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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: APIC.php 105 2008-07-30 14:56:47Z svollbehr $
*/
/**#@+ @ignore */
require_once("ID3/Frame.php");
require_once("ID3/Encoding.php");
/**#@-*/
/**
* The <i>Attached picture</i> frame contains a picture directly related to the
* audio file. Image format is the MIME type and subtype for the image.
*
* There may be several pictures attached to one file, each in their individual
* APIC frame, but only one with the same content descriptor. There may only
* be one picture with the same picture type. There is the possibility to put
* only a link to the image file by using the MIME type "-->" and having a
* complete URL instead of picture data.
*
* The use of linked files should however be used sparingly since there is the
* risk of separation of files.
*
* @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_APIC extends ID3_Frame
implements ID3_Encoding
{
/**
* The list of image types.
*
* @var Array
*/
public static $types = array
("Other", "32x32 pixels file icon (PNG only)", "Other file icon",
"Cover (front)", "Cover (back)", "Leaflet page",
"Media (e.g. label side of CD)", "Lead artist/lead performer/soloist",
"Artist/performer", "Conductor", "Band/Orchestra", "Composer",
"Lyricist/text writer", "Recording Location", "During recording",
"During performance", "Movie/video screen capture",
"A bright coloured fish", "Illustration", "Band/artist logotype",
"Publisher/Studio logotype");
/** @var integer */
private $_encoding = ID3_Encoding::UTF8;
/** @var string */
private $_mimeType = "image/unknown";
/** @var integer */
private $_imageType = 0;
/** @var string */
private $_description;
/** @var string */
private $_imageData;
/** @var integer */
private $_imageSize = 0;
/**
* 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, &$options = array())
{
parent::__construct($reader, $options);
if ($reader === null)
return;
$this->_encoding = Transform::fromUInt8($this->_data[0]);
$this->_mimeType = substr
($this->_data, 1, ($pos = strpos($this->_data, "\0", 1)) - 1);
$this->_imageType = Transform::fromUInt8($this->_data[++$pos]);
$this->_data = substr($this->_data, $pos + 1);
switch ($this->_encoding) {
case self::UTF16:
list ($this->_description, $this->_imageData) =
$this->explodeString16($this->_data, 2);
$this->_description = Transform::fromString16($this->_description);
break;
case self::UTF16BE:
list ($this->_description, $this->_imageData) =
$this->explodeString16($this->_data, 2);
$this->_description = Transform::fromString16BE($this->_description);
break;
default:
list ($this->_description, $this->_imageData) =
$this->explodeString8($this->_data, 2);
}
$this->_imageSize = strlen($this->_imageData);
}
/**
* Returns the text encoding.
*
* @return integer
*/
public function getEncoding() { return $this->_encoding; }
/**
* Sets the text encoding.
*
* @see ID3_Encoding
* @param integer $encoding The text encoding.
*/
public function setEncoding($encoding) { $this->_encoding = $encoding; }
/**
* Returns the MIME type. The MIME type is always ISO-8859-1 encoded.
*
* @return string
*/
public function getMimeType() { return $this->_mimeType; }
/**
* Sets the MIME type. The MIME type is always ISO-8859-1 encoded.
*
* @param string $mimeType The MIME type.
*/
public function setMimeType($mimeType) { $this->_mimeType = $mimeType; }
/**
* Returns the image type.
*
* @return integer
*/
public function getImageType() { return $this->_imageType; }
/**
* Sets the image type code.
*
* @param integer $imageType The image type code.
*/
public function setImageType($imageType) { $this->_imageType = $imageType; }
/**
* Returns the file description.
*
* @return string
*/
public function getDescription() { return $this->_description; }
/**
* Sets the content 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 embedded image data.
*
* @return string
*/
public function getImageData() { return $this->_imageData; }
/**
* Sets the embedded image data. Also updates the image size field to
* correspond the new data.
*
* @param string $imageData The image data.
*/
public function setImageData($imageData)
{
$this->_imageData = $imageData;
$this->_imageSize = strlen($imageData);
}
/**
* Returns the size of the embedded image data.
*
* @return integer
*/
public function getImageSize() { return $this->_imageSize; }
/**
* Returns the frame raw data.
*
* @return string
*/
public function __toString()
{
$data = Transform::toUInt8($this->_encoding) . $this->_mimeType . "\0" .
Transform::toUInt8($this->_imageType);
switch ($this->_encoding) {
case self::UTF16:
case self::UTF16LE:
$data .= Transform::toString16
($this->_description, $this->_encoding == self::UTF16 ?
Transform::MACHINE_ENDIAN_ORDER : Transform::LITTLE_ENDIAN_ORDER) .
"\0\0";
break;
case self::UTF16BE:
$data .= Transform::toString16BE($this->_description) . "\0\0";
break;
default:
$data .= $this->_description . "\0";
}
parent::setData($data . $this->_imageData);
return parent::__toString();
}
}
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