I'm no Mac expert. What you want to do is possible both on Windows with LoadLibrary and GetProcAddr, and on Linux/Unix with dlopen and dlsym. I would _think_ that the latter, or close to it, is possible on OS X.

Anyway, the function pointers will be in the CSOUND struct. If a dlopen'd plugin can call a pointer off the CSOUND struct, which it can, then I think it should work the other way too, that a host could call a pointer off a CSOUND struct from csoundCreate.

Regards,
Mike

-----Original Message-----
>From: matt ingalls 
>Sent: Sep 13, 2006 1:33 PM
>To: Victor.Lazzarini@nuim.ie, Developer discussions 
>Subject: Re: [Cs-dev] dynamically load csoundlib?
>
>
>On Sep 12, 2006, at 11:20 AM, Victor Lazzarini wrote:
>
>> When you say static, do you actually mean linked against
>> a dynamic lib? Because static really means the actual
>> code being statically loaded into the executable.
>
>sorry, yes - that's what i meant.
>
>> Well, as far as I know CsoundLib is designed to be linked
>> against, rather than loaded at runtime. But this does not
>> mean it can't be done. Generally (well you know this
>> already) bundles are loaded at runtime and dylibs linked
>> against. But dylibs can be loaded at runtime, plugin
>> opcodes are dylibs that are used like that.
>>
>> I am just wondering whether it will be more of a headache
>> to do this that it might not be worth it.
>
>well i am not suggesting to eliminate how it currently works, i
>was just wondering if it was possible to do it all at run-time.
>  how i did with with csound4, was i loaded the the csoundLib, then
>i  grabbed the API function
>pointers from the CSOUND struct and call the functions that way.
>i don't know if this is possible with csound5, or if the function  
>pointers
>are just for the opcode plugins -- i guess i should just look at the  
>code,
>huh??
>
>another way around this is to try to have CsoundLib.framework inside my
>application bundle ( although i think this might come close to violating
>the license).   or perhaps the most simplest way is distribute the  
>csoundlib
>and supportlibs with my installer.
>
>thanks,
>m
>
>>
>> Victor
>>>
>>> does any csound front end load the csoundlib dynamically?
>>> and how it would this work -- do you need to make calls to
>>> find pointers to the API functions or ??
>>>
>>> i used to do this with csound4, but now with csound5 i
>>> statically   link to it.
>>> the downside is that if the csoundLib isn't installed (or
>>> perhaps   just an incompatible version?)
>>> my host app will not even launch.  i can live with that,
>>> but i could   see in the future having
>>> this or other applications where csound is optional and i
>>> would want   to use my app
>>> even when csoundLib is not installed.
>>>
>>> thanks,
>>> m
>>>
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