42d91f7e33
git-svn-id: http://php-reader.googlecode.com/svn/trunk@85 51a70ab9-7547-0410-9469-37e369ee0574
100 lines
3.9 KiB
PHP
100 lines
3.9 KiB
PHP
<?php
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/**
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* PHP Reader Library
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*
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* Copyright (c) 2008 The PHP Reader Project Workgroup. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the project workgroup nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package php-reader
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* @subpackage ISO 14496
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* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
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* @license http://code.google.com/p/php-reader/wiki/License New BSD License
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* @version $Id$
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*/
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/**#@+ @ignore */
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require_once("ISO14496/Box/Full.php");
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/**#@-*/
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/**
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* The <i>Chunk Offset Box</i> table gives the index of each chunk into the
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* containing file. There are two variants, permitting the use of 32-bit or
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* 64-bit offsets. The latter is useful when managing very large presentations.
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* At most one of these variants will occur in any single instance of a sample
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* table.
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*
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* Offsets are file offsets, not the offset into any box within the file (e.g.
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* {@link ISO14496_Box_MDAT Media Data Box}). This permits referring to media
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* data in files without any box structure. It does also mean that care must be
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* taken when constructing a self-contained ISO file with its metadata
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* ({@link ISO14496_Box_MOOV Movie Box}) at the front, as the size of the
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* {@link ISO14496_Box_MOOV Movie Box} will affect the chunk offsets to the
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* media data.
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*
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* This box variant contains 32-bit offsets.
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*
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* @package php-reader
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* @subpackage ISO 14496
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* @author Sven Vollbehr <svollbehr@gmail.com>
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* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
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* @license http://code.google.com/p/php-reader/wiki/License New BSD License
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* @version $Rev$
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*/
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final class ISO14496_Box_STCO extends ISO14496_Box_Full
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{
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/** @var Array */
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private $_chunkOffsetTable = array();
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/**
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* Constructs the class with given parameters and reads box related data from
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* the ISO Base Media file.
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*
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* @param Reader $reader The reader object.
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*/
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public function __construct($reader)
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{
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parent::__construct($reader);
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$entryCount = $this->_reader->readUInt32BE();
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for ($i = 0; $i < $entryCount; $i++)
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$this->_chunkOffsetTable[] = array
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("chunkOffset" => $this->_reader->readUInt32BE());
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}
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/**
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* Returns an array of values. Each entry is an array containing the following
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* keys.
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* o chunkOffset -- a 32 bit integer that gives the offset of the start of a
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* chunk into its containing media file.
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*
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* @return Array
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*/
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public function getChunkOffsetTable()
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{
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return $this->_chunkOffsetTable;
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}
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}
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