## Initializes some variables and starts a software.
my $nff   = new NffInterface;
my $logid = $nff->loadLog($inputFile);

## Picks an index in the log
my $fid1 = $nff->createFilter($logid, {type => "logcode", logcode => 0x1069});
my $fid2 = $nff->createFilter($logid, {type => "logcode", logcode => 0x108A});

## Creates an array of multiple filters on order of the particular logId.
my $view = $nff->createView([ $fid1, $fid2 ]);

my @hist;

## Iterates on filter indices and gets the next log in the view array.
while((my $log = $nff->getNextLogFromView($view)) != -1){
    my $code = getLogCode($log);
    printf "%X\n", $code;
    if($code == 0x108A){ # use == for numbers
        my $fngpkt = parse108A($log); # fngpkt instead of obj1
        my $slen = $fngpkt->{numF};
        for(my $i = 0; $i < $slen; $i++){
            my $sum = 0;
            my $sec = $fngpkt->{sectors}{$i};
            my $flen = $sec->{numFingers};
            for(my $j = 0; $j < $flen; $j++){
                $sum += $sec->{$j}{c2i};
            }

            ## collects the sum for each SECTOR...
            ## note that c2i history entries have 2 elements
            print "c2i sum = $sum\n";
            push @hist, [ $fngpkt->{timestamp}, $sum ];
        }
    }elsif($code == 0x1069){
        my $logpkt = parse1069($log); # logpkt (or something) instead of obj2

        ## agc entries have 3 elements
        push @hist, [ $logpkt->{timestamp},
                      $logpkt->{0}{rxAgc0},
                      $logpkt->{1}{rxAgc0} ];
    }
}

## Now we have a history of the data we care about...

calcstuff(\@hist);

sub isc2i
{
    my ($elt) = @_;
    return @$elt == 2;
}

sub isagc
{
    my ($elt) = @_;
    return @$elt == 3;
}

sub recentagcs
{
    my ($hist, $idx) = @_;
    my $pivot = $hist->[$idx];
    my @fnd;

    # search backwards
    my $i = $idx - 1;
    while($i >= 0){
        my $x = $hist->[$i--];
        unless(freshentry($pivot, $x)){ last }
        if(isagc($x)){ unshift @fnd, $hist; }
    }

    # search forwards
    $i = $idx + 1;
    while($i <= $#$hist){
        my $x = $hist->[$i++];
        unless(freshentry($pivot, $x)){ last }
        if(isagc($x)){ push @fnd, $hist; }
    }

    return \@fnd;
}

my $FRESHMS = 50;
sub freshentry
{
    my ($l, $r) = @_;
    # timestamps are the first elem
    return (abs($l->[0] - $r->[0]) <= $FRESHMS);
}

sub calcstuff
{
    my ($hist) = @_;
    for my $i (0 .. $#$hist){
        my $log = $hist->[$i];
        if(isc2i($log)){
            my $agcs = recentagcs($hist, $i);
            for my $agc (@$agcs){
                ## ... etc ...
            }
        }
    }
}