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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: FTYP.php 92 2008-05-10 13:43:14Z svollbehr $
*/
/**#@+ @ignore */
require_once("ISO14496/Box.php");
/**#@-*/
/**
* The <i>File Type Box</i> is placed as early as possible in the file (e.g.
* after any obligatory signature, but before any significant variable-size
* boxes such as a {@link ISO14496_Box_MOOV Movie Box}, {@link ISO14496_Box_MDAT
* Media Data Box}, or {@link ISO14496_Box_FREE Free Space}). It identifies
* which specification is the <i>best use</i> of the file, and a minor version
* of that specification; and also a set of others specifications to which the
* file complies.
*
* The minor version is informative only. It does not appear for
* compatible-brands, and must not be used to determine the conformance of a
* file to a standard. It may allow more precise identification of the major
* specification, for inspection, debugging, or improved decoding.
*
* The type <i>isom</i> (ISO Base Media file) is defined as identifying files
* that conform to the first version of the ISO Base Media File Format. More
* specific identifiers can be used to identify precise versions of
* specifications providing more detail. This brand is not be used as the major
* brand; this base file format should be derived into another specification to
* be used. There is therefore no defined normal file extension, or mime type
* assigned to this brand, nor definition of the minor version when <i>isom</i>
* is the major brand.
*
* Files would normally be externally identified (e.g. with a file extension or
* mime type) that identifies the <i>best use</i> (major brand), or the brand
* that the author believes will provide the greatest compatibility.
*
* The brand <i>iso2</i> shall be used to indicate compatibility with the
* amended version of the ISO Base Media File Format; it may be used in addition
* to or instead of the <i>isom</i> brand and the same usage rules apply. If
* used without the brand <i>isom</i> identifying the first version of the
* specification, it indicates that support for some or all of the technology
* introduced by the amended version of the ISO Base Media File Format is
* required.
*
* The brand <i>avc1</i> shall be used to indicate that the file is conformant
* with the <i>AVC Extensions</i>. If used without other brands, this implies
* that support for those extensions is required. The use of <i>avc1</i> as a
* major-brand may be permitted by specifications; in that case, that
* specification defines the file extension and required behavior.
*
* If a Meta-box with an MPEG-7 handler type is used at the file level, then the
* brand <i>mp71</i> is a member of the compatible-brands list in the file-type
* box.
*
* @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_FTYP extends ISO14496_Box
{
/** @var integer */
private $_majorBrand;
/** @var integer */
private $_minorVersion;
/** @var integer */
private $_compatibleBrands = array();
/**
* 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, &$options = array())
{
parent::__construct($reader, $options);
$this->_majorBrand = $this->_reader->readString8(4);
$this->_minorVersion = $this->_reader->readUInt32BE();
while ($this->_reader->getOffset() < $this->getSize())
if (($brand = $this->_reader->readString8(4)) != "")
$this->_compatibleBrands[] = $brand;
}
/**
* Returns the major version brand.
*
* @return string
*/
public function getMajorBrand() { return $this->_majorBrand; }
/**
* Returns the minor version number.
*
* @return integer
*/
public function getMinorVersion() { return $this->_minorVersion; }
/**
* Returns the array of compatible version brands.
*
* @return Array
*/
public function getCompatibleBrands() { return $this->_compatibleBrands; }
}
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