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Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MVHD.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MVHD.php | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MVHD.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MVHD.php new file mode 100644 index 0000000..5436c34 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/MVHD.php @@ -0,0 +1,166 @@ +<?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: MVHD.php 92 2008-05-10 13:43:14Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ISO14496/Box/Full.php"); +/**#@-*/ + +/** + * The <i>Movie Header Box</i> defines overall information which is + * media-independent, and relevant to the entire presentation considered as a + * whole. + * + * @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_MVHD extends ISO14496_Box_Full +{ + /** @var integer */ + private $_creationTime; + + /** @var integer */ + private $_modificationTime; + + /** @var integer */ + private $_timescale; + + /** @var integer */ + private $_duration; + + /** @var integer */ + private $_rate; + + /** @var integer */ + private $_volume; + + /** @var integer */ + private $_nextTrackId; + + /** + * 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(); + } + $this->_rate = + ((($tmp = $this->_reader->readUInt32BE()) >> 16) & 0xffff) + + ($tmp & 0xffff) / 10; + $this->_volume = ((($tmp = $this->_reader->readUInt16BE()) >> 8) & 0xff) + + ($tmp & 0xff) / 10; + $this->_reader->skip(70); + $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; } + + /** + * 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; } + + /** + * 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; } + + /** + * 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; } + + /** + * Returns the preferred rate to play the presentation. 1.0 is normal forward + * playback. + * + * @return integer + */ + public function getRate() { return $this->_rate; } + + /** + * Returns the preferred playback volume. 1.0 is full volume. + * + * @return integer + */ + public function getVolume() { return $this->_volume; } + + /** + * 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; } +} |