Set Frequency Problem
- Date: Mon, 22 Mar 2010 13:05:59 +0100
- From: Sanfelici Claudio <sanfelici@xxxxxxxxx>
- Subject: Set Frequency Problem
it's first time I write to this mailing list, so I'm sorry if this
problem has been already discussed.
I'm writing an application in java tha use v4l2 through JNI layer (but I
have the same problem in a C test program)
When I call the VIDIOC_S_FREQUENCY the driver change the frequency, but
the video signal is 0 (according to the VIDIOC_G_TUNER) and the image is
black. I've to call some times the VIDIOC_S_FREQUENCY to get the signal on
The driver I'm using is the SAA7130.
Just another question: at this time I'm working with userpointer and
read method to grab the images, but probably I will must use the video
overlay. I've tried to start the overlay following the v4l
documentation, but it doesn't work. I suspect that I must use the Xorg
library to get some information (such as the frame buffer address).
Could someone show me the way?
Thanks in advance
di Sanfelici Claudio
Via Monza, 53
20063 Cernusco sul Naviglio - MI
Cell. +39 3184.108.40.2065
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