Android S:SurfaceFlinger之SurfaceControl.java的用途
Handle to an on-screen Surface managed by the system compositor.SurfaceControl是一个句柄，该句柄是指向由系统合成器管理的屏幕上Surface。The SurfaceControl is a combination of a buffer source, and metadata about how to display the buffers.SurfaceControl是缓冲区源和有关如何显示缓冲区的元数据的组合。B
