IMX Scaler / CSC m2m driver.

[Víctor M. Jáquez L.]

On 02/08/16 at 01:28pm, Florian Vaussard wrote:
> 
> On 02/08/2016 01:10 PM, Víctor M. Jáquez L. wrote:
> > On 02/08/16 at 12:59pm, Florian Vaussard wrote:
> >>
> >> On 02/08/2016 11:34 AM, Víctor M. Jáquez L. wrote:
> >>> On 02/08/16 at 08:32am, Florian Vaussard wrote:
> >>>>
> >>>> Currently I am using only v4l2videoNdec + fbdevsink. I am porting Philipp's
> >>>> patches to linux 4.4 to get the IPU color converter but there is some work due
> >>>> to recent changes in media and I am lacking time. So first I am looking at the
> >>>> performances obtained by other people.
> >>>>
> >>>> I saw some out-of-tree DRM/KMS sinks [1][2] but they don't appear to be merged
> >>>> in gstreamer and both appear to be 2 years old, thus it will probably take some
> >>>> time to get them up and running :-/ Do you know any other alternatives?
> >>>>
> >>>> So before going into this, I just wanted to be sure that one can get good
> >>>> performances at the end of the day without being trapped in a dead-end.
> >>>
> >>> Ehem :)
> >>>
> >>> https://bugzilla.gnome.org/show_bug.cgi?id=761059
> >>>
> >>
> >> Oh sorry, missed that one! Great to see someone working on this :)
> >>
> >> You mentioned in your tests that you used imx6 with videodec and dmabuf import.
> >> Do you have some performance figures for such pipelines?
> > 
> > I haven't done strict perf analysis, just quick tops when pipeline are
> > running, but there are big differences:
> > 
> > videodec ! dmasink without dmabuf-import => ~45% CPU consumption
> > videodec ! dmasink with dmabuf-import => ~6% CPU
> > 
> 
> Great :) And are you able to play 1080p smoothly?

Do'h... I forgot to tell you that: my tests are with 720p

I tried with 1080p, and though the decoder can handle it, the display I have
doesn't. What I did in order to try it is to display only the area and it
plays smoothly but I see some visual artifacts, like an upper band with a
different color :/

vmjl