Hi all
I am making a grabber that have to grab pictures every 1/25 sec. The picktures
have to be copyed to some other location for further calculations. I have
tried to do so with the standard bttv driver shiped with kernel 2.4.4. I am
using a hauppage winTV card. I have to mmap bufferes. I have made a sample
program that look like this.
start grab buffer
shift buffer
while(1) {
start grab buffer
shift buffer
sync buffer
copy buffer
}
but I get the same picture from both buffers (pic 0=1, 1=2, 3=4,......). The
strange thing is that i get the pictures with exact 25Hz.
So I tried to read some doc on the net. I found a bttv 8.0.16 bttv driver that
could grab with 25Hz, and olso stated that the 7.xx could not do so.
perfect.....
so I have downloaded a lot of tgz files from the net but I think I miss
something.
This is what I have tried.
videodevX-20010501.tgz (tar -zxvf make make install)
driver-20010316.tgz (tar -axvf make make install)
from this I get
bttv-driver.c:346:9: warning: pasting "(" and "KERN_DEBUG" does not give a
valid preprocessing token
bttv-driver.c:436:25: warning: pasting "(" and ""bttv%d: PLL: is off\n"" does
not give a valid preprocessing token
and A LOT MORE...
I olso tried this
bttv-0.8.16.tar.gz (tar -zxvf )
patch -p1 < patch patch-v4l2-2.4.4 (does patch , but not with a clean kernel.
some setting have to be enabled)
patch -p1 < patch-v4l2-2.4.4-ac6 (gets HUNK. So I tried without this.)
make -> a lot of errors
What am I doing wrong?
Have I missed something?
I have tried for 2 dayes now. Thats the reason for this mail. I gees the
answer is simple.
Anders Gnistrup.
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