diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/ELST.php')
-rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/ELST.php | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/ELST.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/ELST.php new file mode 100644 index 0000000..56ae8da --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/ELST.php @@ -0,0 +1,108 @@ +<?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: ELST.php 92 2008-05-10 13:43:14Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ISO14496/Box/Full.php"); +/**#@-*/ + +/** + * The <i>Edit List Box</i> contains an explicit timeline map. Each entry + * defines part of the track time-line: by mapping part of the media time-line, + * or by indicating empty time, or by defining a dwell, where a single + * time-point in the media is held for a period. + * + * @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_ELST extends ISO14496_Box_Full +{ + /** @var Array */ + private $_entries = array(); + + /** + * 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); + + $entryCount = $this->_reader->readUInt32BE(); + for ($i = 1; $i <= $entryCount; $i++) { + $entry = array(); + if ($this->getVersion() == 1) { + $entry["segmentDuration"] = $this->_reader->readInt64BE(); + $entry["mediaTime"] = $this->_reader->readInt64BE(); + } else { + $entry["segmentDuration"] = $this->_reader->readUInt32BE(); + $entry["mediaTime"] = $this->_reader->readInt32BE(); + } + $entry["mediaRate"] = $this->_reader->readInt16BE() + + $this->_reader->readInt16BE() / 10; + $this->_entries[] = $entry; + } + } + + /** + * Returns an array of entries. Each entry is an array containing the + * following keys. + * o segmentDuration: specifies the duration of this edit segment in units + * of the timescale in the {@link ISO14496_Box_MVHD Movie Header Box}. + * o mediaTime: the starting time within the media of this edit segment (in + * media time scale units, in composition time). If this field is set to + * –1, it is an empty edit. The last edit in a track shall never be an + * empty edit. Any difference between the duration in the + * {@link ISO14496_Box_MVHD Movie Header Box}, and the track's duration is + * expressed as an implicit empty edit at the end. + * o mediaRate: the relative rate at which to play the media corresponding + * to this edit segment. If this value is 0, then the edit is specifying + * a dwell: the media at media-time is presented for the segment-duration. + * Otherwise this field shall contain the value 1. + * + * @return Array + */ + public function getEntries() + { + return $this->_entries; + } +} |