how can use "mppvideodec" with gstreamer

[kishanpatel001]

Hello,
        Actually i am using rockpro64(rk3399) board. I have flashed
bionoc-ubuntu-64bit image. 
UI can see "mppvideodec" plugins when execute "gst-inspect-1.0 |grep mpp"
command.

But, when i tried to use "mmpvideodec" in gstreamer,k i got some errors as
below:

Setting pipeline to PAUSED ...
mpi: mpp version: Without VCS, under bleeding
Pipeline is live and does not need PREROLL ...
Got context from element 'autovideosink0': gst.gl.GLDisplay=context,
gst.gl.GLDisplay=(GstGLDisplay)"\(GstGLDisplayX11\)\ gldisplayx11-0";
Setting pipeline to PLAYING ...
New clock: GstSystemClock
hal_h264d_api: Assertion p_hal->vcodec_type & ((0x00000200) | (0x00000001) |
(0x00000002)) failed at hal_h264d_init:186
mpp_device: mpp_device_init failed to find device for coding 0 type 7
hal_h264d_api: p_hal->vpu_socket <= 0
mpp_hal: mpp_hal_init hal h264d_rkdec init failed ret -2
mpp_hal: mpp_hal_init could not found coding type 7
mpp_dec: mpp_dec_init could not init hal
mpp: error found on mpp initialization
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal
data stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop ():
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming stopped, reason error (-5)
Execution ended after 0:00:00.349876884
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...


I have tried pipeline as below:
1. gst-launch-1.0 v4l2src device=/dev/video0 ! mppvideodec ! autovideosink
2. gst-launch-1.0 -v rtspsrc
location=rtsp://admin:jenex#2018@192.168.1.108:554 latency=10 ! rtph264depay
! h264parse ! mppvideodec ! videoconvert ! autovideosink sync=false

Moreover, what is the meaning of "none" in below output:
-----------------------------------------------------------------------------------
rock64 at rockpro64:~$ apt-cache policy linux-rock64-package
linux-rock64-package:
  Installed: (none)
  Candidate: 0.7-24
  Version table:
     0.7-24 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.6.44 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.5.15 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.5.10 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.5.9 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.5.8 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.4.17 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.4.16 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.4.12 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.4.3 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.3.7 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.3.4 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.3.3 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.3.2 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages
     0.2.1 500
        500 http://deb.ayufan.eu/orgs/ayufan-rock64/releases  Packages

Thanks & Regards,
Kishan Patel.



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