x11 and gstreamer compete on same display ?

[Todd Fischer]

> 
> Date: Thu, 14 Dec 2017 21:14:07 +0200
> From: Ran Shalit <ranshalit at gmail.com>
> To: Discussions specific to using GStreamer on embedded systems
> 	<gstreamer-embedded at lists.freedesktop.org>
> Subject: Re: x11 and gstreamer compete on same display ?
> Message-ID:
> 	<CAJ2oMhJ4NmYkeMYvEABoan2G16+_5OkC8JcE8JOBDZEw7edSAw at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
> 
> On Thu, Dec 14, 2017 at 8:25 PM, Todd Fischer <todd.fischer at ridgerun.com> wrote:
>> 
>>> On Dec 14, 2017, at 11:07 AM, Ran Shalit <ranshalit at gmail.com> wrote:
>>> 
>>> Hello,
>>> 
>>> I am using linux distro with x11.
>>> We have some issue, that gstreamer is not displayed correctly with rtp.
>>> We suspect that x11 and gstreamer compete on the display (becuase on
>>> exiting the gstreamer process x11 is immeditely shown again).
>> 
>> What is the pipeline you are using?
> 
> Hi,
> This is the pipeline:
> 
> gst-launch-1.0 -v udpsrc port=5000 caps = "application/x-rtp,
> media=(string)video, clock-rate=(int)90000,
> encoding-name=(string)RAW,width=(string)1280,height=(string)1024,
> payload=(int)96,sampling=YCbCr-4:2:0" ! rtpvrawdepay ! imxg2dvideosink
> use-vsync=true
> 
> 

There are several other video sinks available for iMX6.  I was trying to find a specific example for QT + GST on iMX6, but didn’t stumble across one.  You might find some useful information at

* http://developer.ridgerun.com/wiki/index.php?title=IMX6_GStreamer_Pipelines_-_SDK_Turrialba <http://developer.ridgerun.com/wiki/index.php?title=IMX6_GStreamer_Pipelines_-_SDK_Turrialba>
* http://developer.ridgerun.com/wiki/index.php?title=Getting_Started_Guide_for_RidgeRun_iMX6_Graphics-Server <http://developer.ridgerun.com/wiki/index.php?title=Getting_Started_Guide_for_RidgeRun_iMX6_Graphics-Server>

> 
>> 
>> What system is running the pipeline?
>> 
> imx6, yocto morti, x11 distro (there is also fb distro, which might be better?)
> 
>> It sounds like the hardware that mixes the display and video windows isn’t configured as you would like.  The easiest fix is likely to use a different video sink.
> 
> This is my assumption. That x11 and gstreamer are competing. when I
> stop the pipeline I immediately see the GUI. even when I disabled
> desktop manager with systemctl set-default multi-user.target ,
> although I don't see the gnome environment, I keep see the xterm
> terminal. So, I suspect that they compete, and that's why gstreamer
> has difficulties. Yet, I am not sure,  with simpler pipelines without
> rtp, like videotstsrc, then it appears better on the screen.
> 
>> 
>>> 
>>> Does it make sense ?
>>> 
>>> Thank you,
>>> Ran
>> 
>> Todd
>> RidgeRun
>> 
>> _______________________________________________
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>> gstreamer-embedded at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-embedded
> 
> 
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