Needs to be C for the JS library stuff to work. - Bruce
On Fri, Sep 12, 2014 at 10:09 AM, Arve Knudsen <[email protected]> wrote: > 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. > 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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