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<?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: ILST.php 101 2008-05-13 20:28:13Z svollbehr $
*/
/**#@+ @ignore */
require_once("ISO14496/Box.php");
/**#@-*/
/**
* A container box for all the iTunes/iPod specific boxes. A list of well known
* boxes is provided in the following table. The value for each box is contained
* in a nested {@link ISO14496_Box_DATA Data Box}.
*
* <ul>
* <li><b>_nam</b> -- <i>Name of the track</i></li>
* <li><b>_ART</b> -- <i>Name of the artist</i></li>
* <li><b>aART</b> -- <i>Name of the album artist</i></li>
* <li><b>_alb</b> -- <i>Name of the album</i></li>
* <li><b>_grp</b> -- <i>Grouping</i></li>
* <li><b>_day</b> -- <i>Year of publication</i></li>
* <li><b>trkn</b> -- <i>Track number (number/total)</i></li>
* <li><b>disk</b> -- <i>Disk number (number/total)</i></li>
* <li><b>tmpo</b> -- <i>BPM tempo</i></li>
* <li><b>_wrt</b> -- <i>Name of the composer</i></li>
* <li><b>_cmt</b> -- <i>Comments</i></li>
* <li><b>_gen</b> -- <i>Genre as string</i></li>
* <li><b>gnre</b> -- <i>Genre as an ID3v1 code, added by one</i></li>
* <li><b>cpil</b> -- <i>Part of a compilation (0/1)</i></li>
* <li><b>tvsh</b> -- <i>Name of the (television) show</i></li>
* <li><b>sonm</b> -- <i>Sort name of the track</i></li>
* <li><b>soar</b> -- <i>Sort name of the artist</i></li>
* <li><b>soaa</b> -- <i>Sort name of the album artist</i></li>
* <li><b>soal</b> -- <i>Sort name of the album</i></li>
* <li><b>soco</b> -- <i>Sort name of the composer</i></li>
* <li><b>sosn</b> -- <i>Sort name of the show</i></li>
* <li><b>_lyr</b> -- <i>Lyrics</i></li>
* <li><b>covr</b> -- <i>Cover (or other) artwork binary data</i></li>
* <li><b>_too</b> -- <i>Information about the software</i></li>
* </ul>
*
* @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: 101 $
* @since iTunes/iPod specific
*/
final class ISO14496_Box_ILST extends ISO14496_Box
{
/**
* 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 = null, &$options = array())
{
parent::__construct($reader, $options);
$this->setContainer(true);
if ($reader === null)
return;
$this->constructBoxes("ISO14496_Box_ILST_Container");
}
/**
* Override magic function so that $obj->value on a box will return the data
* box instead of the data container box.
*
* @param string $name The box or field name.
* @return mixed
*/
public function __get($name)
{
if (strlen($name) == 3)
$name = "\xa9" . $name;
if ($name[0] == "_")
$name = "\xa9" . substr($name, 1, 3);
if ($this->hasBox($name)) {
$boxes = $this->getBoxesByIdentifier($name);
return $boxes[0]->data;
}
if (method_exists($this, "get" . ucfirst($name)))
return call_user_func(array($this, "get" . ucfirst($name)));
return $this->addBox(new ISO14496_Box_ILST_Container($name))->data;
}
}
/**
* Generic iTunes/iPod DATA Box container.
*
* @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: 101 $
* @since iTunes/iPod specific
* @ignore
*/
final class ISO14496_Box_ILST_Container extends ISO14496_Box
{
public function __construct($reader = null, &$options = array())
{
parent::__construct(is_string($reader) ? null : $reader, $options);
$this->setContainer(true);
if (is_string($reader)) {
$this->setType($reader);
$this->addBox(new ISO14496_Box_DATA());
} else
$this->constructBoxes();
}
}
/**#@+ @ignore */
require_once("ISO14496/Box/Full.php");
/**#@-*/
/**
* A box that contains data for iTunes/iPod specific boxes.
*
* @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: 101 $
* @since iTunes/iPod specific
*/
final class ISO14496_Box_DATA extends ISO14496_Box_Full
{
/** @var mixed */
private $_value;
/** A flag to indicate that the data is an unsigned 8-bit integer. */
const INTEGER = 0x0;
/**
* A flag to indicate that the data is an unsigned 8-bit integer. Different
* value used in old versions of iTunes.
*/
const INTEGER_OLD_STYLE = 0x15;
/** A flag to indicate that the data is a string. */
const STRING = 0x1;
/** A flag to indicate that the data is the contents of an JPEG image. */
const JPEG = 0xd;
/** A flag to indicate that the data is the contents of a PNG image. */
const PNG = 0xe;
/**
* 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 = null, &$options = array())
{
parent::__construct($reader, $options);
if ($reader === null)
return;
$this->_reader->skip(4);
$data = $this->_reader->read
($this->getOffset() + $this->getSize() - $this->_reader->getOffset());
switch ($this->getFlags()) {
case self::INTEGER:
case self::INTEGER_OLD_STYLE:
for ($i = 0; $i < strlen($data); $i++)
$this->_value .= Transform::fromInt8($data[$i]);
break;
case self::STRING:
default:
$this->_value = $data;
}
}
/**
* Returns the value this box contains.
*
* @return mixed
*/
public function getValue() { return $this->_value; }
/**
* Sets the value this box contains.
*
* @return mixed
*/
public function setValue($value, $type = false)
{
$this->_value = (string)$value;
if ($type === false && is_string($value))
$this->_flags = self::STRING;
if ($type === false && is_int($value))
$this->_flags = self::INTEGER;
if ($type !== false)
$this->_flags = $type;
}
/**
* Override magic function so that $obj->data will return the current box
* instead of an error. For other values the method will attempt to call a
* getter method.
*
* If there are no getter methods with given name, the method will yield an
* exception.
*
* @param string $name The box or field name.
* @return mixed
*/
public function __get($name)
{
if ($name == "data")
return $this;
if (method_exists($this, "get" . ucfirst($name)))
return call_user_func(array($this, "get" . ucfirst($name)));
throw new ISO14496_Exception("Unknown box/field: " . $name);
}
/**
* Returns the box raw data.
*
* @return string
*/
public function __toString($data = "")
{
switch ($this->getFlags()) {
case self::INTEGER:
case self::INTEGER_OLD_STYLE:
$data = "";
for ($i = 0; $i < strlen($this->_value); $i++)
$data .= Transform::toInt8($this->_value[$i]);
break;
case self::STRING:
default:
$data = $this->_value;
}
return parent::__toString("\0\0\0\0" . $data);
}
}
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