I'm not sure I can do this.

CsoundVST running standalone has to dispatch FLTK events when only the GUI 
is running, when Python is running, and when Csound is running. If it was 
just the GUI and Csound I could do it. But Python doesn't have a "yield" 
callback as Csound does.

Perhaps I could use a Python threading.timer to call Csound's yield and 
simulate a "yield" callback. Starting and stopping this timer would have to 
be prefix and postfix to each script executed. But then that timer would be 
fired from a different thread, wouldn't it?

A completely general solution would be for Csound to provide its own event 
loop that all code running Csound must use, and into which can be plugged 
various callbacks and dispatchers. So Csound would reinvent X windows... not 
sure I want to go there.

Regards,
Mike


----- Original Message ----- 
From: "Victor Lazzarini" 
To: "Michael Gogins" ; "Developer discussions" 

Sent: Saturday, October 28, 2006 3:32 PM
Subject: Re: [Cs-dev] internal callback


> My suggestion is to keep the GUI stuff in the same
> thread which csoundPerformKsmps() is running. That seems
> to be main problem: having FLTK code in two or more separate
> threads, and also calling FL::wait from a thread other
> than the main one (this is why multithreaded FLTK widgets
> do not work well). If you keep everything in the same
> thread and do not call FL::wait from a non-main thread,
> it should be OK. At least, the FLTK code guidelines will be
> followed.
>
> I'd suggest putting all the GUI event processing in a
> Yield callback.
>
> Victor
>> CsoundVST as a plugin runs in two threads, both managed by
>> the VST ghost,  one for the GUI, one for the audio and
>> MIDI processing callbacks. In the  AEffect::idle callback,
>> I call Fl::wait to handle FLTK events.
>>
>> CsoundVST as a standalone runs in the Fl::run thread, then
>> creates a new  thread for each Csound or Python run.
>>
>> Do you have any suggestions on how to manage these? I'm
>> willing to do a bit  of rewriting to make things work.
>>
>> Does csound5gui run in the FLTK thread, then in a callback
>> run a Csound  performance that calls Fl::wait to dispatch
>> FLTK events? I could probably do  that in standalone mode,
>> but I can't do it in VST plugin mode, because the  host is
>> managing the callbacks and threads. FLTK events have to be
>> dispatched both when Csound is running, and when it is not
>> running.
>>
>> Regards,
>> Mike
>>
>> ----- Original Message -----
>> From: "Victor Lazzarini" 
>> To: "Developer discussions"
>>  Sent: Saturday,
>> October 28, 2006 9:11 AM Subject: Re: [Cs-dev] internal
>> callback
>>
>>
>> > yes, but is the GUI (using FLTK) for your host in a
>> > separate thread from Csound? If it is, that is the
>> problem. >
>> > Winsound uses Yield to update its GUI and therefore
>> > is completely single-threaded.
>> >
>> > Victor
>> >
>> >> But I have the same problem (dead widget windows) with
>> or >> without FLTK  threads. I may have yet another thread
>> in >> there, it was so long ago I have  forgotten. Would
>> that >> cause a problem?
>> >>
>> >> Regards,
>> >> Mike
>> >>
>> >> ----- Original Message -----
>> >> From: "Victor Lazzarini" 
>> >> To: "Developer discussions"
>> >>  Sent: Saturday,
>> >> October 28, 2006 4:26 AM Subject: Re: [Cs-dev] internal
>> >> callback
>> >>
>> >>
>> >> > No FLTK threads fixes it for widgets and graphs,
>> >> > but not widgets, graphs and keyboard.
>> >> >
>> >> > As for CsoundVST, if you use FLTK on a separate
>> >> > thread inside it for its GUI, then that's why it
>> >> > does not work. Winsound works because it's
>> >> single-threaded. >
>> >> > Victor
>> >> >
>> >> >>
>> >> >> Hi All,
>> >> >>
>> >> >> I just wanted to say I tried compiling with
>> >> noFLTKThreads >> last night and was able to run the
>> >> keyboard or widget >> windows, but not the graph
>> displays. >> >>
>> >> >> For CsoundVST, what happens when you try to run
>> CSD's >> with >> FLTK widgets?  (No Windows, dead windows,
>> etc.) >> >>
>> >> >> steven
>> >> >>
>> >> >> On 10/28/06, Michael Gogins 
>> >> wrote: >> > Could you either take a look at the
>> >> CsoundVST.cpp and >> > CsoundVstFltk.cpp code (it is
>> >> currently built with >> > noFLTKThreads=0), or explain
>> to >> me what I would need to >> do to get FLTK widgets to
>> work >> in CsoundVST? > >> > Regards,
>> >> >> > Mike
>> >> >> >
>> >> >> > ----- Original Message -----
>> >> >> > From: "Victor Lazzarini"
>>  >> >> > To:
>>  >> >> > Sent: Friday,
>> October 27, 2006 8:32 AM >> >> > Subject: [Cs-dev]
>> internal callback >> >> >
>> >> >> >
>> >> >> > >I have made the changes and tested on Windows,
>> all >> >> > seems OK, now in CVS. >Now
>> >> >> > > we need to test more carefully to see if this
>> has >> >> > > actuall fixed anything. But
>> >> >> > > I think this *at least* will prevent future
>> issues >> >> > > with host yield callbacks.
>> >> >> > >
>> >> >> > > Victor
>> >> >> > >
>> >> >> > > Victor Lazzarini
>> >> >> > > Music Technology Laboratory
>> >> >> > > Music Department
>> >> >> > > National University of Ireland, Maynooth
>> >> >> > >
>> >> >> > >
>> >> >> > >
>> >> >>
>> >>
>> ----------------------------------------------------------
>> >> >> > > --------------- Using Tomcat but need to do
>> more? >> Need >> > > to support web services, security?
>> Get stuff >> done >> > > quickly with pre-integrated
>> technology to make >> your >> > > job easier Download IBM
>> WebSphere Application >> Server >> > > v.1.0.1 based on
>> Apache Geronimo >> >>
>> >> >
>> >>
>> >
>>
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> >> >> > > _______________________________________________
>> >> >> > > Csound-devel mailing list
>> >> >> > > Csound-devel@lists.sourceforge.net
>> >> >> > >
>> >> >>
>> >>
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> >> >> > > >> > >> >>
>> >>
>> ----------------------------------------------------------
>> >> >> > --------------- Using Tomcat but need to do more?
>> >> Need >> > to support web services, security? Get stuff
>> >> done >> quickly with pre-integrated technology to make
>> >> your job >> > easier Download IBM WebSphere Application
>> >> Server v.1.0.1 >> > based on Apache Geronimo >> >>
>> >> >
>> >>
>> >
>>
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> >> >> > _______________________________________________
>> >> >> > Csound-devel mailing list
>> >> >> > Csound-devel@lists.sourceforge.net
>> >> >> >
>> >> >>
>> >>
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> >> >> > >> >> >>
>> >>
>> ----------------------------------------------------------
>> >> >> --------------- Using Tomcat but need to do more?
>> Need >> to >> support web services, security? Get stuff
>> done >> quickly >> with pre-integrated technology to make
>> your job >> easier >> Download IBM WebSphere Application
>> Server >> v.1.0.1 based on >> Apache Geronimo
>> >> >>
>> >> >
>> >>
>> >
>>
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> >> >> _______________________________________________
>> >> >> Csound-devel mailing list
>> >> >> Csound-devel@lists.sourceforge.net
>> >> >>
>> >>
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> >> > > >>
>> ----------------------------------------------------------
>> >> > --------------- Using Tomcat but need to do more?
>> Need >> > to support web services, security? Get stuff
>> done >> > quickly with pre-integrated technology to make
>> your job >> > easier Download IBM WebSphere Application
>> Server v.1.0.1 >> > based on Apache Geronimo
>> >>
>> >
>>
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> >> > _______________________________________________
>> >> > Csound-devel mailing list
>> >> > Csound-devel@lists.sourceforge.net
>> >> >
>> >>
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> >> >>
>> >>
>> ----------------------------------------------------------
>> >> --------------- Using Tomcat but need to do more? Need
>> to >> support web services, security? Get stuff done
>> quickly >> with pre-integrated technology to make your job
>> easier >> Download IBM WebSphere Application Server
>> v.1.0.1 based on >> Apache Geronimo
>> >>
>> >
>>
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> >> _______________________________________________
>> >> Csound-devel mailing list
>> >> Csound-devel@lists.sourceforge.net
>> >>
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>> > >
>> ----------------------------------------------------------
>> > --------------- Using Tomcat but need to do more? Need
>> > to support web services, security? Get stuff done
>> > quickly with pre-integrated technology to make your job
>> > easier Download IBM WebSphere Application Server v.1.0.1
>> > based on Apache Geronimo
>>
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> > _______________________________________________
>> > Csound-devel mailing list
>> > Csound-devel@lists.sourceforge.net
>> >
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>>
>>
>>
>> ----------------------------------------------------------
>> --------------- Using Tomcat but need to do more? Need to
>> support web services, security? Get stuff done quickly
>> with pre-integrated technology to make your job easier
>> Download IBM WebSphere Application Server v.1.0.1 based on
>> Apache Geronimo
>>
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel 




-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Csound-devel mailing list
Csound-devel@lists.sourceforge.net