Failed to output the picture in glimage EGL mode.
the DMA seems not work:
gst-launch-1.0 -v videotestsrc num-buffers=200 ! capsfilter caps=video/x-raw,format=NV12,width=320,height=320 ! vaapih265enc ! vaapih265dec ! vaapipostproc ! glimagesink
use iHD driver