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author | Daniel Caujolle-Bert <f1rmb@users.sourceforge.net> | 2001-04-18 22:33:39 +0000 |
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committer | Daniel Caujolle-Bert <f1rmb@users.sourceforge.net> | 2001-04-18 22:33:39 +0000 |
commit | db6b7c2e1c52c536a7f9690a410bf69817e0b2c5 (patch) | |
tree | fdaf7537abca3d4875ad21322c54888914ed15a2 /doc/README.syncfb | |
download | xine-lib-db6b7c2e1c52c536a7f9690a410bf69817e0b2c5.tar.gz xine-lib-db6b7c2e1c52c536a7f9690a410bf69817e0b2c5.tar.bz2 |
Initial revision
CVS patchset: 1
CVS date: 2001/04/18 22:33:39
Diffstat (limited to 'doc/README.syncfb')
-rw-r--r-- | doc/README.syncfb | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/doc/README.syncfb b/doc/README.syncfb new file mode 100644 index 000000000..092188eb3 --- /dev/null +++ b/doc/README.syncfb @@ -0,0 +1,144 @@ + + ===== ===== + XINE video output plugin for MATROX G400 / G200 cards *only* + ===== ===== + + + +* WHAT IS THIS PLUGIN ABOUT and WHY SHOULD I EVEN CONSIDER TO USE IT? :) + + This XINE video output plugin uses the so called Teletux driver which + provides special hardware features of the Matrox G400 and G200 cards + like deinterlacing, scaling and YUV data to RGB conversion --- just to + name a few. The plugin makes all those features available to XINE and + because all this tasks are done by the graphics card there is no need + for XINE to do them in software -- so you save precious CPU time which + you may gonna need for other things. :-) + + Another feature of this plugin is the synchronisation of the video + picture with the refresh of your screen. Before you ask why you would + need that - here the explanation... :) + + In order to have an optimal DVD playback the update of the image needs + to be syncronized with the refresh of the screen. Otherwise you will + sometimes see part of frame n and part of frame n+1 during an refresh. + This results in tearing artefacts on moving objects. + + When using this plugin the update of the screen is done in the V-SYNC + phase of your screen - and the tearing artefacts are gone forever. + + +* AND HOW DOES IT WORK? + + The Teletux driver is a module you will have to load that makes a + special device (/dev/syncfb) available which is opened by the plugin + and controlled with certain ioctl calls. Quite easy, isn't it? ;) + + That module is based on the mga_vid driver from Aaron Holzmann and was + advanced (and reworked) by Matthias Oelmann. + + +* OK I HEARD ENOUGH - HOW DO I INSTALL and USE IT? :) + + First of all you will need to get the Teletux driver itself. It's + available at http://teletux.sourceforge.net. Once you downloaded it, + unpack it to some directory of your choice, please read the README and + compile it (a normal "make" should work out-of-the-box). Now there are + only a few things left for you to do... + + 1) Become root. Hey now you can take over the world *evil laugh* :-))) + 2) Create a device called /dev/syncfb ===> mknod /dev/syncfb c 178 0 + 3) Copy the file "syncfb.o" to your modules directory (usually this is + /lib/modules/YOUR_KERNEL_VERSION/) and do a "depmod -a". + + This should be it. In order to use the Teletux driver you will have to + load it with the command "insmod syncfb.o" - please note that you will + have to load it every time you reboot if you wanna use the driver. + + XINE autodetects the driver and automaticly uses this plugin. + + It is possible now that the image during video playback is jerking. + This could be caused by the syncronisiation of the video image with + your screen refresh. You can easily fix that by switching your monitor + to the appropriate refresh rates (50 Hz for PAL, 60 Hz for NTSC). You + will need to add so called modelines to your XFree86 config to make + those 50 Hz/60 Hz modes available. + + Here is is a short listing of some sample modelines. Please add only + those two lines (for NTSC and PAL) which exactly fit the screensize + you are running your X Server with. You need to add those lines to the + monitor section of your XF86Config file as well as include their names + in the screen section (subsection display of the color depth your are + using). + + USE THE FOLLOWING MODELINES AT YOUR OWN RISK. THEY COULD DAMAGE YOUR + MONITOR PERMANTELY - PLEASE TAKE CAUTION AND DON'T BLAME US. YOU HAVE + BEEN WARNED. + + So much for the standard disclaimer. :) + + Note: If you want to be on the safe side, generate your very own + modelines with an application like kvideogen or use a service + like http://zaph.com/Modeline/ on the web. + + Also the modelines may need some fine tuning for your setup. You + can use xvidtune (comes with XFree86) to do that. + + # 1024x768 + + Modeline "1024x768pal" 64.94 1024 1040 1216 1328 768 768 775 802 + Modeline "1024x768ntsc" 54.32 1024 1040 1216 1328 768 768 774 802 + + # 1152x864 + + Modeline "1152x864pal" 68.82 1152 1168 1384 1496 864 864 871 902 + Modeline "1152x864ntsc" 80.93 1152 1168 1384 1496 864 864 872 902 + + # 1280x1024 + + none yet - will be added soon + + So before you run XINE please turn to the appropriate refresh rate and + the jerking should be gone. + + +* WHAT SCREENSIZE SHOULD I PREFER? + + Well. It is important that the screensize you choose for DVD playback + is exactly the same screensize you're starting up your X Server with. + So you shouldn't switch down to 1024x768 if you are running 1280x1024 + because that gives you a virtual screensize of 1280x1024 in a + resolution of 1024x768 - and the plugin cannot handle that yet. + + Now back to the question. A screensize of 1024x768 should be it. A DVD + is always 720x576 for pal and 720x480 for ntsc. If you've an anamorphe + DVD the image only has to be horizontally scaled to get back to the + original geometry of 16:9 which is easier to be done. + + +* WHERE IS THE WINDOW A VIDEO IS USUALLY DISPLAYED IN? + + The Teletux driver is writing directly to the video memory of the G400 + or G200 card and bypasses your X server. Getting that overlay into a + real window isn't as easy as you might think. + + For now a borderless window is being used which lays under the overlay + so you can click on the overlay (for the panel to appear) or issue any + command XINE supports by keyboard while you're over the overlay with + your mouse cursor. + + +* WHAT IS ON THE TODO LIST? + + The plugin does not yet activate the hardware deinterlacing. + The mouse cursor doesn't disappear yet when it should be disappearing. + Prevent the panel from hidding behind the overlay by moving it out of range. + Bug fixes, new features and optimizations. :-) + + +* CONTACTS and FEEDBACK + + Joachim Koening <joachim.koenig@gmx.net> + Matthias Dahl <matthew2k@web.de> + + or use the XINE User Mailinglist. (more infos see the general README) |