diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MDHD.php')
-rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MDHD.php | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MDHD.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MDHD.php new file mode 100644 index 0000000..c52cca3 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MDHD.php @@ -0,0 +1,136 @@ +<?php +/** + * PHP Reader Library + * + * Copyright (c) 2008 The PHP Reader Project Workgroup. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * - Neither the name of the project workgroup nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 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. + * + * @package php-reader + * @subpackage ISO 14496 + * @copyright Copyright (c) 2008 The PHP Reader Project Workgroup + * @license http://code.google.com/p/php-reader/wiki/License New BSD License + * @version $Id: MDHD.php 92 2008-05-10 13:43:14Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ISO14496/Box/Full.php"); +/**#@-*/ + +/** + * The <i>Media Header Box</i> declares overall information that is + * media-independent, and relevant to characteristics of the media in a track. + * + * @package php-reader + * @subpackage ISO 14496 + * @author Sven Vollbehr <svollbehr@gmail.com> + * @copyright Copyright (c) 2008 The PHP Reader Project Workgroup + * @license http://code.google.com/p/php-reader/wiki/License New BSD License + * @version $Rev: 92 $ + */ +final class ISO14496_Box_MDHD extends ISO14496_Box_Full +{ + /** @var integer */ + private $_creationTime; + + /** @var integer */ + private $_modificationTime; + + /** @var integer */ + private $_timescale; + + /** @var integer */ + private $_duration; + + /** @var string */ + private $_language; + + /** + * Constructs the class with given parameters and reads box related data from + * the ISO Base Media file. + * + * @param Reader $reader The reader object. + */ + public function __construct($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(); + } + $this->_language = + chr(((($tmp = $this->_reader->readUInt16BE()) >> 10) & 0x1f) + 0x60) . + chr((($tmp >> 5) & 0x1f) + 0x60) . chr(($tmp & 0x1f) + 0x60); + } + + /** + * Returns the creation time of the media in this track, in seconds since + * midnight, Jan. 1, 1904, in UTC time. + * + * @return integer + */ + public function getCreationTime() { return $this->_creationTime; } + + /** + * Returns the most recent time the media in this track was modified in + * seconds since midnight, Jan. 1, 1904, in UTC time. + * + * @return integer + */ + public function getModificationTime() { return $this->_modificationTime; } + + /** + * Returns the time-scale for this media. 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; } + + /** + * Returns the duration of this media (in the scale of the timescale). + * + * @return integer + */ + public function getDuration() { return $this->_duration; } + + /** + * Returns the three byte language code to describe the language of this + * media, according to {@link http://www.loc.gov/standards/iso639-2/ + * ISO 639-2/T}. + * + * @return string + */ + public function getLanguage() { return $this->_language; } +} |