Dan Williams wrote:
On Wed, 2007-03-07 at 21:32 +0100, salsaman wrote:
Dan Williams wrote:
We run a 1200x900 framebuffer. You also need EXA acceleration memory
and more memory for RandR rotation. Moving to 24-bit would mean the
loss of an additional 6MB of system memory on top of the existing 4 or 6
we already lose to framebuffer.
Please tell me you at least support YUV hardware scaling using SDL ?
Otherwise the framerates from LiVES in fullscreen mode will be abyssmal
- trying to get GDK to resize an image to 1200x900 and then converting
from 888 to 565 on a slow CPU will probaly result in about 1 fps (or
less...)
Yes, it will be slow. The Geode has hardware YUV -> RGB conversion and
hardware scaling support which as Jordan noted is accessible through Xv.
Again, the OLPC is not meant to be even a medium line Thinkpad or
desktop or whatever that's on the market today. You simply will not get
the performance you probably are looking for. That's just the way the
world works.
You'll have to spend time optimizing your program for the OLPC machine
if you want decent performance, and that may entail downsizing your
expectations of how fast things are expected to go, and adjusting your
code accordingly. It's a $100 laptop, not a $500 laptop.
Dan
I simply don't have time to do any big changes to LiVES. By the time I
get the laptop, I will have about two weeks to play with it before I fly
to Brazil for FISL. I will be back in Europe in June, but then it looks
like I will have to get a full time job to support myself. (Despite four
years of trying, I have been unable to find anyone interested in
sponsoring my work on LiVES/videojack/livido, etc). I even had to sell
my house last year so I could continue working on my FOSS projects.
Perhaps in 2008 I might be able to continue, there is a small
possibility of some LiVES funding then from a university in Brazil.
So basically, unless it works "out of the box", or a miracle happens,
it's probably not going to be possible for me to port LiVES to the OLPC
this year.
Regards,
Gabriel, main developer, LiVES
http://lives.sourceforge.net
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