Hello!
I am planning to use the PWC driver for a Logitech Sphere webcam on a
robot we are building. The system is controlled by an 300mhz embedded
processor running linux.
I have 2 questions:
1- Since we are limited in processing power, we need to be as optimal
as possible.. What is the absolute fastest way to access the images in
the camera? Would it be faster to access the data using the "read"
function or if I did an "mmap"? If I use mmap, should I use multiple
buffers? So far, I have it working OK on my laptop with "read", but
when I open the camera, it takes almost a second to read the first
frame. (Subsequent frames are fast; just the first one takes a long
time)
2- Is it true that the driver requires X? I saw written somewhere
that X is required for the driver to work. I don't understand why
this is necessary. We don't need for the robot to display anything;
the camera will be used for vision processing only. We're limited on
space and processing, so I'd rather not have to cram X onto the
system. As it is, I've even disabled networking in the kernel I
built.
Thank you,
Hamed Ahmadi Nejad
_______________________________________________
pwc mailing list
http://lists.saillard.org/mailman/listinfo/pwc
|