165d162582
git-svn-id: http://php-reader.googlecode.com/svn/trunk@11 51a70ab9-7547-0410-9469-37e369ee0574
112 lines
3.8 KiB
PHP
112 lines
3.8 KiB
PHP
<?php
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/**
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* PHP Reader Library
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the BEHR Software Systems nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package php-reader
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* @subpackage ID3
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* @copyright Copyright (c) 2008 BEHR Software Systems
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* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
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* @version $Id$
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*/
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/**#@+ @ignore */
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require_once("ID3/Frame.php");
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/**#@-*/
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/**
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* The <i>Audio encryption</i> indicates if the actual audio stream is
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* encrypted, and by whom.
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*
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* The identifier is a URL containing an email address, or a link to a location
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* where an email address can be found, that belongs to the organisation
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* responsible for this specific encrypted audio file. Questions regarding the
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* encrypted audio should be sent to the email address specified. There may be
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* more than one AENC frame in a tag, but only one with the same owner
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* identifier.
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*
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* @package php-reader
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* @subpackage ID3
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* @author Sven Vollbehr <sven.vollbehr@behrss.eu>
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* @copyright Copyright (c) 2008 BEHR Software Systems
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* @license http://www.opensource.org/licenses/bsd-license.php New BSD License
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* @version $Rev$
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*/
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final class ID3_Frame_AENC extends ID3_Frame
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{
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/** @var string */
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private $_id;
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/** @var integer */
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private $_previewStart;
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/** @var integer */
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private $_previewLength;
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/**
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* Constructs the class with given parameters and parses object related data.
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*
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* @param Reader $reader The reader object.
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*/
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public function __construct($reader)
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{
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parent::__construct($reader);
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list($this->_id, $this->_data) = preg_split("/\\x00/", $this->_data, 2);
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$this->_previewStart = substr($this->_data, 0, 2);
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$this->_previewLength = substr($this->_data, 2, 2);
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$this->_data = substr($this->_data, 4);
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}
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/**
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* Returns the owner identifier string.
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*
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* @return string
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*/
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public function getIdentifier() { return $this->_id; }
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/**
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* Returns the pointer to an unencrypted part of the audio in frames.
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*
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* @return integer
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*/
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public function getPreviewStart() { return $this->_previewStart; }
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/**
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* Returns the length of the preview in frames.
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*
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* @return integer
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*/
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public function getPreviewLength() { return $this->_previewLength; }
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/**
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* Returns the encryption info.
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*
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* @return string
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*/
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public function getData() { return $this->_data; }
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}
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