Could not open DRM module

[Erkan Karataş]

Hi all,

I'm trying to play video on embedded device with Java app. I have a BeagleBoard x15 card installed linux. 

Hardware accelerator works fine on command line:

 gst-launch-1.0 playbin uri=file:///home/video1.mov video-sink="kmssink name=kmssink0"

When I run java app, it fails with error: 

stMessageStateChanged, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING;

GstMessageStateChanged

streamsynchronizer0

STATE_CHANGED

----------

GstMessageStateChanged, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING;

GstMessageStateChanged

playsink

STATE_CHANGED

----------

GstMessageStateChanged, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_PLAYING;

GstMessageStateChanged

playbin

STATE_CHANGED

----------

GstMessageStateChanged, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING;

GstMessageStateChanged

streamsynchronizer0

STATE_CHANGED

kmssink0

7

Could not open DRM module (NULL)

----------

GstMessageError, gerror=(GError)NULL, debug=(string)"../../../gst-plugins-bad-1.12.2/sys/kms/gstkmssink.c\(610\):\ gst_kms_sink_start\ \(\):\ /GstBin:bin0/GstKMSSink:kmssink0:\012reason:\ No\ such\ file\ or\ directory\ \(2\)";

GstMessageError

kmssink0

ERROR

kmssink0

4

GStreamer error: state change failed and some element failed to post a proper error message with the reason for the failure.

----------

GstMessageError, gerror=(GError)NULL, debug=(string)"../../../../gstreamer-1.12.2/libs/gst/base/gstbasesink.c\(5264\):\ gst_base_sink_change_state\ \(\):\ /GstBin:bin0/GstKMSSink:kmssink0:\012Failed\ to\ start";

GstMessageError

kmssink0

ERROR

Java file:

Bin bin = Bin.launch("kmssink name=kmssink0 ", true);
playbin = new PlayBin("playbin");
playbin.setVideoSink(bin);

File video = new File("/home/video1.mov");
playbin.setURI(video.toURI());

bus = playbin.getBus();

bus.connect(new Bus.INFO() {
    @Override
    public void infoMessage(GstObject gstObject, int i, String s) {
        System.out.println(gstObject.getName());
        System.out.println(i);
        System.out.println(s);
    }
});

bus.connect(new Bus.ERROR() {
    @Override
    public void errorMessage(GstObject gstObject, int i, String s) {
        System.out.println(gstObject.getName());
        System.out.println(i);
        System.out.println(s);
    }
});


bus.connect(new Bus.MESSAGE() {

    @Override
    public void busMessage(Bus arg0, Message arg1) {
        System.out.println("----------");
        System.out.println(arg1.getStructure());
        System.out.println(arg1.getStructure().getName());
        System.out.println(arg1.getSource().getName());
        System.out.println(arg1.getType());
    }
});

playbin.play();

Do you have any idea or suggestion with this problem?

[Neil C Smith]

On Fri, 18 Jan 2019 at 15:43, Erkan Karataş <ekara...@gmail.com> wrote:
> Hardware accelerator works fine on command line:
> gst-launch-1.0 playbin uri=file:///home/video1.mov video-sink="kmssink name=kmssink0"

...

> Java file:
>
> Bin bin = Bin.launch("kmssink name=kmssink0 ", true);
>
> playbin = new PlayBin("playbin");
> playbin.setVideoSink(bin);

Hi and welcome! Sorry for the late reply as I was at a conference.
Doesn't seem like anyone else has responded to you?

I would firstly try running this with Pipeline.launch() identically as
you have on the command line and see if it works. That might flag up
problems with the JDK in the mix.

Note that the code you have above is not doing the same thing - it's
putting the kmssink in a Bin, rather than at the top level. This
might be the cause of the issue - I've noticed a few elements having
problems doing that.

Ideally you want to use the ElementFactory to create the kmssink I think.

Best wishes,

Neil
--
Neil C Smith
Artist & Technologist
www.neilcsmith.net

PraxisLIVE - hybrid visual live programming
for creatives, for programmers, for students, for tinkerers
www.praxislive.org

[Erkan Karataş]

Thank you Sir,

I have in a trouble with beagleboard x15. My goal is play video on GPU with JavaFx. I tried lots of things, images, kernels, packages. I could not install even drivers. Is really hard to play video with Java on BBX15 using hardware accelerator. I found gstreamer-java and implemented in my small project  but as you see, I have lots of problems. I'm sorry for your time wast.

22 Ocak 2019 Salı 16:13:15 UTC+3 tarihinde Neil C Smith yazdı:

[Neil C Smith]

On Tue, 22 Jan 2019, 13:54 Erkan Karataş <ekara...@gmail.com wrote:

Thank you Sir,

I have in a trouble with beagleboard x15. My goal is play video on GPU with JavaFx. I tried lots of things, images, kernels, packages. I could not install even drivers. Is really hard to play video with Java on BBX15 using hardware accelerator. I found gstreamer-java and implemented in my small project  but as you see, I have lots of problems. I'm sorry for your time wast.

No problem! And not a time waste. Anything that works on the command line should work fine with the bindings if you replicate the pipeline correctly. However, without hacking into JavaFX internals you won't be able to connect this up. You'd have to stick with a separate output.  

Best wishes, 

Neil