FF Plug - 可扩展的视频处理框架

# 导入必要的模块
from typing import Dict
from utils.plugin_system.interface import PluginInterface
from utils.plugin_system.types import PluginInfo
from enum import Enum
from utils.ffmpeg_handler import FFmpegHandler
import os
from datetime import datetime

# 定义插件类型枚举
class PluginType(Enum):
    PYTHON = "python"
    DLL = "dll"

# 示例插件类，继承自PluginInterface接口
class DemoPlugin(PluginInterface):
    def __init__(self):
        # 初始化插件基本信息
        self.name = "演示插件"
        self.description = "这是一个用于测试的示例插件，支持自定义FFmpeg命令"
        self.version = "1.0.0"
        self.author = "开发者"
        self.plugin_type = PluginType.PYTHON
        self.ffmpeg = FFmpegHandler()
    
    def get_info(self) -> Dict:
        # 返回插件的基本信息
        return {
            "name": self.name,
            "description": self.description,
            "version": self.version,
            "author": self.author,
            "type": self.plugin_type.value
        }
    
    def _get_custom_command(self, input_path: str, output_file: str) -> str:
        # 从配置文件读取自定义FFmpeg命令
        plugin_dir = os.path.dirname(os.path.abspath(__file__))
        config_file = os.path.join(plugin_dir, "demo_plugin_ffmpeg.txt")
        
        try:
            if os.path.exists(config_file):
                with open(config_file, 'r', encoding='utf-8') as f:
                    command_template = f.readline().strip()
                    if command_template:
                        # 替换命令模板中的输入输出占位符
                        return command_template.replace('{input}', input_path).replace('{output}', output_file)
        except Exception as e:
            print(f"读取配置文件失败: {str(e)}")
        
        # 默认的FFmpeg命令：直接复制视频和音频流
        return f'-i "{input_path}" -c:v copy -c:a copy -progress pipe:1 -nostats "{output_file}"'
    
    def process_video(self, input_path: str, output_path: str, progress_callback=None) -> bool:
        # 视频处理的主要方法
        try:
            # 生成带时间戳的输出文件名
            filename, ext = os.path.splitext(os.path.basename(input_path))
            timestamp = datetime.now().strftime('%Y%m%d_%H%M%S')
            output_file = os.path.join(
                output_path, 
                f"processed_{filename}_{timestamp}{ext}"
            )
            
            # 创建输出目录
            os.makedirs(output_path, exist_ok=True)
            
            # 验证输入文件
            if not os.path.exists(input_path):
                print(f"输入文件不存在: {input_path}")
                return False
            
            # 获取并执行FFmpeg命令
            command = self._get_custom_command(input_path, output_file)
            return self.ffmpeg.execute_command(command, progress_callback)
            
        except Exception as e:
            print(f"处理失败: {str(e)}")
            import traceback
            print(traceback.format_exc())
            return False