[chuck-dev] Fwd: Porting ChucK to JavaScript with Emscripten

Arve Knudsen arve.knudsen at gmail.com
Thu Sep 18 18:33:46 EDT 2014

I've started porting my ChucKJS examples to ChucK; they are available in
the js/examples/ subdirectory, after building with grunt in js/ (
https://github.com/aknuds1/chuck/tree/emscripten/js). Only a few of the
examples work so far for different reasons, unfortunately, f.ex.
examples/example1.html and examples/example2.html.


On Wed, Sep 17, 2014 at 9:21 PM, Arve Knudsen <arve.knudsen at gmail.com>

> Well, what do you know, the Emscripten port of ChucK now produces sound! :)
> To hear for yourself, make emscripten and open emscripten/chuck.html in a
> Web Audio enabled browser, e.g. Chrome. It should produce a short sine tone.
> Best,
> Arve
> On Thu, Sep 11, 2014 at 6:28 PM, Arve Knudsen <arve.knudsen at gmail.com>
> wrote:
>> I suggest we coordinate work on Emscriptenising ChucK through the GitHub
>> issues of my ChucK fork (https://github.com/aknuds1/chuck). I'm
>> currently concentrating on replacing RtAudio with a shim, which I think at
>> least would be the best approach, and I've got a pretty good handle on how
>> to do it. There seems to be little documentation on how to write these
>> shims, so I'm going to use Emscripten's bundled shims as reference, after
>> receiving some useful advice on their mailing list.
>> Arve
>> On Thu, Sep 11, 2014 at 11:56 AM, Arve Knudsen <arve.knudsen at gmail.com>
>> wrote:
>>> Hi Phill!
>>> First of all, you might want to check out the fruits of my existing
>>> efforts, if you haven't already: ChucKJS (
>>> https://github.com/aknuds1/chuckjs) and ChucK Demos (
>>> http://chuckdemos.com, this is based on ChucKJS).
>>> Second, I have a fork of ChucK which I linked to in my original email:
>>> https://github.com/aknuds1/chuck/tree/emscripten. The work goes on in
>>> the emscripten branch. To build this, you must have sourced the Emscripten
>>> SDK (the whole thing is a bit ramshackle for now, sorry about that) and
>>> type "make emscripten".
>>> Sure you're welcome to help out! Can you write C++? The project is C++
>>> driven, since the idea is to transform ChucK sources (in C++) to JavaScript
>>> automatically. Right now, I mainly need to write Emscripten shims
>>> (emulations) of ChucK dependencies such as the audio driver (I'm currently
>>> thinking we should emulate ASIO).
>>> Otherwise, we will probably need some JavaScript ("unit") tests down the
>>> line to verify that e.g. the shims do what they're supposed to.
>>> Best,
>>> Arve
>>> On Sep 11, 2014 11:43 AM, "Phill" <phillip.hermans at gmail.com> wrote:
>>>> Howdy,
>>>> I am a huge fan of ChucK and am just not getting seriously involved
>>>> with JS.
>>>> Mainly I'd like to say that have chuck available in JS is a great idea,
>>>> as far as how to implement I defer to your judgment.
>>>> Basically I want to give you kudos and also offer any help I may be
>>>> able to give as a code monkey in this regard.
>>>> Have you started a new GitHub for this version?
>>>> thanks,
>>>> pmh
>>>> https://github.com/cheesymoo
>>>> ---------- Forwarded message ----------
>>>> From: Arve Knudsen <arve.knudsen at gmail.com>
>>>> Date: Wed, Sep 10, 2014 at 9:10 PM
>>>> Subject: [chuck-dev] Porting ChucK to JavaScript with Emscripten
>>>> To: ChucK Developer Mailing List <chuck-dev at lists.cs.princeton.edu>
>>>> Hi guys
>>>> I've re-directed my focus from manually porting ChucK to JavaScript
>>>> (i.e., ChucKJS) to an automatic port with the help of the Emscripten tool (
>>>> http://emscripten.org/):
>>>> https://github.com/aknuds1/chuck/tree/emscripten. I don't know yet how
>>>> this'll pan out, but I'm thinking it should be more future proof than
>>>> having to maintain an independent JavaScript version of ChucK. Also, it
>>>> ought to be much more performant, since Emscripten generates asm.js rather
>>>> than vanilla JavaScript.
>>>> The status of the port is that I am currently able to generate a
>>>> JavaScript library, chuck.js, which can be invoked, but I need to write
>>>> shims for dependencies such as the audio driver to actually do anything
>>>> useful.
>>>> Arve
>>>> _______________________________________________
>>>> chuck-dev mailing list
>>>> chuck-dev at lists.cs.princeton.edu
>>>> https://lists.cs.princeton.edu/mailman/listinfo/chuck-dev
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