140 lines
5.2 KiB
Python
140 lines
5.2 KiB
Python
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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内存优化配置文件
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用于配置WebSocket视频流的内存使用参数
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"""
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# ==================== 前端内存优化配置 ====================
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# 帧率控制
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MAX_FPS = 15 # 最大帧率，降低可减少内存使用
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FRAME_SKIP_THRESHOLD = 2 # 跳帧阈值，每N+1帧显示1帧
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# 内存监控
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MEMORY_CHECK_INTERVAL_MS = 10000 # 内存检查间隔（毫秒）
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MAX_MEMORY_USAGE_PERCENT = 80 # 内存使用率阈值（%），超过则自动清理
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# 图像缓存
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ENABLE_IMAGE_CACHE = True # 是否启用图像缓存优化
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FORCE_GC_INTERVAL = 100 # 强制垃圾回收间隔（帧数）
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# ==================== 后端内存优化配置 ====================
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# 帧处理
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BACKEND_FRAME_SKIP_RATIO = 3 # 后端跳帧比例，每N帧处理1帧
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MAX_FRAME_WIDTH = 320 # 最大帧宽度
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MAX_FRAME_HEIGHT = 240 # 最大帧高度
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# 内存限制
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MAX_BACKEND_MEMORY_MB = 100 # 后端最大内存使用（MB）
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BACKEND_MEMORY_CHECK_INTERVAL = 50 # 后端内存检查间隔（帧数）
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# JPEG编码优化
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JPEG_QUALITY = 50 # JPEG质量（1-100），越低内存使用越少
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JPEG_PROGRESSIVE = False # 是否启用渐进式JPEG
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JPEG_OPTIMIZE = True # 是否启用JPEG优化
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# 队列管理
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FRAME_QUEUE_SIZE = 1 # 帧队列大小，设为1确保实时性
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MAX_FRAME_RATE = 20 # 最大帧率限制
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# ==================== 调试和监控配置 ====================
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# 日志级别
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MEMORY_LOG_LEVEL = 'INFO' # DEBUG, INFO, WARNING, ERROR
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ENABLE_MEMORY_LOGGING = True # 是否启用内存使用日志
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# 性能监控
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ENABLE_PERFORMANCE_MONITORING = True # 是否启用性能监控
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PERFORMANCE_LOG_INTERVAL = 60 # 性能日志间隔（秒）
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# ==================== 自适应优化配置 ====================
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# 自适应帧率
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ENABLE_ADAPTIVE_FRAMERATE = True # 是否启用自适应帧率
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MIN_FPS = 5 # 最小帧率
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MAX_ADAPTIVE_FPS = 30 # 最大自适应帧率
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# 自适应质量
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ENABLE_ADAPTIVE_QUALITY = True # 是否启用自适应质量
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MIN_JPEG_QUALITY = 30 # 最小JPEG质量
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MAX_JPEG_QUALITY = 80 # 最大JPEG质量
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# 内存压力阈值
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MEMORY_PRESSURE_LEVELS = {
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'low': 50, # 低压力阈值（%）
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'medium': 70, # 中等压力阈值（%）
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'high': 85, # 高压力阈值（%）
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'critical': 95 # 临界压力阈值（%）
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}
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# ==================== 辅助函数 ====================
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def get_memory_config():
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"""获取内存配置字典"""
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return {
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'frontend': {
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'max_fps': MAX_FPS,
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'frame_skip_threshold': FRAME_SKIP_THRESHOLD,
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'memory_check_interval': MEMORY_CHECK_INTERVAL_MS,
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'max_memory_percent': MAX_MEMORY_USAGE_PERCENT,
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'enable_cache': ENABLE_IMAGE_CACHE,
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'force_gc_interval': FORCE_GC_INTERVAL
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},
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'backend': {
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'frame_skip_ratio': BACKEND_FRAME_SKIP_RATIO,
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'max_frame_size': (MAX_FRAME_WIDTH, MAX_FRAME_HEIGHT),
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'max_memory_mb': MAX_BACKEND_MEMORY_MB,
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'memory_check_interval': BACKEND_MEMORY_CHECK_INTERVAL,
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'jpeg_quality': JPEG_QUALITY,
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'jpeg_progressive': JPEG_PROGRESSIVE,
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'jpeg_optimize': JPEG_OPTIMIZE,
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'queue_size': FRAME_QUEUE_SIZE,
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'max_frame_rate': MAX_FRAME_RATE
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},
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'monitoring': {
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'log_level': MEMORY_LOG_LEVEL,
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'enable_memory_logging': ENABLE_MEMORY_LOGGING,
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'enable_performance_monitoring': ENABLE_PERFORMANCE_MONITORING,
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'performance_log_interval': PERFORMANCE_LOG_INTERVAL
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},
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'adaptive': {
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'enable_adaptive_framerate': ENABLE_ADAPTIVE_FRAMERATE,
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'min_fps': MIN_FPS,
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'max_adaptive_fps': MAX_ADAPTIVE_FPS,
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'enable_adaptive_quality': ENABLE_ADAPTIVE_QUALITY,
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'min_jpeg_quality': MIN_JPEG_QUALITY,
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'max_jpeg_quality': MAX_JPEG_QUALITY,
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'memory_pressure_levels': MEMORY_PRESSURE_LEVELS
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}
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}
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def apply_memory_config(config_dict):
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"""应用内存配置"""
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global MAX_FPS, FRAME_SKIP_THRESHOLD, MAX_MEMORY_USAGE_PERCENT
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global BACKEND_FRAME_SKIP_RATIO, MAX_FRAME_WIDTH, MAX_FRAME_HEIGHT
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global MAX_BACKEND_MEMORY_MB, JPEG_QUALITY
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if 'frontend' in config_dict:
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frontend = config_dict['frontend']
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MAX_FPS = frontend.get('max_fps', MAX_FPS)
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FRAME_SKIP_THRESHOLD = frontend.get('frame_skip_threshold', FRAME_SKIP_THRESHOLD)
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MAX_MEMORY_USAGE_PERCENT = frontend.get('max_memory_percent', MAX_MEMORY_USAGE_PERCENT)
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if 'backend' in config_dict:
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backend = config_dict['backend']
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BACKEND_FRAME_SKIP_RATIO = backend.get('frame_skip_ratio', BACKEND_FRAME_SKIP_RATIO)
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if 'max_frame_size' in backend:
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MAX_FRAME_WIDTH, MAX_FRAME_HEIGHT = backend['max_frame_size']
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MAX_BACKEND_MEMORY_MB = backend.get('max_memory_mb', MAX_BACKEND_MEMORY_MB)
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JPEG_QUALITY = backend.get('jpeg_quality', JPEG_QUALITY)
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if __name__ == '__main__':
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# 测试配置
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config = get_memory_config()
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print("当前内存优化配置:")
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for category, settings in config.items():
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print(f"\n{category.upper()}:")
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for key, value in settings.items():
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print(f" {key}: {value}")
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