776aacbe3a
git-svn-id: http://php-reader.googlecode.com/svn/branches/zend@176 51a70ab9-7547-0410-9469-37e369ee0574
344 lines
10 KiB
PHP
344 lines
10 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @category Zend
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* @package Zend_Media
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* @subpackage ISO14496
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**#@+ @ignore */
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require_once 'Zend/Media/Iso14496/FullBox.php';
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/**#@-*/
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/**
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* The <i>Movie Header Box</i> defines overall information which is
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* media-independent, and relevant to the entire presentation considered as a
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* whole.
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*
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* @category Zend
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* @package Zend_Media
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* @subpackage ISO14496
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* @author Sven Vollbehr <sven@vollbehr.eu>
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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final class Zend_Media_Iso14496_Box_Mvhd extends Zend_Media_Iso14496_FullBox
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{
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/** @var integer */
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private $_creationTime;
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/** @var integer */
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private $_modificationTime;
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/** @var integer */
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private $_timescale;
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/** @var integer */
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private $_duration;
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/** @var integer */
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private $_rate = 1.0;
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/** @var integer */
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private $_volume = 1.0;
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/** @var Array */
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private $_matrix = array
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(0x00010000, 0, 0, 0, 0x00010000, 0, 0, 0, 0x40000000);
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/** @var integer */
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private $_nextTrackId;
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/**
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* Constructs the class with given parameters and reads box related data
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* from the ISO Base Media file.
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*
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* @param Zend_Io_Reader $reader The reader object.
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* @param Array $options The options array.
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*/
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public function __construct($reader, &$options = array())
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{
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parent::__construct($reader, $options);
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if ($this->getVersion() == 1) {
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$this->_creationTime = $this->_reader->readInt64BE();
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$this->_modificationTime = $this->_reader->readInt64BE();
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$this->_timescale = $this->_reader->readUInt32BE();
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$this->_duration = $this->_reader->readInt64BE();
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} else {
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$this->_creationTime = $this->_reader->readUInt32BE();
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$this->_modificationTime = $this->_reader->readUInt32BE();
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$this->_timescale = $this->_reader->readUInt32BE();
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$this->_duration = $this->_reader->readUInt32BE();
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}
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$this->_rate =
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((($tmp = $this->_reader->readUInt32BE()) >> 16) & 0xffff) +
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(float)("0." . ((string)($tmp & 0xffff)));
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$this->_volume =
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((($tmp = $this->_reader->readUInt16BE()) >> 8) & 0xff) +
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(float)("0." . ((string)($tmp & 0xff)));
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$this->_reader->skip(10);
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for ($i = 0; $i < 9; $i++) {
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$this->_matrix[$i] = $this->_reader->readUInt32BE();
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}
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$this->_reader->skip(24);
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$this->_nextTrackId = $this->_reader->readUInt32BE();
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}
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/**
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* Returns the creation time of the presentation. The value is in seconds
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* since midnight, Jan. 1, 1904, in UTC time.
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*
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* @return integer
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*/
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public function getCreationTime()
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{
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return $this->_creationTime;
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}
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/**
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* Sets the creation time of the presentation in seconds since midnight,
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* Jan. 1, 1904, in UTC time.
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*
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* @param integer $creationTime The creation time.
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*/
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public function setCreationTime($creationTime)
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{
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$this->_creationTime = $creationTime;
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}
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/**
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* Returns the most recent time the presentation was modified. The value is
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* in seconds since midnight, Jan. 1, 1904, in UTC time.
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*
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* @return integer
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*/
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public function getModificationTime()
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{
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return $this->_modificationTime;
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}
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/**
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* Sets the most recent time the presentation was modified in seconds since
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* midnight, Jan. 1, 1904, in UTC time.
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*
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* @param integer $modificationTime The most recent time the presentation
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* was modified.
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*/
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public function setModificationTime($modificationTime)
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{
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$this->_modificationTime = $modificationTime;
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}
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/**
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* Returns the time-scale for the entire presentation. This is the number of
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* time units that pass in one second. For example, a time coordinate system
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* that measures time in sixtieths of a second has a time scale of 60.
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*
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* @return integer
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*/
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public function getTimescale()
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{
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return $this->_timescale;
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}
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/**
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* Sets the time-scale for the entire presentation. This is the number of
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* time units that pass in one second. For example, a time coordinate system
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* that measures time in sixtieths of a second has a time scale of 60.
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*
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* @param integer $timescale The time-scale for the entire presentation.
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*/
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public function setTimescale($timescale)
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{
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$this->_timescale = $timescale;
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}
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/**
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* Returns the length of the presentation in the indicated timescale. This
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* property is derived from the presentation's tracks: the value of this
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* field corresponds to the duration of the longest track in the
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* presentation.
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*
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* @return integer
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*/
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public function getDuration()
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{
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return $this->_duration;
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}
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/**
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* Sets the length of the presentation in the indicated timescale. This
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* property must be derived from the presentation's tracks: the value of
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* this field must correspond to the duration of the longest track in the
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* presentation.
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*
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* @param integer $duration The length of the presentation.
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*/
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public function setDuration($duration)
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{
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$this->_duration = $duration;
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}
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/**
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* Returns the preferred rate to play the presentation. 1.0 is normal
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* forward playback.
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*
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* @return integer
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*/
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public function getRate()
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{
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return $this->_rate;
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}
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/**
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* Sets the preferred rate to play the presentation. 1.0 is normal
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* forward playback.
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*
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* @param integer $rate The preferred play rate.
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*/
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public function setRate($rate)
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{
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$this->_rate = $rate;
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}
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/**
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* Returns the preferred playback volume. 1.0 is full volume.
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*
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* @return integer
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*/
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public function getVolume()
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{
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return $this->_volume;
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}
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/**
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* Sets the preferred playback volume. 1.0 is full volume.
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*
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* @param integer $volume The playback volume.
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*/
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public function setVolume($volume)
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{
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$this->_volume = $volume;
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}
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/**
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* Returns the transformation matrix for the video; (u,v,w) are restricted
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* here to (0,0,1), hex values (0,0,0x40000000).
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*
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* @return Array
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*/
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public function getMatrix()
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{
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return $this->_matrix;
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}
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/**
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* Sets the transformation matrix for the video; (u,v,w) are restricted
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* here to (0,0,1), hex values (0,0,0x40000000).
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*
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* @param Array $matrix The transformation matrix array of 9 values
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*/
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public function setMatrix($matrix)
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{
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$this->_matrix = $matrix;
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}
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/**
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* Returns a value to use for the track ID of the next track to be added to
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* this presentation. Zero is not a valid track ID value. The value is
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* larger than the largest track-ID in use. If this value is equal to or
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* larger than 32-bit maxint, and a new media track is to be added, then a
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* search must be made in the file for a unused track identifier.
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*
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* @return integer
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*/
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public function getNextTrackId()
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{
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return $this->_nextTrackId;
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}
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/**
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* Sets a value to use for the track ID of the next track to be added to
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* this presentation. Zero is not a valid track ID value. The value must be
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* larger than the largest track-ID in use.
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*
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* @param integer $nextTrackId The next track ID.
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*/
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public function setNextTrackId($nextTrackId)
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{
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$this->_nextTrackId = $nextTrackId;
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}
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/**
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* Returns the box heap size in bytes.
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*
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* @return integer
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*/
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public function getHeapSize()
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{
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return parent::getHeapSize() +
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($this->getVersion() == 1 ? 28 : 16) + 80;
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}
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/**
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* Writes the box data.
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*
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* @param Zend_Io_Writer $writer The writer object.
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* @return void
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*/
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protected function _writeData($writer)
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{
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parent::_writeData($writer);
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if ($this->getVersion() == 1) {
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$writer->writeInt64BE($this->_creationTime)
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->writeInt64BE($this->_modificationTime)
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->writeUInt32BE($this->_timescale)
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->writeInt64BE($this->_duration);
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} else {
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$writer->writeUInt32BE($this->_creationTime)
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->writeUInt32BE($this->_modificationTime)
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->writeUInt32BE($this->_timescale)
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->writeUInt32BE($this->_duration);
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}
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@list(, $rateDecimals) = explode('.', (float)$this->_rate);
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@list(, $volumeDecimals) = explode('.', (float)$this->_volume);
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$writer->writeUInt32BE(floor($this->_rate) << 16 | $rateDecimals)
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->writeUInt16BE(floor($this->_volume) << 8 | $volumeDecimals)
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->write(str_pad('', 10, "\0"));
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for ($i = 0; $i < 9; $i++) {
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$writer->writeUInt32BE($this->_matrix[$i]);
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}
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$writer->write(str_pad('', 24, "\0"))
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->writeUInt32BE($this->_nextTrackId);
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}
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}
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