Bruce, can you comment on the C++ thing though? Could I write this JS implementation for a C++ class instead, or does it have to be C?
Arve On Fri, Sep 12, 2014 at 12:08 PM, Arve Knudsen <[email protected]> wrote: > Bruce, ahhh thank you, that was the missing piece of the puzzle. It works > now! > > Arve > > On Fri, Sep 12, 2014 at 12:05 PM, Bruce Mitchener < > [email protected]> wrote: > >> 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. >> > > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. 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