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Add ISO 14496 boxes

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git-svn-id: http://php-reader.googlecode.com/svn/branches/zend@162 51a70ab9-7547-0410-9469-37e369ee0574
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svollbehr
2010-02-19 21:17:47 +00:00
parent 2151daf867
commit 559220106a
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src/Zend/Media/Iso14496/Box/Mvhd.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 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>Movie Header Box</i> defines overall information which is
* media-independent, and relevant to the entire presentation considered as a
* whole.
*
* @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_Mvhd extends Zend_Media_Iso14496_FullBox
{
/** @var integer */
private $_creationTime;
/** @var integer */
private $_modificationTime;
/** @var integer */
private $_timescale;
/** @var integer */
private $_duration;
/** @var integer */
private $_rate = 1.0;
/** @var integer */
private $_volume = 1.0;
/** @var Array */
private $_matrix = array
(0x00010000, 0, 0, 0, 0x00010000, 0, 0, 0, 0x40000000);
/** @var integer */
private $_nextTrackId;
/**
* 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, $options);
if ($this->getVersion() == 1) {
$this->_creationTime = $this->_reader->readInt64BE();
$this->_modificationTime = $this->_reader->readInt64BE();
$this->_timescale = $this->_reader->readUInt32BE();
$this->_duration = $this->_reader->readInt64BE();
} else {
$this->_creationTime = $this->_reader->readUInt32BE();
$this->_modificationTime = $this->_reader->readUInt32BE();
$this->_timescale = $this->_reader->readUInt32BE();
$this->_duration = $this->_reader->readUInt32BE();
}
$this->_rate =
((($tmp = $this->_reader->readUInt32BE()) >> 16) & 0xffff) +
(float)("0." . ((string)($tmp & 0xffff)));
$this->_volume =
((($tmp = $this->_reader->readUInt16BE()) >> 8) & 0xff) +
(float)("0." . ((string)($tmp & 0xff)));
$this->_reader->skip(10);
for ($i = 0; $i < 9; $i++) {
$this->_matrix[$i] = $this->_reader->readUInt32BE();
}
$this->_reader->skip(24);
$this->_nextTrackId = $this->_reader->readUInt32BE();
}
/**
* Returns the creation time of the presentation. The value is in seconds
* since midnight, Jan. 1, 1904, in UTC time.
*
* @return integer
*/
public function getCreationTime()
{
return $this->_creationTime;
}
/**
* Sets the creation time of the presentation in seconds since midnight,
* Jan. 1, 1904, in UTC time.
*
* @param integer $creationTime The creation time.
*/
public function setCreationTime($creationTime)
{
$this->_creationTime = $creationTime;
}
/**
* Returns the most recent time the presentation was modified. The value is
* in seconds since midnight, Jan. 1, 1904, in UTC time.
*
* @return integer
*/
public function getModificationTime()
{
return $this->_modificationTime;
}
/**
* Sets the most recent time the presentation was modified in seconds since
* midnight, Jan. 1, 1904, in UTC time.
*
* @param integer $modificationTime The most recent time the presentation
* was modified.
*/
public function setModificationTime($modificationTime)
{
$this->_modificationTime = $modificationTime;
}
/**
* Returns the time-scale for the entire presentation. This is the number of
* time units that pass in one second. For example, a time coordinate system
* that measures time in sixtieths of a second has a time scale of 60.
*
* @return integer
*/
public function getTimescale()
{
return $this->_timescale;
}
/**
* Sets the time-scale for the entire presentation. This is the number of
* time units that pass in one second. For example, a time coordinate system
* that measures time in sixtieths of a second has a time scale of 60.
*
* @param integer $timescale The time-scale for the entire presentation.
*/
public function setTimescale($timescale)
{
$this->_timescale = $timescale;
}
/**
* Returns the length of the presentation in the indicated timescale. This
* property is derived from the presentation's tracks: the value of this
* field corresponds to the duration of the longest track in the
* presentation.
*
* @return integer
*/
public function getDuration()
{
return $this->_duration;
}
/**
* Sets the length of the presentation in the indicated timescale. This
* property must be derived from the presentation's tracks: the value of
* this field must correspond to the duration of the longest track in the
* presentation.
*
* @param integer $duration The length of the presentation.
*/
public function setDuration($duration)
{
$this->_duration = $duration;
}
/**
* Returns the preferred rate to play the presentation. 1.0 is normal
* forward playback.
*
* @return integer
*/
public function getRate()
{
return $this->_rate;
}
/**
* Sets the preferred rate to play the presentation. 1.0 is normal
* forward playback.
*
* @param integer $rate The preferred play rate.
*/
public function setRate($rate)
{
$this->_rate = $rate;
}
/**
* Returns the preferred playback volume. 1.0 is full volume.
*
* @return integer
*/
public function getVolume()
{
return $this->_volume;
}
/**
* Sets the preferred playback volume. 1.0 is full volume.
*
* @param integer $volume The playback volume.
*/
public function setVolume($volume)
{
$this->_volume = $volume;
}
/**
* Returns the transformation matrix for the video; (u,v,w) are restricted
* here to (0,0,1), hex values (0,0,0x40000000).
*
* @return Array
*/
public function getMatrix()
{
return $this->_matrix;
}
/**
* Sets the transformation matrix for the video; (u,v,w) are restricted
* here to (0,0,1), hex values (0,0,0x40000000).
*
* @param Array $matrix The transformation matrix array of 9 values
*/
public function setMatrix($matrix)
{
$this->_matrix = $matrix;
}
/**
* Returns a value to use for the track ID of the next track to be added to
* this presentation. Zero is not a valid track ID value. The value is
* larger than the largest track-ID in use. If this value is equal to or
* larger than 32-bit maxint, and a new media track is to be added, then a
* search must be made in the file for a unused track identifier.
*
* @return integer
*/
public function getNextTrackId()
{
return $this->_nextTrackId;
}
/**
* Sets a value to use for the track ID of the next track to be added to
* this presentation. Zero is not a valid track ID value. The value must be
* larger than the largest track-ID in use.
*
* @param integer $nextTrackId The next track ID.
*/
public function setNextTrackId($nextTrackId)
{
$this->_nextTrackId = $nextTrackId;
}
/**
* Returns the box heap size in bytes.
*
* @return integer
*/
public function getHeapSize()
{
return parent::getHeapSize() +
($this->getVersion() == 1 ? 28 : 16) + 80;
}
/**
* Writes the box data.
*
* @param Zend_Io_Writer $writer The writer object.
* @return void
*/
protected function _writeData($writer)
{
parent::_writeData($writer);
if ($this->getVersion() == 1) {
$writer->writeInt64BE($this->_creationTime)
->writeInt64BE($this->_modificationTime)
->writeUInt32BE($this->_timescale)
->writeInt64BE($this->_duration);
} else {
$writer->writeUInt32BE($this->_creationTime)
->writeUInt32BE($this->_modificationTime)
->writeUInt32BE($this->_timescale)
->writeUInt32BE($this->_duration);
}
@list(, $rateDecimals) = explode('.', (float)$this->_rate);
@list(, $volumeDecimals) = explode('.', (float)$this->_volume);
$writer->writeUInt32BE(floor($this->_rate) << 16 | $rateDecimals)
->writeUInt16BE(floor($this->_volume) << 8 | $volumeDecimals)
->write(str_pad('', 10, "\0"));
for ($i = 0; $i < 9; $i++) {
$writer->writeUInt32BE($this->_matrix[$i]);
}
$writer->write(str_pad('', 24, "\0"))
->writeUInt32BE($this->_nextTrackId);
}
}