wp-includes/ID3/module.audio.mp3.php:2148$SurroundInfoIDintstring public static function LAMEsurroundInfoLookup($SurroundInfoID) { static $LAMEsurroundInfoLookup = array( 0 => 'no surround info', 1 => 'DPL encoding', 2 => 'DPL2 encoding', 3 => 'Ambisonic encoding' ); return (isset($LAMEsurroundInfoLookup[$SurroundInfoID]) ? $LAMEsurroundInfoLookup[$SurroundInfoID] : 'reserved'); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/module.audio.mp3.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.