diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFRA.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFRA.php | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFRA.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFRA.php new file mode 100644 index 0000000..5e73844 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFRA.php @@ -0,0 +1,142 @@ +<?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: TFRA.php 92 2008-05-10 13:43:14Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ISO14496/Box/Full.php"); +/**#@-*/ + +/** + * Each entry contains the location and the presentation time of the random + * accessible sample. It indicates that the sample in the entry can be random + * accessed. Note that not every random accessible sample in the track needs to + * be listed in the table. + * + * The absence of the <i>Track Fragment Random Access Box</i> does not mean that + * all the samples are sync samples. Random access information in the + * {@link ISO14496_Box_TRUN Track Fragment Run Box}, + * {@link ISO14496_Box_TRAF Track Fragment Box} and + * {@link ISO14496_Box_TREX Track Fragment Box} shall be set appropriately + * regardless of the presence of this box. + * + * @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_TFRA extends ISO14496_Box_Full +{ + /** @var integer */ + private $_trackId; + + /** @var Array */ + private $_degradationPriorityTable = 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); + + $this->_trackId = $this->_reader->readUInt32BE(); + + $trafNumberSize = (($tmp = $this->_reader->readUInt32BE()) >> 4) & 0x3; + $trunNumberSize = ($tmp >> 2) & 0x3; + $sampleNumberSize = $tmp & 0x3; + $entryCount = $this->_reader->readUInt32BE(); + for ($i = 1; $i <= $entryCount; $i++) { + $entry = array(); + if ($this->getVersion() == 1) { + $entry["time"] = $this->_reader->readInt64BE(); + $entry["moofOffset"] = $this->_reader->readInt64BE(); + } else { + $entry["time"] = $this->_reader->readUInt32BE(); + $entry["moofOffset"] = $this->_reader->readUInt32BE(); + } + $entry["trafNumber"] = + ($trafNumberSize == 4 ? $this->_reader->readUInt32BE() : + ($trafNumberSize == 8 ? $this->_reader->readInt64BE() : 0)); + $entry["trunNumber"] = + ($trunNumberSize == 4 ? $this->_reader->readUInt32BE() : + ($trunNumberSize == 8 ? $this->_reader->readInt64BE() : 0)); + $entry["sampleNumber"] = + ($sampleNumberSize == 4 ? $this->_reader->readUInt32BE() : + ($sampleNumberSize == 8 ? $this->_reader->readInt64BE() : 0)); + $this->_degradationPriorityTable[$i] = $entry; + } + } + + /** + * Returns the track identifier. + * + * @return integer + */ + public function getTrackId() { return $this->_trackId; } + + /** + * Returns an array of entries. Each entry is an array containing the + * following keys. + * o time -- a 32 or 64 bits integer that indicates the presentation time of + * the random access sample in units defined in the + * {@link ISO14496_Box_MDHD Media Header Box} of the associated track. + * o moofOffset -- a 32 or 64 bits integer that gives the offset of the + * {@link ISO14496_Box_MOOF Movie Fragment Box} used in this entry. Offset + * is the byte-offset between the beginning of the file and the beginning + * of the Movie Fragment Box. + * o trafNumber -- indicates the {@link ISO14496_Box_TRAF Track Fragment + * Box} number that contains the random accessible sample. The number + * ranges from 1 (the first traf is numbered 1) in each Track Fragment + * Box. + * o trunNumber -- indicates the {@link ISO14496_Box_TRUN Track Fragment Run + * Box} number that contains the random accessible sample. The number + * ranges from 1 in each Track Fragment Run Box. + * o sampleNumber -- indicates the sample number that contains the random + * accessible sample. The number ranges from 1 in each Track Fragment Run + * Box. + * + * @return Array + */ + public function getDegradationPriorityTable() + { + return $this->_degradationPriorityTable; + } +} |