视频接收端，首先见接收到的图像进行jpeg的解压，解压后的图像通过framebuffer的方式显示出来。-Video receiver, first see the jpeg images received from the decompression, the image after decompression way through the framebuffer display.

Simple DirectMedia Layer, 简称SDL，是一个自由的跨平台的多媒体开发包，主要通过OpenGL和2D视频帧缓冲(framebuffer)提供对音频、键盘、鼠标、游戏操纵杆 (joystick)和3D硬件的底层访问。它被广泛的应用于MPEG回放软件、模拟器和多个著名游戏中，如获得大奖的《文明：权倾天下》-Simple DirectMedia Layer, abbreviated SDL, is a free cross-platform multimedia develop