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Add support for ISO23001-7 Common encryption in ISO base media file format files

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git-svn-id: http://php-reader.googlecode.com/svn/trunk@274 51a70ab9-7547-0410-9469-37e369ee0574
This commit is contained in:
svollbehr@gmail.com
2012-11-28 19:03:18 +00:00
parent 249dfca2a7
commit 2f7a44fc33
2 changed files with 338 additions and 0 deletions
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158
src/Zend/Media/Iso14496/Box/Pssh.php Normal file
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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* 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.
*
* @category Zend
* @package Zend_Media
* @subpackage ISO14496
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**#@+ @ignore */
require_once 'Zend/Media/Iso14496/FullBox.php';
/**#@-*/
/**
* The <i>PSSH Box</i> contains information needed by a Content Protection
* System to play back the content. The data format is specified by the system
* identified by the ‘pssh’ parameter SystemID, and is considered opaque for the
* purposes of this specification.
*
* The data encapsulated in the Data field may be read by the identified
* Content Protection System to enable decryption key acquisition and decryption
* of media data. For license/rights-based systems, the header information may
* include data such as the URL of license server(s) or rights issuer(s) used,
* embedded licenses/rights, and/or other protection system specific metadata.
*
* A single file may be constructed to be playable by multiple key and digital
* rights management (DRM) systems, by including one Protection System Specific
* Header box for each system supported. Readers that process such presentations
* shall match the SystemID field in this box to the SystemID(s) of the DRM
* System(s) they support, and select the matching Protection System Specific
* Header box(es) for retrieval of Protection System Specific information
* interpreted or created by that DRM system.
*
* @category Zend
* @package Zend_Media
* @subpackage ISO14496
* @author Sven Vollbehr <sven@vollbehr.eu>
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
final class Zend_Media_Iso14496_Box_Pssh extends Zend_Media_Iso14496_FullBox
{
private $_systemId;
private $_data;
/**
* Constructs the class with given parameters and reads box related data
* from the ISO Base Media file.
*
* @param Zend_Io_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->_systemId = $this->_reader->readGuid();
$dataSize = $this->_reader->readUInt32BE();
$this->_data = $reader->read($dataSize);
}
/**
* Returns a UUID that uniquely identifies the content protection system
* that this header belongs to.
*
* @return string
*/
public function getSystemId()
{
return $this->_systemId;
}
/**
* Sets a UUID that uniquely identifies the content protection system
* that this header belongs to.
*
* @param string $systemId The system ID.
*/
public function setSystemId($systemId)
{
$this->_systemId = $systemId;
}
/**
* Returns the content protection system specific data.
*
* @return string
*/
public function getData()
{
return $this->_data;
}
/**
* Sets the content protection system specific data.
*
* @param string $data The data.
*/
public function setData($data)
{
$this->_data = $data;
}
/**
* Returns the box heap size in bytes.
*
* @return integer
*/
public function getHeapSize()
{
return parent::getHeapSize() + 20 + strlen($this->_data);
}
/**
* Writes the box data.
*
* @param Zend_Io_Writer $writer The writer object.
* @return void
*/
protected function _writeData($writer)
{
parent::_writeData($writer);
$writer->writeGuid($this->_systemId)
->writeUInt32BE(strlen($this->_data))
->write($this->_data);
}
}

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src/Zend/Media/Iso14496/Box/Tenc.php Normal file
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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* 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.
*
* @category Zend
* @package Zend_Media
* @subpackage ISO14496
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**#@+ @ignore */
require_once 'Zend/Media/Iso14496/FullBox.php';
/**#@-*/
/**
* The <i>Track Encryption Box</i> contains default values for the IsEncrypted
* flag, IV_size, and KID for the entire track. These values are used as the
* encryption parameters for the samples in this track unless overridden by the
* sample group description associated with a group of samples. For files with
* only one key per track, this box allows the basic encryption parameters to be
* specified once per track instead of being repeated per sample.
*
* @category Zend
* @package Zend_Media
* @subpackage ISO14496
* @author Sven Vollbehr <sven@vollbehr.eu>
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
final class Zend_Media_Iso14496_Box_Tenc extends Zend_Media_Iso14496_FullBox
{
private $_defaultEncryption;
private $_defaultIVSize;
private $_defaultKID;
/**
* Constructs the class with given parameters and reads box related data
* from the ISO Base Media file.
*
* @param Zend_Io_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->_defaultEncryption = $this->_reader->readUInt24BE();
$this->_defaultIVSize = $this->_reader->readUInt8();
$this->_defaultKID = $this->_reader->read(16);
}
/**
* Returns the encryption flag which indicates the default encryption state
* of the samples in the track.
*
* This flag is the identifier of the encryption state of the samples in the
* track or group of samples. This flag takes the following values:
*
* o 0x0: Not encrypted
* o 0x1: Encrypted using AES 128-bit in CTR mode
* o 0x000002 – 0xFFFFFF: Reserved
*
* @return integer
*/
public function getDefaultEncryption()
{
return $this->_defaultEncryption;
}
/**
* Sets the encryption flag which indicates the default encryption state
* of the samples in the track.
*
* @param integer $defaultEncryption The default encryption flag.
*/
public function setDefaultEncryption($defaultEncryption)
{
$this->_defaultEncryption = $defaultEncryption;
}
/**
* Returns the default Initialization Vector size in bytes.
*
* This field is the size in bytes of the InitializationVector field.
* Supported values:
*
* o 0 – If the IsEncrypted flag is 0x0 (Not Encrypted).
* o 8 – Specifies 64-bit initialization vectors.
* o 16 – Specifies 128-bit initialization vectors.
*
* @return integer
*/
public function getDefaultIVSize()
{
return $this->_defaultIVSize;
}
/**
* Sets the default Initialization Vector size in bytes.
*
* @param integer $defaultIVSize The default vector size in bytes.
*/
public function setDefaultIVSize($defaultIVSize)
{
$this->_defaultIVSize = $defaultIVSize;
}
/**
* Returns the default key identifier used for samples in this track.
*
* @return string
*/
public function getDefaultKID()
{
return $this->_defaultKID;
}
/**
* Sets the default key identifier used for samples in this track.
*
* @param string $defaultKID The default key identifier.
*/
public function setDefaultKID($defaultKID)
{
$this->_defaultKID = $defaultKID;
}
/**
* Returns the box heap size in bytes.
*
* @return integer
*/
public function getHeapSize()
{
return parent::getHeapSize() + 20;
}
/**
* Writes the box data.
*
* @param Zend_Io_Writer $writer The writer object.
* @return void
*/
protected function _writeData($writer)
{
parent::_writeData($writer);
$writer->writeUInt24BE($this->_defaultEncryption)
->writeUInt8($this->_defaultIVSize)
->write($this->_defaultKID);
}
}