diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TRUN.php')
-rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TRUN.php | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TRUN.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TRUN.php new file mode 100644 index 0000000..d6a51d2 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TRUN.php @@ -0,0 +1,149 @@ +<?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: TRUN.php 92 2008-05-10 13:43:14Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ISO14496/Box/Full.php"); +/**#@-*/ + +/** + * Within the {@link ISO14496_Box_TRAF Track Fragment Box}, there are zero or + * more <i>Track Fragment Run Boxes</i>. If the durationIsEmpty flag is set, + * there are no track runs. + * + * @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_TRUN extends ISO14496_Box_Full +{ + /** @var integer */ + private $_dataOffset; + + /** @var Array */ + private $_samples = array(); + + /** Indicates the precense of the dataOffset field. */ + const DATA_OFFSET = 0x1; + + /** + * Indicates the precense of the firstSampleFlags field; this over-rides the + * default flags for the first sample only. This makes it possible to record + * a group of frames where the first is a key and the rest are difference + * frames, without supplying explicit flags for every sample. If this flag and + * field are used, sampleFlags field shall not be present. + */ + const FIRST_SAMPLE_FLAGS = 0x4; + + /** + * Indicates that each sample has its own duration, otherwise the default is + * used. + */ + const SAMPLE_DURATION = 0x100; + + /** + * Indicates that each sample has its own size, otherwise the default is used. + */ + const SAMPLE_SIZE = 0x200; + + /** + * Indicates that each sample has its own flags, otherwise the default is + * used. + */ + const SAMPLE_FLAGS = 0x400; + + /** + * Indicates that each sample has a composition time offset (e.g. as used for + * I/P/B video in MPEG). + */ + const SAMPLE_COMPOSITION_TIME_OFFSETS = 0x800; + + /** + * 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); + + $flags = $this->_flags; + $sampleCount = $this->_reader->readUInt32BE(); + + if ($this->hasFlag(self::DATA_OFFSET)) + $this->_dataOffset = $this->_reader->readInt32BE(); + if ($this->hasFlag(self::FIRST_SAMPLE_FLAGS)) + $this->_flags = $this->_reader->readUInt32BE(); + + for ($i = 0; $i < $sampleCount; $i++) { + $sample = array(); + if ($this->hasFlag(self::SAMPLE_DURATION)) + $sample["duration"] = $this->_reader->readUInt32BE(); + if ($this->hasFlag(self::SAMPLE_SIZE)) + $sample["size"] = $this->_reader->readUInt32BE(); + if ($this->hasFlag(self::SAMPLE_FLAGS)) + $sample["flags"] = $this->_reader->readUInt32BE(); + if ($this->hasFlag(self::SAMPLE_COMPOSITION_TIME_OFFSET)) + $sample["compositionTimeOffset"] = $this->_reader->readUInt32BE(); + $this->_samples[] = $sample; + $this->_flags = $flags; + } + } + + /** + * Returns the data offset. + * + * @return integer + */ + public function getDataOffset() + { + return $this->_trackId; + } + + /** + * Returns the array of samples. + * + * @return Array + */ + public function getSamples() + { + return $this->_samples; + } +} |