overlay處理，可以進行hue，saturation，lightness調整-overlay treatment can be carried out hue, saturation, lightness adjust

媒体播放器，VC++环境，程序中用到了DirectShow开发包，实现播放媒体文件，音量和进度调整，字幕叠加，调节亮度，饱和度，对比度-Media player, VC++ environment, the program used in the DirectShow SDK, for playing media files, adjust volume and progress, superimposed subtitles, adjust brightness, saturation, co