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<?php
/**
* This file is part of the Metadata package.
*
* @author Daniel Schröder <[email protected]>
*/
namespace GravityMedia\Metadata\ID3v2\Filter;
* Synchsafe integer filter class.
* @package GravityMedia\Metadata\ID3v2\Filter
class SynchsafeIntegerFilter
{
* Encode value.
* @param int $value
* @return int
public function encode($value)
return ($value & 0x7f) | ($value & 0x3f80) << 1 | ($value & 0x1fc000) << 2 | ($value & 0xfe00000) << 3;
}
* Decode value.
public function decode($value)
return ($value & 0x7f) | ($value & 0x7f00) >> 1 | ($value & 0x7f0000) >> 2 | ($value & 0x7f000000) >> 3;
GravityMedia /
Metadata
