But with a serious loss of functionality. Given the internet connection that I have (cellular) I can’t reasonably set it up to do live streaming. I’ve also disabled interaction with the cam. What’s left is an image uploaded every hour. Not super duper cool but I’ll take what I can get in this neck of the woods.
Hopefully this will get better when better internet is available.
Here’s is some information that took me a good while to gather.
With the igb driver in FreeBSD, the mbuf cluster size needed is a mathematical formula involving the number of CPUs & the desired MTU. Unfortunately, it is currently hard set. On enterprise machines with many cores and higher MTUs, it is quite easy to reach this set limit. It will express itself with the following error message after an ifconfig:
igb0: Could not setup receive structures
This limit can be overridden with the following in /etc/sysctl.conf
kern.ipc.nmbclusters=131072 kern.ipc.nmbjumbo9=38400
These are the value that worked for 16 cores & an MTU of 9000.
While we’re at it, it took me a while to nail the exact syntax require for NIC bonding so here it is:
/etc/rc.conf
if_lagg_load="YES" ifconfig_igb0="mtu 9000 UP" ifconfig_igb1="mtu 9000 UP" cloned_interfaces="lagg0" ifconfig_lagg0="laggproto failover laggport igb0 laggport igb1 192.168.0.123 netmask 255.255.255.0"
As far as I can tell, capitalization matters…
When we lived in the city, ambient light pollution was such that I could set my CCTV cams to a certain brightness/contrast and the limited auto adjustments they did were enough to cope with day & night. In the middle of the forest, the night gets full on #000000 dark. The poor cams can’t adjust and I need to pick whether I want to record at night and get white frames during the day, or at daytime and get black frames during the night.
I wrote the following script which computes the average brightness of a cam’s current frame and issues more drastic adjustments if needed. It is obviously tailored for my FI8918Ws but the same idea can be used for others.
#!/usr/bin/php
<?php
$img = @imagecreatefromjpeg( 'http://192.168.1.203:8003/snapshot.cgi?user=<username>&pwd=<password>' ) ;
if( $img===false ) {
die( "Unable to open image" ) ;
}
$w = imagesx( $img ) ;
$h = imagesy( $img ) ;
$total_r = 0 ;
$total_g = 0 ;
$total_b = 0 ;
for( $i=0 ; $i<$w ; $i++ ) {
for( $j=0 ; $j<$h ; $j++ ) {
$rgb = imagecolorat( $img, $i, $j ) ;
$total_r += ($rgb >> 16) & 0xFF;
$total_g += ($rgb >> 8) & 0xFF;
$total_b += $rgb & 0xFF;
}
}
$average_brightness = round( ( $total_r / ($w*$h) + $total_g / ($w*$h) + $total_b / ($w*$h) ) / 3 ) ;
echo $average_brightness, "n" ;
if( $average_brightness<30 ) {
echo "night time!n" ;
echo "moden" ;
$result = file_get_contents( 'http://192.168.1.203:8003/camera_control.cgi?param=3&value=0&user=<username>&pwd=<password>' ) ;
sleep( 10 ) ;
echo "contrastn" ;
$result = file_get_contents( 'http://192.168.1.203:8003/camera_control.cgi?param=2&value=6&user=<username>&pwd=<password>' ) ;
sleep( 10 ) ;
echo "brightnessn" ;
$result = file_get_contents( 'http://192.168.1.203:8003/camera_control.cgi?param=1&value=240&user=<username>&pwd=<password>' ) ;
} else if( $average_brightness>170 ) {
echo "day time!n" ;
echo "moden" ;
$result = file_get_contents( 'http://192.168.1.203:8003/camera_control.cgi?param=3&value=2&user=<username>&pwd=<password>' ) ;
sleep( 10 ) ;
echo "contrastn" ;
$result = file_get_contents( 'http://192.168.1.203:8003/camera_control.cgi?param=2&value=4&user=<username>&pwd=<password>' ) ;
sleep( 10 ) ;
echo "brightnessn" ;
$result = file_get_contents( 'http://192.168.1.203:8003/camera_control.cgi?param=1&value=64&user=<username>&pwd=password>' ) ;
}
?>[/code]