Reverb is yet another subjective frame, with which you can adjust * echoes of different kinds. Reverb left/right is the delay between every * bounce in milliseconds. Reverb bounces left/right is the number of bounces * that should be made. $FF equals an infinite number of bounces. Feedback is * the amount of volume that should be returned to the next echo bounce. $00 is * 0%, $FF is 100%. If this value were $7F, there would be 50% volume reduction * on the first bounce, 50% of that on the second and so on. Left to left means * the sound from the left bounce to be played in the left speaker, while left * to right means sound from the left bounce to be played in the right speaker. * * Premix left to right is the amount of left sound to be mixed in the right * before any reverb is applied, where $00 id 0% and $FF is 100%. Premix right * to left does the same thing, but right to left. Setting both premix to $FF * would result in a mono output (if the reverb is applied symmetric). There * may only be one RVRB frame in each tag. * * @category Zend * @package Zend_Media * @subpackage ID3 * @author Sven Vollbehr * @author Ryan Butterfield * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License * @version $Id$ */ final class Zend_Media_Id3_Frame_Rvrb extends Zend_Media_Id3_Frame { /** @var integer */ private $_reverbLeft; /** @var integer */ private $_reverbRight; /** @var integer */ private $_reverbBouncesLeft; /** @var integer */ private $_reverbBouncesRight; /** @var integer */ private $_reverbFeedbackLtoL; /** @var integer */ private $_reverbFeedbackLtoR; /** @var integer */ private $_reverbFeedbackRtoR; /** @var integer */ private $_reverbFeedbackRtoL; /** @var integer */ private $_premixLtoR; /** @var integer */ private $_premixRtoL; /** * Constructs the class with given parameters and parses object related * data. * * @param Zend_Io_Reader $reader The reader object. * @param Array $options The options array. */ public function __construct($reader = null, &$options = array()) { parent::__construct($reader, $options); if ($this->_reader === null) { return; } $this->_reverbLeft = $this->_reader->readUInt16BE(); $this->_reverbRight = $this->_reader->readUInt16BE(); $this->_reverbBouncesLeft = $this->_reader->readUInt8(); $this->_reverbBouncesRight = $this->_reader->readUInt8(); $this->_reverbFeedbackLtoL = $this->_reader->readUInt8(); $this->_reverbFeedbackLtoR = $this->_reader->readUInt8(); $this->_reverbFeedbackRtoR = $this->_reader->readUInt8(); $this->_reverbFeedbackRtoL = $this->_reader->readUInt8(); $this->_premixLtoR = $this->_reader->readUInt8(); $this->_premixRtoL = $this->_reader->readUInt8(); } /** * Returns the left reverb. * * @return integer */ public function getReverbLeft() { return $this->_reverbLeft; } /** * Sets the left reverb. * * @param integer $reverbLeft The left reverb. */ public function setReverbLeft($reverbLeft) { return $this->_reverbLeft = $reverbLeft; } /** * Returns the right reverb. * * @return integer */ public function getReverbRight() { return $this->_reverbRight; } /** * Sets the right reverb. * * @param integer $reverbRight The right reverb. */ public function setReverbRight($reverbRight) { return $this->_reverbRight = $reverbRight; } /** * Returns the left reverb bounces. * * @return integer */ public function getReverbBouncesLeft() { return $this->_reverbBouncesLeft; } /** * Sets the left reverb bounces. * * @param integer $reverbBouncesLeft The left reverb bounces. */ public function setReverbBouncesLeft($reverbBouncesLeft) { $this->_reverbBouncesLeft = $reverbBouncesLeft; } /** * Returns the right reverb bounces. * * @return integer */ public function getReverbBouncesRight() { return $this->_reverbBouncesRight; } /** * Sets the right reverb bounces. * * @param integer $reverbBouncesRight The right reverb bounces. */ public function setReverbBouncesRight($reverbBouncesRight) { $this->_reverbBouncesRight = $reverbBouncesRight; } /** * Returns the left-to-left reverb feedback. * * @return integer */ public function getReverbFeedbackLtoL() { return $this->_reverbFeedbackLtoL; } /** * Sets the left-to-left reverb feedback. * * @param integer $reverbFeedbackLtoL The left-to-left reverb feedback. */ public function setReverbFeedbackLtoL($reverbFeedbackLtoL) { $this->_reverbFeedbackLtoL = $reverbFeedbackLtoL; } /** * Returns the left-to-right reverb feedback. * * @return integer */ public function getReverbFeedbackLtoR() { return $this->_reverbFeedbackLtoR; } /** * Sets the left-to-right reverb feedback. * * @param integer $reverbFeedbackLtoR The left-to-right reverb feedback. */ public function setReverbFeedbackLtoR($reverbFeedbackLtoR) { $this->_reverbFeedbackLtoR = $reverbFeedbackLtoR; } /** * Returns the right-to-right reverb feedback. * * @return integer */ public function getReverbFeedbackRtoR() { return $this->_reverbFeedbackRtoR; } /** * Sets the right-to-right reverb feedback. * * @param integer $reverbFeedbackRtoR The right-to-right reverb feedback. */ public function setReverbFeedbackRtoR($reverbFeedbackRtoR) { $this->_reverbFeedbackRtoR = $reverbFeedbackRtoR; } /** * Returns the right-to-left reverb feedback. * * @return integer */ public function getReverbFeedbackRtoL() { return $this->_reverbFeedbackRtoL; } /** * Sets the right-to-left reverb feedback. * * @param integer $reverbFeedbackRtoL The right-to-left reverb feedback. */ public function setReverbFeedbackRtoL($reverbFeedbackRtoL) { $this->_reverbFeedbackRtoL = $reverbFeedbackRtoL; } /** * Returns the left-to-right premix. * * @return integer */ public function getPremixLtoR() { return $this->_premixLtoR; } /** * Sets the left-to-right premix. * * @param integer $premixLtoR The left-to-right premix. */ public function setPremixLtoR($premixLtoR) { $this->_premixLtoR = $premixLtoR; } /** * Returns the right-to-left premix. * * @return integer */ public function getPremixRtoL() { return $this->_premixRtoL; } /** * Sets the right-to-left premix. * * @param integer $premixRtoL The right-to-left premix. */ public function setPremixRtoL($premixRtoL) { $this->_premixRtoL = $premixRtoL; } /** * Writes the frame raw data without the header. * * @param Zend_Io_Writer $writer The writer object. * @return void */ protected function _writeData($writer) { $writer->writeUInt16BE($this->_reverbLeft) ->writeUInt16BE($this->_reverbRight) ->writeUInt8($this->_reverbBouncesLeft) ->writeUInt8($this->_reverbBouncesRight) ->writeUInt8($this->_reverbFeedbackLtoL) ->writeUInt8($this->_reverbFeedbackLtoR) ->writeUInt8($this->_reverbFeedbackRtoR) ->writeUInt8($this->_reverbFeedbackRtoL) ->writeUInt8($this->_premixLtoR) ->writeUInt8($this->_premixRtoL); } }