Acceleration in our pockets

[Carsten Haitzler (The Rasterman)]

On Thu, 12 Jun 2008 14:52:07 +0000 (GMT) David Samblas Martinez
<dsamblas at yahoo.es> babbled:

nb - i codec only - and i also used mplayer at the time. mpeg1, mpeg2, not to
mention a myriad of other codecs won't work there, and it still only producing
qvga video.

if you do follow prior threads on this, you will notice that i never covered
the mp3 decode of the glamo. that's always possible, but as such to do well
would need a generic codec-level api supporting it - like openmax.

> I copy & paste an very interesting comment from balrog ,seems that I have
> become his(totally voluntary) mail list assistant ;)
> 
> Rasterman..... 352x288 25 fps..... something to say?
> 
> --------------Begin of comment-----------------------
> #  balrog Says:
> June 11, 2008 at 4:20 am
> 
> Mikko: I hope we’ll eventually see more than just MPEG support on the Glamo
> (3D stuff etc). Regarding QVGA at this moment it’s a conjecture… and at this
> moment it’s confirmed. I’ve just tried QVGA and while the colours became a
> bit undersaturated and gamma seems to be too high, I got full 25fps playback
> both straight and with rotation, hw-scalled from 352×288 to 240×320 or
> 320×240. Unfortunately tslib seems to not have noticed the change and still
> reports touch coords in 0…640 range.
> 
> i_m_bison: Darude_-_Feel_the_beat.mp4 (the video is ok, the music not so
> much:))
> 
> tuXXX: I was wondering about that too, but rather MPEG decoding on the CPU
> and scaling/rotation on Glamo - this would allow us to do more stuff
> concurrently. The other way, as Mikko notes you transfer the video to the
> VRAM, then back to the RAM and then back to the VRAM and the bus becomes a
> bottleneck. In the current setup and normal usage I don’t agree with Raster
> that 7M/s is a bottleneck, it’s rather hard to saturate with normal X usage
> even coupled with SD card traffic etc.
> ----------End of comment------------------------------
> Raster, I'm really happy that you where so wrong at this topic
> 
> --- El jue, 12/6/08, Joerg Reisenweber <joerg at openmoko.org> escribió:
> 
> > De: Joerg Reisenweber <joerg at openmoko.org>
> > Asunto: Re: Acceleration in our pockets
> > Para: community at lists.openmoko.org
> > CC: "Peter Nijs" <peter at familienijs.be>
> > Fecha: jueves, 12 junio, 2008 2:37
> > Am Do  12. Juni 2008 schrieb Peter Nijs:
> > > Isn't the shared bus an advantage because now it
> > can use DMA? Maybe that's 
> > > why  
> > > it is possible to hook up an sd-card to the glamo
> > anyway. I see no other 
> > > explanation why one would put an sd cardreader in a
> > graphics ship. Please 
> > > tell me if and why I'm wrong.
> > > 
> > > Peter
> > > 
> > Good point. Would make perfect sense...
> > /j_______________________________________________
> > Openmoko community mailing list
> > community at lists.openmoko.org
> > http://lists.openmoko.org/mailman/listinfo/community
> 
> 
>       ______________________________________________ 
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> 
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-- 
Carsten Haitzler (The Rasterman) <raster at openmoko.org>