rik/plibreader
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add ISO 14496 boxes

Browse Source 
git-svn-id: http://php-reader.googlecode.com/svn/branches/zend@160 51a70ab9-7547-0410-9469-37e369ee0574
This commit is contained in:
svollbehr
2010-02-18 14:39:53 +00:00
parent c620ac8325
commit 915200d4c1
14 changed files with 2064 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

164
src/Zend/Media/Iso14496/Box/Stsz.php Normal file
View File

@@ -0,0 +1,164 @@
<?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 ISO 14496
* @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>Sample Size Box</i> contains the sample count and a table giving the
* size in bytes of each sample. This allows the media data itself to be
* unframed. The total number of samples in the media is always indicated in the
* sample count.
*
* There are two variants of the sample size box. The first variant has a fixed
* size 32-bit field for representing the sample sizes; it permits defining a
* constant size for all samples in a track. The second variant permits smaller
* size fields, to save space when the sizes are varying but small. One of these
* boxes must be present; the first version is preferred for maximum
* compatibility.
*
* @category Zend
* @package Zend_Media
* @subpackage ISO 14496
* @author Sven Vollbehr <sven@vollbehr.eu>
* @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 $Id$
*/
final class Zend_Media_Iso14496_Box_Stsz extends Zend_Media_Iso14496_FullBox
{
/** @var integer */
private $_sampleSize;
/** @var Array */
private $_sampleSizeTable = array();
/**
* 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, &$options = array())
{
parent::__construct($reader, $options);
$this->_sampleSize = $this->_reader->readUInt32BE();
$sampleCount = $this->_reader->readUInt32BE();
if ($this->_sampleSize == 0) {
for ($i = 1; $i <= $sampleCount; $i++) {
$this->_sampleSizeTable[$i] = $this->_reader->readUInt32BE();
}
}
}
/**
* Returns the default sample size. If all the samples are the same size,
* this field contains that size value. If this field is set to 0, then the
* samples have different sizes, and those sizes are stored in the sample
* size table.
*
* @return integer
*/
public function getSampleSize()
{
return $this->_sampleSize;
}
/**
* Sets the default sample size. If all the samples are the same size,
* this field contains that size value. If this field is set to 0, then the
* samples have different sizes, and those sizes are stored in the sample
* size table.
*
* @param integer $sampleSize The default sample size.
*/
public function setSampleSize($sampleSize)
{
$this->_sampleSize = $sampleSize;
}
/**
* Returns an array of sample sizes specifying the size of a sample, indexed
* by its number.
*
* @return Array
*/
public function getSampleSizeTable()
{
return $this->_sampleSizeTable;
}
/**
* Sets an array of sample sizes specifying the size of a sample, indexed
* by its number.
*
* @param Array $sampleSizeTable The array of sample sizes.
*/
public function setSampleSizeTable($sampleSizeTable)
{
$this->_sampleSizeTable = $sampleSizeTable;
}
/**
* Returns the box heap size in bytes.
*
* @return integer
*/
public function getHeapSize()
{
return parent::getHeapSize() + 8 +
($this->_sampleSize == 0 ? count($this->_sampleSizeTable) * 4 : 0);
}
/**
* Writes the box data.
*
* @param Zend_Io_Writer $writer The writer object.
* @return void
*/
protected function _writeData($writer)
{
parent::_writeData($writer);
$writer->writeUInt32BE($this->_sampleSize);
$writer->writeUInt32BE($entryCount = count($this->_sampleSizeTable));
if ($this->_sampleSize == 0) {
for ($i = 1; $i <= $entryCount; $i++) {
$writer->writeUInt32BE($this->_sampleSizeTable[$i]);
}
}
}
}