.py 123456")
|
||
print(" python music_downloader.py 123456 lossless")
|
||
print(" python music_downloader.py 123456 hires --download")
|
||
sys.exit(0)
|
||
|
||
# 解析参数
|
||
try:
|
||
music_id = int(sys.argv[1])
|
||
except ValueError:
|
||
print(f"错误: music_id 必须是整数，收到: {sys.argv[1]!r}")
|
||
sys.exit(1)
|
||
|
||
quality = sys.argv[2] if len(sys.argv) > 2 and not sys.argv[2].startswith("--") else "lossless"
|
||
do_download = "--download" in sys.argv
|
||
|
||
# 打印音乐信息
|
||
try:
|
||
info = downloader.get_music_info(music_id, quality)
|
||
except DownloadException as e:
|
||
print(f"获取音乐信息失败: {e}")
|
||
sys.exit(1)
|
||
|
||
print()
|
||
print("=" * 70)
|
||
print(f"音乐信息 (ID={info.id}, quality={info.quality})")
|
||
print("=" * 70)
|
||
|
||
info_dict = asdict(info)
|
||
for key, value in info_dict.items():
|
||
# 歌词太长，只显示行数
|
||
if key in ("lyric", "tlyric"):
|
||
lines = [ln for ln in (value or "").splitlines() if ln.strip()]
|
||
preview = " | ".join(lines[:2])[:80] if lines else "(空)"
|
||
print(f" {key:<14}: {len(lines)} 行 预览: {preview}{'...' if len(lines) > 2 else ''}")
|
||
continue
|
||
# URL 类字段：完整展示（如果终端窄可换行）
|
||
if key in ("download_url", "pic_url"):
|
||
print(f" {key:<14}: {value}")
|
||
continue
|
||
print(f" {key:<14}: {value}")
|
||
|
||
print("=" * 70)
|
||
|
||
# 可选：触发下载
|
||
if do_download:
|
||
print()
|
||
print("开始下载...")
|
||
result = downloader.download_music_file(music_id, quality)
|
||
if result.success:
|
||
print(f"下载完成: {result.file_path} ({result.file_size} 字节)")
|
||
else:
|
||
print(f"下载失败: {result.error_message}")
|
||
sys.exit(1)
|