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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 ID3
* @copyright Copyright (c) 2008 The PHP Reader Project Workgroup
* @license http://code.google.com/p/php-reader/wiki/License New BSD License
* @version $Id: TXXX.php 105 2008-07-30 14:56:47Z svollbehr $
*/
/**#@+ @ignore */
require_once("ID3/Frame/AbstractText.php");
/**#@-*/
/**
* This frame is intended for one-string text information concerning the audio
* file in a similar way to the other T-frames. The frame body consists of a
* description of the string, represented as a terminated string, followed by
* the actual string. There may be more than one TXXX frame in each tag, but
* only one with the same description.
*
* The description is the first value, and the its value the second in the text
* array.
*
* @package php-reader
* @subpackage ID3
* @author Sven Vollbehr <svollbehr@gmail.com>
* @author Ryan Butterfield <buttza@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: 105 $
*/
final class ID3_Frame_TXXX extends ID3_Frame_AbstractText
{
/** @var string */
private $_description;
/**
* Constructs the class with given parameters and parses object related data.
*
* @param Reader $reader The reader object.
* @param Array $options The options array.
*/
public function __construct($reader = null, &$options = array())
{
ID3_Frame::__construct($reader, $options);
if ($reader === null)
return;
$this->_encoding = Transform::fromUInt8($this->_data[0]);
$this->_data = substr($this->_data, 1);
switch ($this->_encoding) {
case self::UTF16:
list($this->_description, $this->_text) =
$this->explodeString16($this->_data, 2);
$this->_description = Transform::fromString16($this->_description);
$this->_text = array(Transform::fromString16($this->_text));
break;
case self::UTF16BE:
list($this->_description, $this->_text) =
$this->explodeString16($this->_data, 2);
$this->_description = Transform::fromString16BE($this->_description);
$this->_text = array(Transform::fromString16BE($this->_text));
break;
default:
list($this->_description, $this->_text) =
$this->explodeString8($this->_data, 2);
$this->_text = array($this->_text);
}
}
/**
* Returns the description text.
*
* @return string
*/
public function getDescription() { return $this->_description; }
/**
* Sets the description text using given encoding.
*
* @param string $description The content description text.
* @param integer $encoding The text encoding.
*/
public function setDescription($description, $encoding = false)
{
$this->_description = $description;
if ($encoding !== false)
$this->_encoding = $encoding;
}
/**
* Returns the frame raw data.
*
* @return string
*/
public function __toString()
{
$data = Transform::toUInt8($this->_encoding);
switch ($this->_encoding) {
case self::UTF16:
case self::UTF16LE:
$order = $this->_encoding == self::UTF16 ?
Transform::MACHINE_ENDIAN_ORDER : Transform::LITTLE_ENDIAN_ORDER;
$data .= Transform::toString16($this->_description, $order) . "\0\0" .
Transform::toString16($this->_text[0], $order);
break;
case self::UTF16BE:
$data .= Transform::toString16BE($this->_description) . "\0\0" .
Transform::toString16BE($this->_text[0]);
break;
default:
$data .= $this->_description . "\0" . $this->_text[0];
}
$this->setData($data);
return ID3_Frame::__toString();
}
}
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