wp-includes/ID3/module.audio.ac3.php:493$lengthintint private function readHeaderBSI($length) { $data = substr($this->AC3header['bsi'], $this->BSIoffset, $length); $this->BSIoffset += $length; return bindec($data); }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.ac3.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.