6a78fc508e
git-svn-id: http://php-reader.googlecode.com/svn/branches/zend@153 51a70ab9-7547-0410-9469-37e369ee0574
130 lines
3.5 KiB
PHP
130 lines
3.5 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Media
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* @subpackage ID3
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**#@+ @ignore */
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require_once 'Zend/Media/Id3/Frame.php';
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require_once 'Zend/Media/Id3/Timing.php';
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/**#@-*/
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/**
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* The <i>Position synchronisation frame</i> delivers information to the
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* listener of how far into the audio stream he picked up; in effect, it states
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* the time offset from the first frame in the stream. There may only be one
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* POSS frame in each tag.
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*
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* @category Zend
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* @package Zend_Media
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* @subpackage ID3
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* @author Sven Vollbehr <sven@vollbehr.eu>
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* @author Ryan Butterfield <buttza@gmail.com>
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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final class Zend_Media_Id3_Frame_Poss extends Zend_Media_Id3_Frame
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implements Zend_Media_Id3_Timing
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{
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/** @var integer */
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private $_format = Zend_Media_Id3_Timing::MPEG_FRAMES;
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/** @var integer */
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private $_position;
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/**
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* Constructs the class with given parameters and parses object related
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* data.
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*
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* @param Zend_Io_Reader $reader The reader object.
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* @param Array $options The options array.
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*/
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public function __construct($reader = null, &$options = array())
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{
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parent::__construct($reader, $options);
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if ($this->_reader === null) {
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return;
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}
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$this->_format = $this->_reader->readUInt8();
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$this->_position = $this->_reader->readUInt32BE();
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}
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/**
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* Returns the timing format.
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*
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* @return integer
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*/
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public function getFormat()
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{
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return $this->_format;
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}
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/**
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* Sets the timing format.
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*
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* @see Zend_Media_Id3_Timing
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* @param integer $format The timing format.
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*/
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public function setFormat($format)
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{
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$this->_format = $format;
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}
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/**
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* Returns the position where in the audio the listener starts to receive,
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* i.e. the beginning of the next frame.
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*
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* @return integer
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*/
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public function getPosition()
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{
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return $this->_position;
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}
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/**
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* Sets the position where in the audio the listener starts to receive,
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* i.e. the beginning of the next frame, using given format.
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*
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* @param integer $position The position.
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* @param integer $format The timing format.
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*/
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public function setPosition($position, $format = null)
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{
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$this->_position = $position;
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if ($format !== null) {
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$this->setFormat($format);
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}
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}
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/**
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* Writes the frame raw data without the header.
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*
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* @param Zend_Io_Writer $writer The writer object.
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* @return void
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*/
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protected function _writeFrame($writer)
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{
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$writer->writeUInt8($this->_format)
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->writeUInt32BE($this->_position);
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}
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}
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