D-Link DCS-5020L Control Script

# =========================================================================r
#
# ZoneMinder D-Link DCS-5020L IP Control Protocol Module, $Date: $, $Revision: $
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
# ==========================================================================
#
# This module contains the implementation of the D-Link DCS-5020L IP camera control
# protocol. 
#
package ZoneMinder::Control::DCS5020L;
 
use 5.006;
use strict;
use warnings;
 
require ZoneMinder::Base;
require ZoneMinder::Control;
 
our @ISA = qw(ZoneMinder::Control);
 
our $VERSION = $ZoneMinder::Base::VERSION;
 
# ==========================================================================
#
# D-Link DCS-5020L Control Protocol
#
# ==========================================================================
 
use ZoneMinder::Logger qw(:all);
use ZoneMinder::Config qw(:all);
 
use Time::HiRes qw( usleep );
 
sub new
{
    my $class = shift;
    my $id = shift;
    my $self = ZoneMinder::Control->new( $id );
    bless( $self, $class );
    srand( time() );
    return $self;
}
 
our $AUTOLOAD;
 
sub AUTOLOAD
{
    my $self = shift;
    my $class = ref($self) || croak( "$self not object" );
    my $name = $AUTOLOAD;
    $name =~ s/.*://;
    if ( exists($self->{$name}) )
    {
        return( $self->{$name} );
    }
    Fatal( "Can't access $name member of object of class $class" );
}
 
sub open
{
    my $self = shift;
 
    $self->loadMonitor();
 
    use LWP::UserAgent;
    $self->{ua} = LWP::UserAgent->new;
    $self->{ua}->agent( "ZoneMinder Control Agent/".ZM_VERSION );
 
    $self->{state} = 'open';
}
 
sub close
{
    my $self = shift;
    $self->{state} = 'closed';
}
 
sub printMsg
{
    my $self = shift;
    my $msg = shift;
    my $msg_len = length($msg);
 
    Debug( $msg."[".$msg_len."]" );
}
 
sub sendCmd
{
    my $self = shift;
    my $cmd = shift;
 
    my $result = undef;
 
    printMsg( $cmd, "Tx" );
 
    my $req = HTTP::Request->new( POST=>"http://".$self->{Monitor}->{ControlAddress}."/PANTILTCONTROL.CGI" );
    $req->content($cmd);
    my $res = $self->{ua}->request($req);
 
    if ( $res->is_success )
    {
        $result = !undef;
    }
    else
    {
        Error( "Error check failed: '".$res->status_line()."'" );
    }
 
    return( $result );
}
 
sub move
{
    my $self = shift;
    my $dir = shift;
    my $panSteps = shift;
    my $tiltSteps = shift;
 
    my $cmd = "PanSingleMoveDegree=$panSteps&TiltSingleMoveDegree=$tiltSteps&PanTiltSingleMove=$dir";
    $self->sendCmd( $cmd );
}
 
sub moveRelUpLeft
{
    my $self = shift;
    Debug( "Move Up Left" );
    $self->move( 0, 1, 1 );
}
 
sub moveRelUp
{
    my $self = shift;
    Debug( "Move Up" );
    $self->move( 1, 1, 1 );
}
 
sub moveRelUpRight
{
    my $self = shift;
    Debug( "Move Up" );
    $self->move( 2, 1, 1 );
}
 
sub moveRelLeft
{
    my $self = shift;
    Debug( "Move Left" );
    $self->move( 3, 1, 1 );
}
 
sub moveRelRight
{
    my $self = shift;
    Debug( "Move Right" );
    $self->move( 5, 1, 1 );
}
 
sub moveRelDownLeft
{
    my $self = shift;
    Debug( "Move Down" );
    $self->move( 6, 1, 1 );
}
 
sub moveRelDown
{
    my $self = shift;
    Debug( "Move Down" );
    $self->move( 7, 1, 1 );
}
 
sub moveRelDownRight
{
    my $self = shift;
    Debug( "Move Down" );
    $self->move( 8, 1, 1 );
}
 
# moves the camera to center on the point that the user clicked on in the video image. 
# This isn't extremely accurate but good enough for most purposes 
sub moveMap
{
    # if the camera moves too much or too little, try increasing or decreasing this value
    my $f = 11;
 
    my $self = shift;
    my $params = shift;
    my $xcoord = $self->getParam( $params, 'xcoord' );
    my $ycoord = $self->getParam( $params, 'ycoord' );
 
    my $hor = $xcoord * 100 / $self->{Monitor}->{Width};
    my $ver = $ycoord * 100 / $self->{Monitor}->{Height};
   
    my $direction;
    my $horSteps;
    my $verSteps;
    if ($hor < 50 && $ver < 50) {
        # up left
        $horSteps = (50 - $hor) / $f;
        $verSteps = (50 - $ver) / $f;
        $direction = 0;
    } elsif ($hor >= 50 && $ver < 50) {
        # up right
        $horSteps = ($hor - 50) / $f;
        $verSteps = (50 - $ver) / $f;
        $direction = 2;
    } elsif ($hor < 50 && $ver >= 50) {
        # down left
        $horSteps = (50 - $hor) / $f;
        $verSteps = ($ver - 50) / $f;
        $direction = 6;
    } elsif ($hor >= 50 && $ver >= 50) {
        # down right
        $horSteps = ($hor - 50) / $f;
        $verSteps = ($ver - 50) / $f;
        $direction = 8;
    }
    my $v = int($verSteps + .5);
    my $h = int($horSteps + .5);
    Debug( "Move Map to $xcoord,$ycoord, hor=$h, ver=$v with direction $direction" );
    $self->move( $direction, $h, $v );
}
 
# this clear function works, but should probably be disabled because 
# it isn't possible to set presets yet. 
sub presetClear
{
    my $self = shift;
    my $params = shift;
    my $preset = $self->getParam( $params, 'preset' );
    Debug( "Clear Preset $preset" );
    my $cmd = "ClearPosition=$preset";
    $self->sendCmd( $cmd );
}
 
# not working yet
sub presetSet
{
    my $self = shift;
    my $params = shift;
    my $preset = $self->getParam( $params, 'preset' );
    Debug( "Set Preset $preset" );
    # TODO need to first get current position $horPos and $verPos
    #my $cmd = "PanTiltHorizontal=$horPos&PanTiltVertical=$verPos&SetName=$preset&SetPosition=$preset";
    #$self->sendCmd( $cmd );
}
 
sub presetGoto
{
    my $self = shift;
    my $params = shift;
    my $preset = $self->getParam( $params, 'preset' );
    Debug( "Goto Preset $preset" );
    my $cmd = "PanTiltPresetPositionMove=$preset";
    $self->sendCmd( $cmd );
}
 
sub presetHome
{
    my $self = shift;
    Debug( "Home Preset" );
    my $cmd = "PanTiltSingleMove=4";
    $self->sendCmd( $cmd );
}
 
1;
__END__
# Below is stub documentation for your module. You'd better edit it!
 
=head1 NAME
 
ZoneMinder::Database - Perl extension for DCS-5020L
 
=head1 SYNOPSIS
 
  use ZoneMinder::Database;
  DLINK DCS-5020L
 
=head1 DESCRIPTION
 
ZoneMinder driver for the D-Link consumer camera DCS-5020L.
 
=head2 EXPORT
 
None by default.
 
 
 
=head1 SEE ALSO
 
See if there are better instructions for the DCS-5020L at
http://www.zoneminder.com/wiki/index.php/Dlink
 
=head1 AUTHOR
 
Nobody
 
=head1 COPYRIGHT AND LICENSE
 
LGPLv3
 
=cut