# ==========================================================================
#
# ZoneMinder ONVIF Control Protocol Module
# Based on the Netcat onvif script by Andrew Bauer (knnniggett@users.sourceforge.net)
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# ==========================================================================
#
# This module contains the implementation of onvif protocol
#
package ZoneMinder::Control::onvif;

use 5.006;
use strict;
use warnings;
use MIME::Base64;
use Digest::SHA;
use DateTime;
use URI;
use Data::Dumper;

require ZoneMinder::Base;
require ZoneMinder::Control;

our @ISA = qw(ZoneMinder::Control);

our %CamParams = ();

our ($profileToken, $address, $port, %identity);
my ( $controlUri, $scheme );

# ==========================================================================
#
# This script sends ONVIF compliant commands and may work with other cameras
#
# Configuration options (Source->Control tab)
# - Control Type: ONVIF
# - Control Device: prof0 - this is dependant on camera. It maybe required to sniff the traffic using Wireshark to find this out. If left empty value of "000" will be used.
# - Control Address: <scheme>://[<user>:<password>@]<ip_or_host_of_onvif_enabled_camera>[:port][control_uri]
# - Auto Stop Timeout: 1.00 - how long shold the camera move for when move command is issued. Value of 1.00 means 1s.
# - Track Motion: NOT IMPLEMENTED - this suppose to be a feature for automatic camera scrolling (moving).
# - Track Delay: NOT IMPLEMENTED
# - Return Location: Home|Preset 1 - NOT IMPLEMENTED
#
# Absolute minimum required supported "Control Address" would be:
#   - 192.168.1.199
# This will use the following defaults:
#   - port: 80
#   - Control Device: 000
#   - Control URI: /onvif/PTZ
#   - No authentication
#   - No Auto Stop Timeout (on movement command the camera will keep moving until it reaches it's edge)
#
# Example Control Address values:
#   - http://user:password@192.168.1.199:888/onvif/device_control :Connect to camera at IP: 192.168.1.199 on port 888 with "username" and "password" credentials using /onvif/device_control URI
#   - user:password@192.168.1.199                                 :Connect to camera at IP: 192.168.1.199 on default port 80 with "username" and "password" credentials using default /onvif/PTZ URI
#   - 192.168.1.199                                               :Connect to camera at IP: 192.168.1.199 without any authentication and use the default /onvif/PTZ URI over HTTP.
#
# ==========================================================================

use ZoneMinder::Logger qw(:all);
use ZoneMinder::Config qw(:all);

use Time::HiRes qw( usleep );

sub open {
  my $self = shift;

  $self->loadMonitor();

  $profileToken = $self->{Monitor}->{ControlDevice};
  if ($profileToken eq '') { $profileToken = '000'; }

  parseControlAddress($self->{Monitor}->{ControlAddress});

  use LWP::UserAgent;
  $self->{ua} = LWP::UserAgent->new;
  $self->{ua}->agent('ZoneMinder Control Agent/'.ZoneMinder::Base::ZM_VERSION);

  $self->{state} = 'open';
}

sub parseControlAddress {
    
    my $controlAddress = shift;
    
    #make sure url start with a scheme
    if ( $controlAddress !~ m'^https?://') {
        $scheme = "http";
        $controlAddress = $scheme."://".$controlAddress;
    }     

    my $url = URI->new($controlAddress);

    #set the scheme
    $scheme = $url->scheme;

    #If we have authinfo
    if ($url->userinfo){
        my ($username , $password) = split /:/, $url->userinfo;
        %identity = (username => $username, password => $password);
    }
    
    #If we have no explicitly defined port
    if (!$url->port){
        $port = $url->default_port;
    } else {
        $port = $url->port;
    }
    
    if (!$url->path){
        $controlUri = "/onvif/PTZ";
    } else {
        $controlUri = $url->path;
    }

    $address = $url->host;
}

sub digestBase64 {
  my ($nonce, $date, $password) = @_;
  my $shaGenerator = Digest::SHA->new(1);
  $shaGenerator->add($nonce . $date . $password);
  return encode_base64($shaGenerator->digest, '');
}

sub authentificationHeader {
  my ($username, $password) = @_;
  my @set = ('0' ..'9', 'A' .. 'Z', 'a' .. 'z');
  my $nonce = join '' => map $set[rand @set], 1 .. 20;
 
  my $nonceBase64 = encode_base64($nonce, '');
  my $currentDate = DateTime->now()->iso8601().'Z';

  return '
<s:Header>
  <Security s:mustUnderstand="1" xmlns="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
    <UsernameToken xmlns="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
      <Username>' . $username . '</Username>
      <Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordDigest">' . digestBase64($nonce, $currentDate, $password) . '</Password>
      <Nonce EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary">' . $nonceBase64 . '</Nonce>
      <Created xmlns="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">' . $currentDate . '</Created>
    </UsernameToken>
  </Security>
</s:Header>';
}

sub sendCmd {
  my $self = shift;
  my $cmd = shift;
  my $msg_body = shift;
  my $content_type = shift;
  my $result = undef;
  
  my $msg = '
    <s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">'. 
        ((%identity) ? authentificationHeader($identity{username}, $identity{password}) : '') .
    $msg_body . '
    </s:Envelope>';

  $self->printMsg($cmd, 'Tx');

  my $server_endpoint = $scheme.'://'.$address.':'.$port.$controlUri;
  my $req = HTTP::Request->new(POST => $server_endpoint);
  $req->header('content-type' => $content_type);
  $req->header('Host' => $address . ':' . $port);
  $req->header('content-length' => length($msg));
  $req->header('accept-encoding' => 'gzip, deflate');
  $req->header('connection' => 'Close');
  $req->content($msg);


  my $res = $self->{ua}->request($req);

  if ( $res->is_success ) {
    $result = !undef;
  } else {
    Error("After sending PTZ command, camera returned the following error:'".$res->status_line()."'\nMSG:$msg\nResponse:".$res->content);
  }
  return $result;
}

sub getCamParams {
  my $self = shift;
  my $msg = '
	<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">
		<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
			<GetImagingSettings xmlns="http://www.onvif.org/ver20/imaging/wsdl">
				<VideoSourceToken>000</VideoSourceToken>
			</GetImagingSettings>
		</s:Body>
	</s:Envelope>';

  my $server_endpoint = $scheme.'://'.$address.':'.$port.'/onvif/imaging';
  
  my $req = HTTP::Request->new(POST => $server_endpoint);
  $req->header('content-type' => 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/imaging/wsdl/GetImagingSettings"');
  $req->header('Host' => $address . ':' . $port);
  $req->header('content-length' => length($msg));
  $req->header('accept-encoding' => 'gzip, deflate');
  $req->header('connection' => 'Close');
  $req->content($msg);

  my $res = $self->{ua}->request($req);

  if ( $res->is_success ) {
    # We should really use an xml or soap library to parse the xml tags
    my $content = $res->decoded_content;

    if ( $content =~ /.*<tt:(Brightness)>(.+)<\/tt:Brightness>.*/ ) {
      $CamParams{$1} = $2;
    }
    if ( $content =~ /.*<tt:(Contrast)>(.+)<\/tt:Contrast>.*/ ) {
      $CamParams{$1} = $2;
    }
  } else {
    Error("Unable to retrieve camera image settings:'".$res->status_line()."'");
  }
}

#autoStop
#This makes use of the ZoneMinder Auto Stop Timeout on the Control Tab
sub autoStop {
  my $self = shift;
  my $autostop = shift;
  my $iszoom = shift;

  if ( $autostop ) {
    Debug('Auto Stop');
    my $cmd = $controlUri;
    my $msg_body;
    if( $iszoom) {
	    $msg_body = '
		    <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
			<Stop xmlns="http://www.onvif.org/ver20/ptz/wsdl">
				<ProfileToken>'.$profileToken.'</ProfileToken>
				<PanTilt>
				    false
				</PanTilt>
				<Zoom>
				    true
				</Zoom>
			</Stop>
		    </s:Body>';
    } else {
	    $msg_body = '
		    <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
			<Stop xmlns="http://www.onvif.org/ver20/ptz/wsdl">
				<ProfileToken>'.$profileToken.'</ProfileToken>
				<PanTilt>
				    true
				</PanTilt>
				<Zoom>
				    false
				</Zoom>
			</Stop>
		    </s:Body>';
    }

    my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
    usleep($autostop);
    $self->sendCmd($cmd, $msg_body, $content_type);
  }
}

# Reboot
sub reboot {
  Debug('Camera reboot');
  my $self = shift;
  my $cmd = '';
  my $msg_body = << "END_MESSAGE";
        <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
                <SystemReboot xmlns="http://www.onvif.org/ver10/device/wsdl"/>
        </s:Body>
END_MESSAGE

  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver10/device/wsdl/SystemReboot"';
  $self->sendCmd($cmd, $msg_body, $content_type);

}

# Reset(Reboot) the Camera
sub reset {
  Debug('Camera Reset');
  my $self = shift;
  my $cmd = '';
  my $msg_body = << "END_MESSAGE"; 
 	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<SystemReboot xmlns="http://www.onvif.org/ver10/device/wsdl"/>
	</s:Body>
END_MESSAGE

  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver10/device/wsdl/SystemReboot"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

sub moveMap {
  my $self = shift;
  my $params = shift;
  my $x = $self->getParam($params,'xcoord');
  my $y = $self->getParam($params,'ycoord');
  Debug("Move map to $x x $y");

  my $cmd = $controlUri;
  my $msg_body ='
    <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
        <AbsoluteMove xmlns="http://www.onvif.org/ver20/ptz/wsdl">
            <ProfileToken>' . $profileToken . '</ProfileToken>
            <Position>
                <PanTilt x="'.$x.'" y="'.$y.'" xmlns="http://www.onvif.org/ver10/schema"/>
            </Position>
            <Speed>
                <Zoom x="1" xmlns="http://www.onvif.org/ver10/schema"/>
            </Speed>
        </AbsoluteMove>
    </s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

sub moveRel {
  my $self = shift;
  my $params = shift;
  my $x = $self->getParam($params,'xcoord');
  my $speed = $self->getParam($params,'speed');
  my $y = $self->getParam($params,'ycoord');
  Debug("Move rel to $x x $y");

  my $cmd = $controlUri;
  my $msg_body ='
    <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
        <RelativeMove xmlns="http://www.onvif.org/ver20/ptz/wsdl">
            <ProfileToken>' . $profileToken . '</ProfileToken>
            <Translation>
                <PanTilt x="'.$x.'" y="'.$y.'" xmlns="http://www.onvif.org/ver10/schema" space="http://www.onvif.org/ver10/tptz/PanTiltSpaces/PositionGenericSpace"/>
                <Zoom x="1"/>
            </Translation>
        </RelativeMove>
    </s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

sub moveCamera {
  my $type = shift;
  my $x = shift;
  my $y = shift;
  my $msg_move_body = '';

  if ( $type eq 'move' ) {
  	$msg_move_body = '
  	    <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  	        <ContinuousMove xmlns="http://www.onvif.org/ver20/ptz/wsdl">
                <ProfileToken>'.$profileToken.'</ProfileToken>
                    <Velocity>
                        <PanTilt
  	                      x="'.$x.'"
  	                      y="'.$y.'"
  	                      xmlns="http://www.onvif.org/ver10/schema"/>
                    </Velocity>
            </ContinuousMove>
        </s:Body>';

  } elsif ( $type eq 'zoom' ) {
  	$msg_move_body = '
		<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
			<ContinuousMove xmlns="http://www.onvif.org/ver20/ptz/wsdl">
				<ProfileToken>'.$profileToken.'</ProfileToken>
				<Velocity>
					<Zoom 
						x="'.$x.'" 
						xmlns="http://www.onvif.org/ver10/schema"/>
				</Velocity>
			</ContinuousMove>
        </s:Body>';
  }

  return $msg_move_body;
}

#Up Arrow
sub moveConUp {
  Debug('Move Up');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("move", "0","0.5");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},0);
}


#Down Arrow
sub moveConDown {
  Debug('Move Down');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("move","0","-0.5");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},0);
}

#Left Arrow
sub moveConLeft {
  Debug('Move Left');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("move","-0.49","0");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},0);
}

#Right Arrow
sub moveConRight {
  Debug('Move Right');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("move","0.49","0");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},0);
}

#Zoom In
sub zoomConTele {
  Debug('Zoom Tele');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("zoom","0.49","0");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},1);
}

#Zoom Out
sub zoomConWide {
  Debug('Zoom Wide');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("zoom","-0.49","0");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},1);
}

sub zoomStop {
  Debug('Zoom Stop');
  my $self = shift;
  my $cmd = $controlUri;
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},1);
  Error('Zoom Stop not implemented');
}



#Diagonally Up Right Arrow
#This camera does not have builtin diagonal commands so we emulate them
sub moveConUpRight {
  Debug('Move Diagonally Up Right');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("move","0.5","0.5");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},0);
}

#Diagonally Down Right Arrow
#This camera does not have builtin diagonal commands so we emulate them
sub moveConDownRight {
  Debug('Move Diagonally Down Right');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("move","0.5","-0.5");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},0);
}

#Diagonally Up Left Arrow
#This camera does not have builtin diagonal commands so we emulate them
sub moveConUpLeft {
  Debug('Move Diagonally Up Left');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("move","-0.5","0.5");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},0);
}

#Diagonally Down Left Arrow
#This camera does not have builtin diagonal commands so we emulate them
sub moveConDownLeft {
  Debug('Move Diagonally Down Left');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = moveCamera("move","-0.5","-0.5");
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
  $self->autoStop($self->{Monitor}->{AutoStopTimeout},0);
}

#Stop
sub moveStop {
  Debug('Move Stop');
  my $self = shift;
  my $cmd = $controlUri;
  my $msg_body = '
	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<Stop xmlns="http://www.onvif.org/ver20/ptz/wsdl">
			<ProfileToken>'.$profileToken.'</ProfileToken>
				<PanTilt>true</PanTilt>
				<Zoom>true</Zoom>
		</Stop>
	</s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/ContinuousMove"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

#Set Camera Preset
sub presetSet {
  my $self = shift;
  my $params = shift;
  my $preset = $self->getParam($params, 'preset');
  Debug("Set Preset $preset");
  my $cmd = $controlUri;
  my $msg_body ='
	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<SetPreset xmlns="http://www.onvif.org/ver20/ptz/wsdl">
			<ProfileToken>' . $profileToken . '</ProfileToken>
			<PresetToken>'.$preset.'</PresetToken>
		</SetPreset>
	</s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/SetPreset"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

#Recall Camera Preset
sub presetGoto {
  my $self = shift;
  my $params = shift;
  my $preset = $self->getParam($params, 'preset');

  Debug("Goto Preset $preset");
  my $cmd = $controlUri;
  my $msg_body ='
	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<GotoPreset xmlns="http://www.onvif.org/ver20/ptz/wsdl">
			<ProfileToken>' . $profileToken . '</ProfileToken>
			<PresetToken>'.$preset.'</PresetToken>
		</GotoPreset>
	</s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/GotoPreset"';
  $self->sendCmd( $cmd, $msg_body, $content_type );
}

#Recall Camera Preset
sub presetHome {
  my $self = shift;
  my $params = shift;

  Debug("Goto Home preset");
  my $cmd = $controlUri;
  my $msg_body ='
	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<GotoHomePosition xmlns="http://www.onvif.org/ver20/ptz/wsdl">
			<ProfileToken>' . $profileToken . '</ProfileToken>
		</GotoHomePosition>
	</s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/ptz/wsdl/GotoPreset"';
  $self->sendCmd( $cmd, $msg_body, $content_type );
}

#Horizontal Patrol
#To be determined if this camera supports this feature
sub horizontalPatrol {
  Debug('Horizontal Patrol');
  my $self = shift;
  my $cmd = '';
  my $msg ='';
  my $content_type = '';
  # $self->sendCmd( $cmd, $msg, $content_type );
  Error('PTZ Command not implemented in control script.');
}

#Horizontal Patrol Stop
#To be determined if this camera supports this feature
sub horizontalPatrolStop {
  Debug('Horizontal Patrol Stop');
  my $self = shift;
  my $cmd = '';
  my $msg ='';
  my $content_type = '';
  #    $self->sendCmd( $cmd, $msg, $content_type );
  Error('PTZ Command not implemented in control script.');
}

# Increase Brightness
sub irisAbsOpen {
  Debug("Iris $CamParams{Brightness}");
  my $self = shift;
  my $params = shift;
  $self->getCamParams() unless($CamParams{Brightness});
  my $step = $self->getParam($params, 'step');
  my $max = 100;

  $CamParams{Brightness} += $step;
  $CamParams{Brightness} = $max if ($CamParams{Brightness} > $max);

  my $cmd = 'onvif/imaging';
  my $msg_body ='
	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<SetImagingSettings xmlns="http://www.onvif.org/ver20/imaging/wsdl">
			<VideoSourceToken>000</VideoSourceToken>
			<ImagingSettings>
				<Brightness xmlns="http://www.onvif.org/ver10/schema">'.$CamParams{Brightness}.'</Brightness>
			</ImagingSettings>
			<ForcePersistence>true</ForcePersistence>
		</SetImagingSettings>
	</s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/imaging/wsdl/SetImagingSettings"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

# Decrease Brightness
sub irisAbsClose {
  Debug("Iris $CamParams{Brightness}");
  my $self = shift;
  my $params = shift;
  $self->getCamParams() unless($CamParams{brightness});
  my $step = $self->getParam($params, 'step');
  my $min = 0;

  $CamParams{Brightness} -= $step;
  $CamParams{Brightness} = $min if ($CamParams{Brightness} < $min);

  my $cmd = 'onvif/imaging';
  my $msg_body ='
	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<SetImagingSettings xmlns="http://www.onvif.org/ver20/imaging/wsdl">
			<VideoSourceToken>000</VideoSourceToken>
			<ImagingSettings>
				<Brightness xmlns="http://www.onvif.org/ver10/schema">'.$CamParams{Brightness}.'</Brightness>
			</ImagingSettings>
			<ForcePersistence>true</ForcePersistence>
		</SetImagingSettings>
	</s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/imaging/wsdl/SetImagingSettings"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

# Increase Contrast
sub whiteAbsIn {
  Debug("Iris $CamParams{Contrast}");
  my $self = shift;
  my $params = shift;
  $self->getCamParams() unless($CamParams{Contrast});
  my $step = $self->getParam($params, 'step');
  my $max = 100;

  $CamParams{Contrast} += $step;
  $CamParams{Contrast} = $max if ($CamParams{Contrast} > $max);

  my $cmd = 'onvif/imaging';
  my $msg_body ='
	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<SetImagingSettings xmlns="http://www.onvif.org/ver20/imaging/wsdl">
			<VideoSourceToken>000</VideoSourceToken>
			<ImagingSettings>
				<Contrast xmlns="http://www.onvif.org/ver10/schema">'.$CamParams{Contrast}.'</Contrast>
			</ImagingSettings>
			<ForcePersistence>true</ForcePersistence>
		</SetImagingSettings>
    </s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/imaging/wsdl/SetImagingSettings"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

# Decrease Contrast
sub whiteAbsOut {
  Debug("Iris $CamParams{Contrast}");
  my $self = shift;
  my $params = shift;
  $self->getCamParams() unless($CamParams{Contrast});
  my $step = $self->getParam($params, 'step');
  my $min = 0;

  $CamParams{Contrast} -= $step;
  $CamParams{Contrast} = $min if ($CamParams{Contrast} < $min);

  my $cmd = 'onvif/imaging';
  my $msg_body ='
	<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
		<SetImagingSettings xmlns="http://www.onvif.org/ver20/imaging/wsdl">
			<VideoSourceToken>000</VideoSourceToken>
			<ImagingSettings>
				<Contrast xmlns="http://www.onvif.org/ver10/schema">'.$CamParams{Contrast}.'</Contrast>
			</ImagingSettings>
			<ForcePersistence>true</ForcePersistence>
		</SetImagingSettings>
	</s:Body>';
  my $content_type = 'application/soap+xml; charset=utf-8; action="http://www.onvif.org/ver20/imaging/wsdl/SetImagingSettings"';
  $self->sendCmd($cmd, $msg_body, $content_type);
}

1;
__END__