You don't want to put your function inside the $RTAUDIO object. You'd just put it at top level in the LibraryRtAudio object. $RTAUDIO is where you'll put shared internal stuff.
- Bruce On Fri, Sep 12, 2014 at 9:58 AM, Arve Knudsen <[email protected]> wrote: > I need to write a shim for the C++ API RtAudio, i.e. the class RtAudio > really. Your docs show how to write shims for C APIs (e.g. SDL), but not > C++ APIs: > http://kripken.github.io/emscripten-site/docs/porting/connecting_cpp_and_javascript/Interacting-with-code.html?highlight=webidl#implement-a-c-api-in-javascript. > No idea how embind/webidl-binder would fit into this scenario. > > Anyhow, I wrote a (very) simple C wrapper for RtAudio, thus sidestepping > the C++ issue, so I can just write a C API shim. I try to implement a > single C function, rtaudio_initialize, in JavaScript, but it's not found by > the generated JavaScript (chuck.js). I can tell that the shim (or > JavaScript library) is used when building however, since I can have it > break the build by throwing an exception. Why is my JS implementation of > rtaudio_initialize not found?? > > My shim can be seen here: > https://github.com/aknuds1/chuck/blob/emscripten/src/emscripten/shims/rtaudio.js, > and it's incorporated in the build via the --js-library option to > emcc: --js-library emscripten/shims/rtaudio.js. > > Thanks, > Arve > > On Fri, Sep 12, 2014 at 11:31 AM, Alon Zakai <[email protected]> wrote: > >> What do you mean by "shim a C++ API"? And in what way are embind and the >> webidl-binder not sufficient? >> >> - Alon >> >> >> On Thu, Sep 11, 2014 at 7:29 PM, Arve Knudsen <[email protected]> >> wrote: >> >>> I can't see that those docs mention how to shim a C++ API in JavaScript? >>> There is a section on C API though, and how to integrate your shims, so >>> that's helpful at least. Is it simply not possible to shim a C++ API? If >>> so, I'll have to write a C wrapper instead I guess. >>> >>> Arve >>> >>> >>> On Fri, Sep 12, 2014 at 11:17 AM, Alon Zakai <[email protected]> >>> wrote: >>> >>>> General docs on that are at >>>> http://kripken.github.io/emscripten-site/docs/porting/connecting_cpp_and_javascript/Interacting-with-code.html?highlight=webidl >>>> >>>> In particular if you are going to use C++ classes from JS, you probably >>>> want embind or webidl-binder. >>>> >>>> - Alon >>>> >>>> >>>> On Thu, Sep 11, 2014 at 7:02 PM, Arve Knudsen <[email protected]> >>>> wrote: >>>> >>>>> Hi guys >>>>> >>>>> As pertaining my previous more general question about writing >>>>> Emscripten shims, I have a more specific follow-up question. How can I >>>>> write an Emscripten shim library to mimic the RtAudio C++ class >>>>> constructor >>>>> ( >>>>> http://www.music.mcgill.ca/~gary/rtaudio/classRtAudio.html#afd0bfa26deae9804e18faff59d0273d9)? >>>>> And how do I integrate said shim into my build, so that invoking the >>>>> constructor works? The shim will eventually need to do more than just >>>>> mimic >>>>> the constructor of course, but that would be a superb start. >>>>> >>>>> For context, what I'm trying to do is to port the ChucK music >>>>> programming language to JS, my GitHub project can be found here (branch >>>>> emscripten): https://github.com/aknuds1/chuck/tree/emscripten. The >>>>> README includes instructions on how to build with Emscripten. >>>>> >>>>> Let me know if you need to know more. >>>>> >>>>> Best, >>>>> Arve >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "emscripten-discuss" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "emscripten-discuss" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "emscripten-discuss" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "emscripten-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "emscripten-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
