how to bypass the "gstglcolorconvertelement" during playback?

[Nicolas Dufresne]

Le mardi 04 septembre 2018 à 09:22 +0800, tugouxp a écrit :
> hi all:
>  
>    but, this is another test of using waylandsink without convertor:
>  gst-launch-1.0 filesrc location=/mnt/UDISK/N_1080P_AVC_60F.avi !
> avidemux ! h264parse ! omxh264dec ! queue ! waylandsink
> 
> and the pipeline flow is as below, so , it seems there are no convert
> operation has been done before stream goes into the wayland sink, but
> from the hardware view, it still use the one single RGB layer with
> the GUI, so
> why is this？　did the gstwaylandsink itself would do the convert from
> yuv to rgb internallly?  i am very confused! thanks for your kindly
> support.

I don't mind repeating myself. You need a compositor that supports
this. As of today, none of Weston, gnome-shell or Kwin have this
support. Also, RPi OMX decoder does not have DMABuf support, so it
won't be zero-copy either.

> 
> 
> 
> 
> 
> 
> At 2018-09-03 22:07:37, "Nicolas Dufresne" <nicolas at ndufresne.ca>
> wrote:
> > 
> > Le lun. 3 sept. 2018 07:57, tugouxp <13824125580 at 163.com> a écrit :
> > > hi folks:
> > > 
> > > i am testing the gst playback function with following commands:
> > >       gst-launch-1.0 playbin uri=file:///mnt/UDISK/xingji.mp4
> > > video-sink="glimagesink x=0 y=0 width=400 height=400"
> > > my display hardware support hardware overlay function(support
> > > isolated graphic layers of rgb and yuv),  so i expect the video
> > > would be displayed on a independent yuv layer, not share with the
> > > GUI layer.
> > > but beyond my expection, i found from the display registers that
> > > only ONE RGB layer was used during the playback ,which means the
> > > video and RGB are mixed together to the some  GUI layer.
> > 
> > This is what GL rendering means. The GPU renders everything into
> > one frame buffer. To use overlays (or underlays as found on modern
> > hw) like you describe you would need a capable compositor (none of
> > Weston, gnome-shell or Kwin supports this) and use waylandsink.
> > 
> > > and the GST pipeline flow shows that. too, you can see that there
> > > are extra "gstglcolorconvertelement"  elements doing the covert
> > > operation frome  YUV12 format to RGB .
> > > that was not what i wanted.
> > > so how to bypass the "glimagesink" elements so tath the yuv data
> > > can directly show on the yuv layer without convertion?
> > > 
> > > thanks for your kindly help.
> > > the attachment and the following picture are same, you can refer
> > > anyone. 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > >  
> > > _______________________________________________
> > > gstreamer-devel mailing list
> > > gstreamer-devel at lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> 
> 
> 
>  
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 195 bytes
Desc: This is a digitally signed message part
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20180904/ff05dd2a/attachment-0001.sig>