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Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TKHD.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TKHD.php | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TKHD.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TKHD.php new file mode 100644 index 0000000..e01013c --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TKHD.php @@ -0,0 +1,177 @@ +<?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: TKHD.php 92 2008-05-10 13:43:14Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ISO14496/Box/Full.php"); +/**#@-*/ + +/** + * The <i>Track Header Box</i> specifies the characteristics of a single track. + * Exactly one Track Header Box is contained in a track. + * + * In the absence of an edit list, the presentation of a track starts at the + * beginning of the overall presentation. An empty edit is used to offset the + * start time of 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_TKHD extends ISO14496_Box_Full +{ + /** @var integer */ + private $_creationTime; + + /** @var integer */ + private $_modificationTime; + + /** @var integer */ + private $_trackId; + + /** @var integer */ + private $_duration; + + /** @var integer */ + private $_width; + + /** @var integer */ + private $_height; + + /** + * Indicates that the track is enabled. A disabled track is treated as if it + * were not present. + */ + const TRACK_ENABLED = 1; + + /** Indicates that the track is used in the presentation. */ + const TRACK_IN_MOVIE = 2; + + /** Indicates that the track is used when previewing the presentation. */ + const TRACK_IN_PREVIEW = 4; + + /** + * 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->_trackId = $this->_reader->readUInt32BE(); + $this->_reader->skip(4); + $this->_duration = $this->_reader->readInt64BE(); + } else { + $this->_creationTime = $this->_reader->readUInt32BE(); + $this->_modificationTime = $this->_reader->readUInt32BE(); + $this->_trackId = $this->_reader->readUInt32BE(); + $this->_reader->skip(4); + $this->_duration = $this->_reader->readUInt32BE(); + } + $this->_reader->skip(52); + $this->_width = + ((($tmp = $this->_reader->readUInt32BE()) >> 16) & 0xffff) + + ($tmp & 0xffff) / 10; + $this->_height = + ((($tmp = $this->_reader->readUInt32BE()) >> 16) & 0xffff) + + ($tmp & 0xffff) / 10; + } + + /** + * Returns the creation time of 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 track was modified in seconds since + * midnight, Jan. 1, 1904, in UTC time. + * + * @return integer + */ + public function getModificationTime() { return $this->_modificationTime; } + + /** + * Returns a number that uniquely identifies this track over the entire + * life-time of this presentation. Track IDs are never re-used and cannot be + * zero. + * + * @return integer + */ + public function getTrackId() { return $this->_trackId; } + + /** + * Returns the duration of this track (in the timescale indicated in the + * {@link MVHD Movie Header Box}). The value of this field is equal to the sum + * of the durations of all of the track's edits. If there is no edit list, + * then the duration is the sum of the sample durations, converted into the + * timescale in the {@link MVHD Movie Header Box}. If the duration of this + * track cannot be determined then duration is set to all 32-bit maxint. + * + * @return integer + */ + public function getDuration() { return $this->_duration; } + + /** + * Returns the track's visual presentation width. This needs not be the same + * as the pixel width of the images; all images in the sequence are scaled to + * this width, before any overall transformation of the track represented by + * the matrix. The pixel width of the images is the default value. + * + * @return integer + */ + public function getWidth() { return $this->_rate; } + + /** + * Returns the track's visual presentation height. This needs not be the same + * as the pixel height of the images; all images in the sequence are scaled to + * this height, before any overall transformation of the track represented by + * the matrix. The pixel height of the images is the default value. + * + * @return integer + */ + public function getHeight() { return $this->_volume; } +} |