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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 ISO 14496
* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
* @license http://code.google.com/p/php-reader/wiki/License New BSD License
* @version $Id: HDLR.php 92 2008-05-10 13:43:14Z svollbehr $
*/
/**#@+ @ignore */
require_once("ISO14496/Box/Full.php");
/**#@-*/
/**
* The <i>Handler Reference Box</i> is within a {@link ISO14496_Box_MDIA Media
* Box} declares the process by which the media-data in the track is presented,
* and thus, the nature of the media in a track. For example, a video track
* would be handled by a video handler.
*
* This box when present within a {@link ISO14496_Box_META Meta Box}, declares
* the structure or format of the <i>meta</i> box contents.
*
* @package php-reader
* @subpackage ISO 14496
* @author Sven Vollbehr <svollbehr@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: 92 $
*/
final class ISO14496_Box_HDLR extends ISO14496_Box_Full
{
/** @var string */
private $_handlerType;
/** @var string */
private $_name;
/**
* Constructs the class with given parameters and reads box related data from
* the ISO Base Media file.
*
* @param Reader $reader The reader object.
*/
public function __construct($reader = null, &$options = array())
{
parent::__construct($reader, $options);
if ($reader === null)
return;
$this->_reader->skip(4);
$this->_handlerType = $this->_reader->read(4);
$this->_reader->skip(12);
$this->_name = $this->_reader->readString8
($this->getOffset() + $this->getSize() - $this->_reader->getOffset());
}
/**
* Returns the handler type.
*
* When present in a media box, the returned value contains one of the
* following values, or a value from a derived specification:
* o <i>vide</i> Video track
* o <i>soun</i> Audio track
* o <i>hint</i> Hint track
*
* When present in a meta box, the returned value contains an appropriate
* value to indicate the format of the meta box contents.
*
* @return integer
*/
public function getHandlerType() { return $this->_handlerType; }
/**
* Sets the handler type.
*
* When present in a media box, the value must be set to one of the following
* values, or a value from a derived specification:
* o <i>vide</i> Video track
* o <i>soun</i> Audio track
* o <i>hint</i> Hint track
*
* When present in a meta box, the value must be set to an appropriate value
* to indicate the format of the meta box contents.
*
* @param string $handlerType The handler type.
*/
public function setHandlerType($handlerType)
{
$this->_handlerType = $handlerType;
}
/**
* Returns the name string. The name is in UTF-8 characters and gives a
* human-readable name for the track type (for debugging and inspection
* purposes).
*
* @return integer
*/
public function getName() { return $this->_name; }
/**
* Sets the name string. The name must be in UTF-8 and give a human-readable
* name for the track type (for debugging and inspection purposes).
*
* @param string $name The human-readable description.
*/
public function setName($name) { $this->_name = $name; }
/**
* Returns the box raw data.
*
* @return string
*/
public function __toString($data = "")
{
return parent::__toString
("appl" . $this->_handlerType . Transform::toUInt32BE(0) .
Transform::toUInt32BE(0) . Transform::toUInt32BE(0) . $this->_name .
"\0");
}
}
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