Am 10.08.2016 um 16:30 schrieb Luke Kenneth Casson Leighton:
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crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Wed, Aug 10, 2016 at 8:23 AM, Andreas Baierl <[email protected]> wrote:
Hi Luke,
Am 10.08.2016 um 00:16 schrieb Luke Kenneth Casson Leighton:
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crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Tue, Aug 9, 2016 at 10:40 PM, Russell Hyer <[email protected]>
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.
Just a minor correction. The G2D (mixer processor) hardware (only on
A10/A20) is only used within libvdpau-sunxi to blit one rgba surface into
another one. It has nothing to do with bringing something *really* to
screen, because it only handles the blit or fill actions on rgba surfaces.
The only use of rgba surfaces that i know of, is to realize an OSD,
subtitles etc... as an overlay over the video.
interesting.... because if i don't enable OSD i get absolutely
nothing (black screen) on mpv and other players.
Arghh... You are the second one, that reports that issue :(
Now i really have to investigate into this :p
With enable you mean setting VDPAU_OSD=1 ? And I suppose you do this all
in windows within X11?
But getting offtopic now. Maybe we should continue on irc...
rellla
i knoooow....
l.
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