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Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/STSH.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/STSH.php | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/STSH.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/STSH.php deleted file mode 100644 index 8dd6a6d..0000000 --- a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/STSH.php +++ /dev/null @@ -1,117 +0,0 @@ -<?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: STSH.php 92 2008-05-10 13:43:14Z svollbehr $ - */ - -/**#@+ @ignore */ -require_once("ISO14496/Box/Full.php"); -/**#@-*/ - -/** - * The <i>Shadow Sync Sample Box</i> table provides an optional set of sync - * samples that can be used when seeking or for similar purposes. In normal - * forward play they are ignored. - * - * Each entry in the Shadow Sync Table consists of a pair of sample numbers. The - * first entry (shadowedSampleNumber) indicates the number of the sample that a - * shadow sync will be defined for. This should always be a non-sync sample - * (e.g. a frame difference). The second sample number (syncSampleNumber) - * indicates the sample number of the sync sample (i.e. key frame) that can be - * used when there is a random access at, or before, the shadowedSampleNumber. - * - * The shadow sync samples are normally placed in an area of the track that is - * not presented during normal play (edited out by means of an edit list), - * though this is not a requirement. The shadow sync table can be ignored and - * the track will play (and seek) correctly if it is ignored (though perhaps not - * optimally). - * - * The Shadow Sync Sample replaces, not augments, the sample that it shadows - * (i.e. the next sample sent is shadowedSampleNumber+1). The shadow sync sample - * is treated as if it occurred at the time of the sample it shadows, having the - * duration of the sample it shadows. - * - * Hinting and transmission might become more complex if a shadow sample is used - * also as part of normal playback, or is used more than once as a shadow. In - * this case the hint track might need separate shadow syncs, all of which can - * get their media data from the one shadow sync in the media track, to allow - * for the different time-stamps etc. needed in their headers. - * - * @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_STSH extends ISO14496_Box_Full -{ - /** @var Array */ - private $_shadowSyncSampleTable = 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(); - $data = $this->_reader->read - ($this->getOffset() + $this->getSize() - $this->_reader->getOffset()); - for ($i = 0; $i < $entryCount; $i++) - $this->_shadowSyncSampleTable[$i] = array - ("shadowedSampleNumber" => - Transform::fromUInt32BE(substr($data, ($i - 1) * 8, 4)), - "syncSampleNumber" => - Transform::fromUInt32BE(substr($data, $i * 8 - 4, 4))); - } - - /** - * Returns an array of values. Each entry is an array containing the following - * keys. - * o shadowedSampleNumber - gives the number of a sample for which there is - * an alternative sync sample. - * o syncSampleNumber - gives the number of the alternative sync sample. - * - * @return Array - */ - public function getShadowSyncSampleTable() - { - return $this->_shadowSyncSampleTable; - } -} |