On Sonntag 17 September 2006 22:17, Marko Mäkelä wrote: > On Sun, Sep 17, 2006 at 08:33:37PM +0300, Heikki Lindholm wrote: > > The included patch makes dfb:mgatv use YV12 colourspace for video and > > the hardware subpicture layer for OSD. The patch is a prime example of > > bad goal-oriented programming, but does what I wanted: improves > > performance to the level that my 450 MHz P2 can now function as a DVB > > box like no underpowered P2 has done before! Unfortunately, the patch > > probably breaks everything else, but I'm too lazy to clean it up. > > I'm very much interested in this. > > You didn't get rid of the CPU-burning Flip() calls, did you? At least > on my system, DirectFB spends about 10% of the CPU cycles waiting for > MGA engine ready. Adding a usleep(2000) right before the Flip() call > reduces the CPU load but risks dropping frames. I believe it would be > much more efficient if the Flip() method blocked the thread until the > hardware is ready. That would require some new ioctl() in the kernel.
Marko, I think you showed me a response from Ville regarding the ioctl issue. But unfortunatly I could not find this. Was the modification based on the ioctl calls from him at directfb list which were not committed ? -- Stefan Lucke _______________________________________________ Softdevice-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/softdevice-devel
