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JavaScript FLAC encoder, decoder

Home Page: https://blog.rillke.com/flac.js/

License: Other

JavaScript 70.09% HTML 20.30% Shell 9.61%

flac javascript encoder decoder emscripten audio lossless-compression-algorithm

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opendawn stephenlaughton maxgronlund autoupcloud sulinhuang tengjiang666 diewland tomyaudiofilo zoo-digital wangpengpeng4313 gordeyev jianpenghe

flac.js's Issues

bad ioctl syscall when building

I'm building from source and it seems to build okay, but whenever I run the resulting JS files to encode a .wav file, I get this error:

abort("bad ioctl syscall 21523") at Error
    at jsStackTrace (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:1:18185)
    at stackTrace (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:1:18368)
    at abort (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:15:10936)
    at ___syscall54 (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:1:103969)
    at Rj (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:5:146550)
    at fh (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:5:9403)
    at th (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:5:29987)
    at Array.sh (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:5:29642)
    at Array.uf (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:6:66997)
    at lf (eval at global.callEval (http://localhost:3000/flac/FlacEncoder.js:414:10), <anonymous>:6:52858)

Integer Overflow

flac.js outputs integer overflow exception for specific type of data. Here is the wav file and the code to reproduce the error.

var file = document.getElementById('file').files[0];

var reader = new FileReader();

reader.onload = function (e) {
  worker = new Worker('../assets/worker/EmsWorkerProxy.js');
  worker.onmessage = onWorkerMessage;
  worker.onerror = onWorkerError;

  var encodedName = file.name.replace(/\.[^\.]+$/, '.flac');
  console.log('encoding ' + file.name + ' to ' + encodedName);

  var args = [
    file.name
  ];

  var inData = {};
  inData[file.name] = new Uint8Array(reader.result);
  console.log(inData[file.name]);

  var outData = {};
  outData[encodedName] = {
    // Its MIME type
    'MIME': 'audio/flac'
  };

  worker.postMessage({
    command: 'encode',
    args: args,
    outData: outData,
    fileData: inData
  });
}

reader.readAsArrayBuffer(file);

Probably the same thing happens in the sample site. In my code it gets broken when the progress is 71% complete, can't see the sample site's logs but the progress bar is stucked around 70%.

Flac CLI works perfectly fine. Tested on version 1.3.2 win64.

Can someone explain the difference between asm and wasm files

Hi,

first things first cool thing, thanks

I have implemented it in a Chrome Extension with some other Projects to convert Soundfiles
While i implementing i have get some problems with the files under wasm but the files under asm run nicely

For another Project i have started to work on Webassembly first time and so it would help me, if someone explains the difference and how they get created

Thanks

Decoding example

I'm having a hard time figuring how to decode flac files in to an array
I'm modifying the demo project
and call the worker with

worker.postMessage({
  command: 'prefetch',
  args: args,
  outData: outData,
  fileData: inData
 });

Stepping through the code takes med to FlacEncoder.js#onDownloadComplete looks like a dead end

ERR "float unrepresentable in integer range"

Hello,

Getting an error while trying to encode *.wav data to flac.
I try convert it with your demo. https://rawgit.com/Rillke/flac.js/master/iframe.html
Can you help me resolve it?
convert_files.zip

Crashing on large file size

I tried running a large wav file (almost 600M) through flac.js, but it keeps crashing w/ the Chrome "Aw Snap" error message around 49%. Is there another solution for working with large files?

chrome debug log:

<--- Last few GCs --->

   75225 ms: Scavenge 1339.1 (1349.4) -> 1337.1 (1349.4) MB, 0.1 / 0.0 ms (+ 0.6 ms in 32 steps since last GC) [allocation failure].
   75864 ms: Scavenge 1339.1 (1349.4) -> 1337.1 (1349.4) MB, 0.1 / 0.0 ms (+ 0.5 ms in 31 steps since last GC) [allocation failure].
   76512 ms: Scavenge 1339.1 (1349.4) -> 1337.1 (1349.4) MB, 0.2 / 0.1 ms (+ 0.5 ms in 32 steps since last GC) [allocation failure].


<--- JS stacktrace --->

==== JS stack trace =========================================

Security context: 0x2b82e2d48f9 <a DedicatedWorkerGlobalScope with map 0x34aea4d0ca79>
    2: expandFileStorage [0x2b82e204311 <undefined>:~1] [pc=0x389c1778f1c2](this=0x55512f7af41 <an Object with map 0x34aea4d145e1>,node=0x16792c4b5041 <JS Object>,newCapacity=104644370)
    3: write [0x2b82e204311 <undefined>:~1] [pc=0x389c1778caac](this=0x55512f8d391 <an Object with map 0x1642061bfe9>,stream=0x16792c4b51a9 <JS Object>,buffer=0x55512f7b...

Demo: dash dash args illegal

[email protected]$ flac "--endian=\"little\"" "--channels=\"1\"" "--bps=\"16\"" "--sample-rate=\"16000\"" "--sign=\"signed\"" "tmp.raw"

loading web worker scripts (0.7 + 2.8 MiB) ...

Worker downloaded successfully.

Loading run dependencies. Outstanding: 1

Loading run dependencies. Outstanding: 0

ERROR: argument to --endian must be "big" or "little"
ERROR: argument to --sign must be "signed" or "unsigned"`

Encoding .amr files

Hello,

First I want to thank you for the wonderful work you did with this project, it works perfectly for me when I try to encode wav files.

Then my problem: when I use it to encode amr file into flac, it doesn't work. I know you don't say in the README.md that amr is a supported format. So I wonder: is there a simple way to modify the encoder so that it can support amr input files?

Is this library production-ready?

It seems to work nicely in the demo, but since it's been inactive for a long time and doesn't appear to have any users, I'd just like to confirm this is considered sufficient for a professional website. It's the only JS library I could find that can both encode and decode FLAC.

Thanks.

Encoding Raw Data to Flac

Hello,

Getting an error while trying to encode raw data which I decoded by using Web Audio Api's decodeAudioData method.

var fileName = "pcmData";
var encodedName = "encoded.flac";

var args = [
  "--sample-rate=16",
  "--sign=signed",
  "--channels=1",
  "--bps=16",
  "--endian=big",
  fileName
];

var inData = {};
inData[fileName] = buffer;

var outData = {};
outData[encodedName] = {
  // Its MIME type
  'MIME': 'audio/flac'
};

worker.postMessage({
  command: 'encode',
  args: args,
  outData: outData,
  fileData: inData
});

Worker message gives me,

e.data.reply= err
e.data.values[0]= No such file or directory

question: is it possible to stream encode/decode?

I'm looking for a way to encode buffers of WAV data to a compressed lossless format on the fly (doesn't have to be FLAC but it seems like a good option). Is it theoretically possibly to edit this library to do that? I know a good bit about WAV format but not much at all about FLAC.

In other words, the source buffer would be a single sample of WAV encoded data, and I'd want to encode that single buffer to FLAC data.

Thanks for this great tool

Created node.js encoder example

https://github.com/maxgronlund/flac.js
I'm trying to figure how to create a decoder example

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