diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFHD.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFHD.php | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFHD.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFHD.php new file mode 100644 index 0000000..53faac1 --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ISO14496/Box/TFHD.php @@ -0,0 +1,190 @@ +<?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: TFHD.php 92 2008-05-10 13:43:14Z svollbehr $ + */ + +/**#@+ @ignore */ +require_once("ISO14496/Box/Full.php"); +/**#@-*/ + +/** + * Each movie fragment can add zero or more <i>Track Fragment Header Box</i> to + * each track; and a track fragment can add zero or more contiguous runs of + * samples. The track fragment header sets up information and defaults used for + * those runs of samples. + * + * @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_TFHD extends ISO14496_Box_Full +{ + /** @var integer */ + private $_trackId; + + /** @var integer */ + private $_defaultSampleDescriptionIndex; + + /** @var integer */ + private $_defaultSampleDuration; + + /** @var integer */ + private $_defaultSampleSize; + + /** @var integer */ + private $_defaultSampleFlags; + + /** + * Indicates indicates the presence of the baseDataOffset field. This provides + * an explicit anchor for the data offsets in each track run (see below). If + * not provided, the base-dataoffset for the first track in the movie fragment + * is the position of the first byte of the enclosing Movie Fragment Box, and + * for second and subsequent track fragments, the default is the end of the + * data defined by the preceding fragment. Fragments inheriting their offset + * in this way must all use the same data-reference (i.e., the data for these + * tracks must be in the same file). + */ + const BASE_DATA_OFFSET = 0x1; + + /** + * Indicates the presence of the sampleDescriptionIndex field, which + * over-rides, in this fragment, the default set up in the + * {@link ISO14496_Box_TREX Track Extends Box}. + */ + const SAMPLE_DESCRIPTION_INDEX = 0x2; + + /** Indicates the precense of the defaultSampleDuration field. */ + const DEFAULT_SAMPLE_DURATION = 0x8; + + /** Indicates the precense of the defaultSampleSize field. */ + const DEFAULT_SAMPLE_SIZE = 0x10; + + /** Indicates the precense of the defaultSampleFlags field. */ + const DEFAULT_SAMPLE_DURATION = 0x20; + + /** + * Indicates that the duration provided in either defaultSampleDuration, or by + * the defaultDuration in the {@link ISO14496_Box_TREX Track Extends Box}, is + * empty, i.e. that there are no samples for this time interval. + */ + const DURATION_IS_EMPTY = 0x10000; + + /** + * Constructs the class with given parameters and reads box related data from + * the ISO Base Media file. + * + * @param Reader $reader The reader object. + * @todo The sample flags could be parsed further + */ + public function __construct($reader, &$options = array()) + { + parent::__construct($reader, $options); + + $this->_trackId = $this->_reader->readUInt32BE(); + if ($this->hasFlag(self::BASE_DATA_OFFSET)) + $this->_baseDataOffset = $this->_reader->readInt64BE(); + if ($this->hasFlag(self::SAMPLE_DESCRIPTION_INDEX)) + $this->_sampleDescriptionIndex = $this->_reader->readUInt32BE(); + if ($this->hasFlag(self::DEFAULT_SAMPLE_DURATION)) + $this->_defaultSampleDuration = $this->_reader->readUInt32BE(); + if ($this->hasFlag(self::DEFAULT_SAMPLE_SIZE)) + $this->_defaultSampleSize = $this->_reader->readUInt32BE(); + if ($this->hasFlag(self::DEFAULT_SAMPLE_FLAGS)) + $this->_defaultSampleFlags = $this->_reader->readUInt32BE(); + } + + /** + * Returns the track identifier. + * + * @return integer + */ + public function getTrackId() + { + return $this->_trackId; + } + + /** + * Returns the base offset to use when calculating data offsets. + * + * @return integer + */ + public function getBaseDataOffset() + { + return $this->_baseDataOffset; + } + + /** + * Returns the sample description index. + * + * @return integer + */ + public function getSampleDescriptionIndex() + { + return $this->_defaultSampleDescriptionIndex; + } + + /** + * Returns the default sample duration. + * + * @return integer + */ + public function getDefaultSampleDuration() + { + return $this->_defaultSampleDuration; + } + + /** + * Returns the default sample size. + * + * @return integer + */ + public function getDefaultSampleSize() + { + return $this->_defaultSampleSize; + } + + /** + * Returns the default sample flags. + * + * @return integer + */ + public function getDefaultSampleFlags() + { + return $this->_defaultSampleFlags; + } +} |