硬件环境：AIO_Firefly_rk3399J
系统环境：ubuntu18.04
执行./mpp_linux_demo后出现以下错误：
mpp[23342]: mpp_info: mpp version: 5b1156a4 author: Yandong Lin 2021-04-09 [vcodec_service]: Fix array out of bounds issue
mpp[23342]: mpp_rt: NOT found ion allocator
mpp[23342]: mpp_rt: found drm allocator
failed to open rga dev /dev4l/by-path/platform-ff680000.rga-video-index0.
failed to exec mRGA->init -1.
failed to init codec
mpp[23342]: mpp_meta: ~MppMetaService cleaning leaked metadata
mpp[23342]: mpp_buffer: ~MppBufferService cleaning leaked group
mpp[23342]: mpp_buffer: ~MppBufferService cleaning leaked buffer