776aacbe3a
git-svn-id: http://php-reader.googlecode.com/svn/branches/zend@176 51a70ab9-7547-0410-9469-37e369ee0574
244 lines
7.6 KiB
PHP
244 lines
7.6 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>Media Header Box</i> declares overall information that is
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* media-independent, and relevant to characteristics of the media in a track.
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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_Mdhd 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 string */
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private $_language = 'und';
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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->_language = chr
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(((($tmp = $this->_reader->readUInt16BE()) >> 10) & 0x1f) + 0x60) .
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chr((($tmp >> 5) & 0x1f) + 0x60) . chr(($tmp & 0x1f) + 0x60);
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}
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/**
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* Returns the creation time of the media in this track, in seconds since
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* 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 media in this track, in seconds since
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* midnight, 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 media in this track was modified in
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* 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 media in this track was modified in
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* seconds since midnight, Jan. 1, 1904, in UTC time.
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*
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* @param integer $modificationTime The modification time.
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*/
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public function setModificationTime($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 this media. This is the number of time units
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* that pass in one second. For example, a time coordinate system that
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* 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 this media. This is the number of time units
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* that pass in one second. For example, a time coordinate system that
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* measures time in sixtieths of a second has a time scale of 60.
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*
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* @param integer $timescale The time-scale.
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*/
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public function setTimescale($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 duration of this media (in the scale of the timescale).
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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 duration of this media (in the scale of the timescale).
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*
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* @param integer $duration The duration.
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*/
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public function setDuration($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 three byte language code to describe the language of this
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* media, according to {@link http://www.loc.gov/standards/iso639-2/
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* ISO 639-2/T}.
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*
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* @return string
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*/
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public function getLanguage()
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{
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return $this->_language;
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}
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/**
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* Sets the three byte language code to describe the language of this
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* media, according to {@link http://www.loc.gov/standards/iso639-2/
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* ISO 639-2/T}.
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*
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* @param string $language The language code.
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*/
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public function setLanguage($language)
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{
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$this->_language = $language;
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}
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/**
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* Returns the box heap size in bytes.
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*
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* @return integer
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*/
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public function getHeapSize()
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{
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return parent::getHeapSize() +
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($this->getVersion() == 1 ? 28 : 16) + 4;
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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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$writer->writeUInt16BE((ord($this->_language[0]) - 0x60) << 10 |
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(ord($this->_language[1])- 0x60) << 5 |
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(ord($this->_language[2])- 0x60))
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->write(str_pad('', 2, "\0"));
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}
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}
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