[xine-devel] Interesting /dev/nvidiaX vsync fact

[Andrew de Q. <ad...@li...>]

First of all, my congratulations on your architecture for Xine.. it seems 
quite neat.

If (using the binary nvidia drivers), you open /dev/nvidiaX, and then call 
poll() on it, you will receive a POLLPRI event every VSYNC. For systems using 
a single head of one of these cards, this would be an ideal way to 
synchronise the vo_xv plugin to the vsync.

Problem: If you use both heads of the card (as I do, one for an LCD, and one 
for my TV), you unfortunately get all the vsyncs for both heads with no way 
of differentiating them. I'm investigating this further. 

Does anyone know if there is any information on the IOCTLs supported by the 
nvidia binary drivers? I can see from the parts that they release as source, 
that there are other ioctls within the binary part.

-- 
adq