It is a Zeemote driver for Linux. Zeemote is a mini handheld bluetooth gaming controller/joystick.

Linux SDL库，封装了声音、键盘、鼠标、显卡等设备。-This is the Simple DirectMedia Layer, a general API that provides low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D framebuffer across multiple platforms