2. GFBG Overview

Framebuffer (GFBG for short) is a module provided by the digital media processing platform for managing overlay graphics layers. In addition to basic Linux Framebuffer functions such as graphics display and pixel-data processing, it provides multiple extensions, including multi-layer overlay, dynamic layer-attribute adjustment, optimized memory management, and efficient hardware acceleration. These capabilities allow GFBG to meet complex graphics-display requirements while providing developers with greater flexibility and convenience.