Node.js: aac-repair

node.js translation of my Python repository.

aac-repair is a sound file repair tool for .aac and .aacp files. It reads the file header codes.

• express server terminal with React based frontend file upload
• command line support
• module import

Why?

Internet browser refuse to play defective aac files from local folders.

Recorded internet or personal aac streams get a clean cut for header and payload.

Drag and drop a file into the browser window to check

Installation

Install global to get the executable aac-repair.

npm install aac-repair -g

Usage

OS got a User Interface (UI)

Start the Frontend and Backend. Get a Browser window. Terminal window shows progress.

foo@bar:~$ aac-repair  // run the executable if installed global

// serverApp.js - in a local folder
const aac = require("aac-repair");
aac.app( {browser: true} );

foo@bar:~$ node serverApp.js

Folder

The repaired files are dumped to aacRepaired folder beneath.

const aac = require("aac-repair");
aac.repairAacFolder("C:\\Users\\Schtroumpfette\\sound");

File repair

const aac = require("aac-repair");

async function getBytes() {
    let byteArray = await aac.readOneFile("C:\\Users\\Schtroumpfette\\sound\\damaged.aac");
    return byteArray;
}

const oneFile = async () => {  // head and tail cut
    getBytes().then((byteArray) => {
        aac.repairOneFileAac(byteArray)
          .then((repaired) => {console.log("oneFile->", repaired);});
      });
    }
    oneFile();

const bodyCut = async () => {
    let byteArray = await getBytes();
    let head = await aac.repairHead(byteArray);
    let body = await aac.repairTail(head);
    console.log("bodyCut->", body);
    return body;
    }
    bodyCut();

File (folder) test preparation

The cut files (-1 Byte) are dumped to aacDamaged folder beneath.

const aac = require("aac-repair");
aac.cutOneByteAacFolder("C:\\Users\\Schtroumpfette\\sound");

Command line Browser start

foo@bar:~$ aac-repair

Install the package in a folder. Got to "node_modules/aac-repair" directory. --frontend

foo@bar:~$ cd node_modules/aac-repair
foo@bar:~$ node server-aac.js  --frontend

Command line folder repair

Install the package in a folder. Got to "node_modules/aac-repair" directory. -d "path"

foo@bar:~$ cd node_modules/aac-repair
foo@bar:~$ node aacWorker.js -d "./repairDamagedFilesFolder"

Credit

Stack Overflow Website for tripwire awareness and workarounds,

Document: Recommendation ITU-R BS.1196-4(02/2015) Audio coding for digital broadcasting https://www.itu.int/rec/R-REC-BS.1196/en

Document: ETSI TS 102 563 https://www.etsi.org/deliver/etsi_ts/102500_102599/102563/01.02.01_60/ts_102563v010201p.pdf

License

Licensed under MIT

Copyright (c) 2024 René Horn