Hisilicon Framebuffer（以下简称HiFB）是海思数字媒体处理平台提供的管理图像叠加

层的模块，它基于Linux Framebuffer 实现，在提供Linux Framebuffer 基本功能的基础

上，还扩展了一些图层控制功能，如层间Alpha、层间colorkey 等-Hisilicon Framebuffer (hereinafter referred to as HiFB) is Hass digital media processing platform provides image overlay management module, which is based on Linux Framebuffer achieved in providing the basic functions of Linux Framebuffer, based on the number of layers is also extended control functions, such as layer between Alpha, and other layers colorkey