Tim Chick wrote: > On Monday 10 March 2008 14:39:04 Stanislav Brabec wrote:
> > Trying to play 480x640 video using pxa driver enters my Z into dead > > swapping mode. 240x320 plays perfectly. > > > I wonder if that's simply because you run out of RAM? I keep on saying that > you will only have much luck with resolutions not much higher than 320x240. > PAL VideoCD is fine, but don't go any higher, Yes. It is possible to play a bit higher resolution with a lot of swapping before starting to play. > > I think it may be a bug. In Angstrom I see weak artifact few pixels > > above any edge. Diag mode and Sharp ROM does not have this problem, and > > I guess they use significantly lower frequency (refresh rate is even > > visible). > > > Yes - but this has been around for ages - there was some mailing list traffic > about it years ago from Richard P - the refresh rate is over 100Hz for > 480x640 mode - which is apparently the same as the Sharp ROM. It means that somebody else see in Angstrom the same weak shadow above as I see? http://www.penguin.cz/~utx/zaurus/temp/zaurus_artifacts.jpg These artifacts are visible in console, but not in diag screen. I don't remember them from Sharp ROM. My colleague running OZ never seen them. > > > This uses much SDRAM bandwidth. Also the bottom layer screen > > > depth is 16bit - again this uses lots of bandwidth - it could be > > > reduced whilst playing moves full screen. This needs a new mode added > > > to the kernel, and maybe a change to the pxa fb driver to allow the > > > depth to be changed without freeing the screen buffer. > > > > Isn't there any way to turn on mode 240x320 with hardware scaling? How > > did it Sharp ROM? > > > There is no hardware scaling. If you use -vo pxa -vm it will alter the clock > generation of the device to "double" each pixel size, so 320x240 video will > play nicely, fullscreen, in Angstrom - the same way as it used to in Cacko > etc. Changing pixel clock is a kind of hardware scaling. I didn't know that -vm works with pxa. Thanks for info. PXA270 manual talks about 256kiB of RAM directly on the chip. Do you know, whether it is used for any purpose just now and whether it is faster than external memory? ________________________________________________________________________ Stanislav Brabec http://www.penguin.cz/~utx/zaurus _______________________________________________ Angstrom-distro-users mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/angstrom-distro-users
