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<?php
/**
* PHP Reader Library
*
* Copyright (c) 2008 The PHP Reader Project Workgroup. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the project workgroup nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @package php-reader
* @subpackage ID3
* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
* @license http://code.google.com/p/php-reader/wiki/License New BSD License
* @version $Id: SIGN.php 105 2008-07-30 14:56:47Z svollbehr $
* @since ID3v2.4.0
*/
/**#@+ @ignore */
require_once("ID3/Frame.php");
/**#@-*/
/**
* This frame enables a group of frames, grouped with the
* <i>Group identification registration</i>, to be signed. Although signatures
* can reside inside the registration frame, it might be desired to store the
* signature elsewhere, e.g. in watermarks. There may be more than one signature
* frame in a tag, but no two may be identical.
*
* @package php-reader
* @subpackage ID3
* @author Sven Vollbehr <svollbehr@gmail.com>
* @author Ryan Butterfield <buttza@gmail.com>
* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
* @license http://code.google.com/p/php-reader/wiki/License New BSD License
* @version $Rev: 105 $
* @since ID3v2.4.0
*/
final class ID3_Frame_SIGN extends ID3_Frame
{
/** @var integer */
private $_group;
/** @var string */
private $_signature;
/**
* Constructs the class with given parameters and parses object related data.
*
* @param Reader $reader The reader object.
* @param Array $options The options array.
*/
public function __construct($reader = null, &$options = array())
{
parent::__construct($reader, $options);
if ($reader === null)
return;
$this->_group = Transform::fromUInt8(substr($this->_data, 0, 1));
$this->_signature = substr($this->_data, 1);
}
/**
* Returns the group symbol byte.
*
* @return integer
*/
public function getGroup() { return $this->_group; }
/**
* Sets the group symbol byte.
*
* @param integer $group The group symbol byte.
*/
public function setGroup($group) { $this->_group = $group; }
/**
* Returns the signature binary data.
*
* @return string
*/
public function getSignature() { return $this->_signature; }
/**
* Sets the signature binary data.
*
* @param string $signature The signature binary data string.
*/
public function setSignature($signature) { $this->_signature = $signature; }
/**
* Returns the frame raw data.
*
* @return string
*/
public function __toString()
{
$this->setData(Transform::toUInt8($this->_group) . $this->_signature);
return parent::__toString();
}
}
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