Add support for ISO base media file format
git-svn-id: http://php-reader.googlecode.com/svn/trunk@85 51a70ab9-7547-0410-9469-37e369ee0574
This commit is contained in:
svollbehr
190
src/ISO14496/Box/TFHD.php
Normal file
190
src/ISO14496/Box/TFHD.php
Normal file
@@ -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 $Id$
|
||||
*/
|
||||
|
||||
/**#@+ @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 $Rev$
|
||||
*/
|
||||
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)
|
||||
{
|
||||
parent::__construct($reader);
|
||||
|
||||
$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;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user