118 lines
3.9 KiB
Python
118 lines
3.9 KiB
Python
import os
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import uuid
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import subprocess
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import requests
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import tempfile
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import shutil
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import logging
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import threading
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import time
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from contextlib import contextmanager
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UPLOAD_FOLDER = 'temp_files'
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@contextmanager
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def temp_directory(dir=None):
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temp_dir = tempfile.mkdtemp(dir=dir)
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try:
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yield temp_dir
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finally:
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# 不再在这里自动删除临时目录
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pass
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def download_file(url, temp_dir):
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try:
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headers = {
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'User-Agent': 'Mozilla/5.0',
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'Accept': '*/*'
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}
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logging.info(f"开始从URL下载文件: {url}")
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response = requests.get(url, headers=headers, stream=True, timeout=30)
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response.raise_for_status()
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file_path = os.path.join(temp_dir, 'input_audio')
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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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file_size = os.path.getsize(file_path)
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if file_size < 1024:
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error_msg = f"下载的文件太小(仅{file_size}字节)，可能无效"
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logging.error(error_msg)
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raise Exception(error_msg)
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logging.info(f"文件下载成功，保存到: {file_path} (大小: {file_size}字节)")
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return file_path
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except Exception as e:
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logging.error(f"从 {url} 下载文件时出错: {e}")
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raise
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def execute_ffmpeg(input_path, output_path, ffmpeg_args):
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try:
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filtered_args = [arg for arg in ffmpeg_args if not (arg.lower() in ['-i', '-input'] or
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(ffmpeg_args.index(arg) > 0 and ffmpeg_args[ffmpeg_args.index(arg) - 1].lower() == '-i'))]
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cmd = ['lib/ffmpeg/bin/ffmpeg', '-i', input_path] + filtered_args + [output_path]
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logging.info(f"执行FFmpeg命令: {' '.join(cmd)}")
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result = subprocess.run(
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cmd,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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universal_newlines=True,
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encoding='utf-8',
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errors='replace'
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)
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if result.returncode != 0:
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error_msg = f"FFmpeg处理失败，返回码: {result.returncode}, 错误: {result.stderr}"
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logging.error(error_msg)
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raise Exception(error_msg)
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logging.info("FFmpeg处理成功完成")
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return True
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except Exception as e:
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logging.error(f"执行FFmpeg时出错: {e}")
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raise
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def process_ffmpeg(data, file_registry, file_lock):
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try:
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temp_dir = tempfile.mkdtemp(dir=UPLOAD_FOLDER)
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logging.info(f"创建临时目录: {temp_dir}")
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input_url = data.get('input_url')
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ffmpeg_args = data.get('args', [])
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input_path = download_file(input_url, temp_dir)
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output_id = str(uuid.uuid4())[:8]
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output_format = data.get('output_format', 'mp4')
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output_filename = f"{output_id}.{output_format}"
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output_path = os.path.join(temp_dir, output_filename)
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execute_ffmpeg(input_path, output_path, ffmpeg_args)
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with file_lock:
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file_registry[output_id] = {
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'path': os.path.abspath(output_path),
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'filename': output_filename,
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'last_access': time.time(),
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'download_count': 0
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}
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logging.info(f"已注册新文件ID: {output_id}, 路径: {output_path}")
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# 返回临时目录路径以便在主函数中删除
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return {
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'status': 'success',
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'download_url': f"http://ffmpeg.liulikeji.cn/download/{output_id}/{output_filename}",
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'file_id': output_id,
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'temp_dir': temp_dir # 返回临时目录路径
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}
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except Exception as e:
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logging.error(f"处理过程中出错: {e}")
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return {'error': str(e)}
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