GstGLFramebuffer
GObject ╰── GInitiallyUnowned ╰── GstObject ╰── GstGLFramebuffer
GstGLFramebuffer * gst_gl_framebuffer_new (GstGLContext *context);
GstGLContext *context
typedef struct _GstGLFramebuffer GstGLFramebuffer;
struct GstGLFramebufferClass { GstObjectClass object_class; };