[Arm-netbook] [EOMA68] A20 G2D / VAAPI / VDPAU video acceleration in web browsers

[Russell Hyer]

thanks for the detailed answer.

russ
sent from a non libre device

On Tuesday, 9 August 2016, Luke Kenneth Casson Leighton <lkcl at lkcl.net>
wrote:

> ---
> crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
>
>
> On Tue, Aug 9, 2016 at 10:40 PM, Russell Hyer <russell.hyer at gmail.com
> <javascript:;>> wrote:
> > Hi Luke,
> >
> > So, if I've understood this post correctly, video playback on vlc
> > would perhaps be within the bounds of what the A20 hardware / software
> > could do?
>
>  yes.  ffplay, vlc, mpv, mplayer - all work fine, that's what this
> update was about:
>   https://www.crowdsupply.com/eoma68/micro-desktop/updates/cedrus
>
>  basically by using the full capabilities of the A20's accelerated
> hardware (both CEDAR and G2D), the CPU usage is somewhere around the
> 10% mark.  peanuts in other words.
>
>  the reason why those work is, through vdpau plugins there's two
> parts: "decode" part and "actual on-screen display" part.  all those
> video players have an option to do *both* things, and the vdpau-sunxi
> plugin that the Cedrus team wrote goes "okay, we're configured to use
> G2D, let's just go for it".
>
>  that's why you end up with the overlay issues, btw, because the G2D
> hardware is told to write direct to an area on-screen, bypassing the
> X11 protocol.
>
>  anyway, it's *ASSUMED* in the webkit and xulrunner engines that the
> "on-screen display" bit can be handled by OpenGL or...
> something-else-don't-know-don't-care-but-basically-it's-not.
>
>  and that means a bit of rewriting of both webkit and xulrunner so
> that they hand over the display bit to G2D.  that's going to require
> some specialist work.
>
> l.
>
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