Acceleration in our pockets
peter at familienijs.be
Thu Jun 12 13:08:46 CEST 2008
Op Tuesday 10 June 2008 10:11:23 schreef Andy Green:
> Somebody in the thread at some point said:
> | I have seen it this morning in the planet.openmoko.com,
> | http://unadventure.wordpress.com/2008/06/08/accelerating-in-my-pocket/
> | Andrzej "balrog-kun" Zaborowski was able to use mplayer with glamo
> | hardware acceleration Not all is lost to have some decent(not
> | excelent but barelly usable is enough) video playback, or Rasterman
> | has bad news again? ;)
> | Of course I understand than use sd-card as storage will be not an
> | option(shared bus issue) but a nfs mounted volume or a streaming mp4
> | source can be an option I guess
> Wah that was really good progress from Andrzej.
> I wouldn't give up on SD card as storage without trying it: if I
> understood what goes on then only the MP4 compressed stream is being
> sent to the Glamo by mplayer... I guess it means 100 - 200KBytes/sec
> which is way below the point we choke the Glamo memory bus. So we
> should be able to be pulling 200 - 300KBytes/sec (including audio) at
> the same from from SD.
> The wildcard is what the MPEG decoder unit in the Glamo is doing from
> the inside in terms of hogging the internal memory.
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.
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