[chuck-users] trying to implement a midi sequencer in chuck

[d]

Im using jack with fluidsynth.

I had some confusion about whether each
spork had its own "now" but I did a
test script and that seems to be the case.

I have tried adding me.yeild in various
places but no joy.

I created a midi file with a triad in
in three tracks ..8 quarter notes.
The events seem to be correct
but the output is only the last
spork. Perhaps its a problem
with my setup.
If i play the file with fludidynth
I get what I expected.

Any suggestions appreciated.
thanks
-----
MidiFileIn min;
MidiOut mout;
MidiMsg msg;
string filename;
me.arg(0) => filename;
if( !min.open(filename) ){
   <<< "unable to open MIDI file:'",filename >>>;
    me.exit();
}
mout.open(0);
spork ~ track(1);
spork ~ track(2);
spork ~ track(3);
5::second=>now;

function void  track(int t) {
    10::ms =>now;
    while( min.read(msg,t))
    {
  <<<t,msg.when,msg.data1&0x0f,msg.data2,msg.data3 >>>;
      10::ms =>now;
	 msg.when=> now;
         mout.send(msg);
	 me.yield();
    }
}

1 0.000000 0 75 0 
2 0.000000 1 75 0 
3 0.000000 2 75 0 
1 0.000000 0 75 0 
2 0.000000 1 75 0 
3 0.000000 2 75 0 
1 0.000000 0 60 90 
2 0.000000 1 64 90 
3 0.000000 2 55 90 
1 18000.000000 0 60 0 
2 18000.000000 1 64 0 
3 18000.000000 2 55 0 
1 0.000000 0 60 90 
2 0.000000 1 64 90 
3 0.000000 2 55 90 
1 18000.000000 0 60 0 
2 18000.000000 1 64 0 
3 18000.000000 2 55 0 
1 0.000000 0 60 90 
2 0.000000 1 64 90 
3 0.000000 2 55 90 
1 18000.000000 0 60 0 
2 18000.000000 1 64 0 


On Sat, 12 Feb 2022 10:22:17 -0800
Forrest Curo <treegestalt at gmail.com> wrote:

> So how is this going to change their timing? It shouldn't, unless some
> process somewhere keeps running and won't yield when the wait ends
> (and the waiting spork wants to start from there.)
> 
> Jack or fluidsynth -- or what?
> 
> On Sat, Feb 12, 2022 at 9:55 AM Curtis Ullerich
> <curtullerich at gmail.com> wrote:
> 
> > "advancing time" means "yield for this long." so the other shreds
> > will be executing, or yielding, as their own timing dictates.
> >
> > On Sat, Feb 12, 2022, 06:40 Forrest Curo <treegestalt at gmail.com>
> > wrote: 
> >> "Advancing time on a spork" means to "Wait until this amount of
> >> time has elapsed."
> >> If one spork is waiting for time to elapse, the others will be
> >> doing... what?
> >>
> >> On Fri, Feb 11, 2022 at 1:36 PM d <dchuck at yurfish.com> wrote:
> >>  
> >>>
> >>> Yes,thats the one I modeled mine after.
> >>> I removed the ugen stuff and replaced it with
> >>> send (midiout).
> >>> I have fluidsynth on jack The behaviour is strange.
> >>> It appears that advancing time on a spork advances
> >>> time in others and events get missed
> >>> But I could be wrong. I have notes with
> >>> no note off and CC that never happens
> >>>
> >>> It works fine for single track files.
> >>>
> >>> On Fri, 11 Feb 2022 13:10:20 -0800
> >>> Dana Batali <dana.batali at gmail.com> wrote:
> >>>  
> >>> > Hi Davud,  have you seen this example?
> >>> >
> >>> > https://cannerycoders.com/docs/chuck/examples/midi/midifile-play.html
> >>> >
> >>> > One obvious point is that min.read accepts a track number.
> >>> > _______________________________________________
> >>> > chuck-users mailing list
> >>> > chuck-users at lists.cs.princeton.edu
> >>> > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users  
> >>>
> >>>
> >>> On Fri, 11 Feb 2022 13:10:20 -0800
> >>> Dana Batali <dana.batali at gmail.com> wrote:
> >>>  
> >>> > Hi Davud,  have you seen this example?
> >>> >
> >>> > https://cannerycoders.com/docs/chuck/examples/midi/midifile-play.html
> >>> >
> >>> > One obvious point is that min.read accepts a track number.
> >>> > _______________________________________________
> >>> > chuck-users mailing list
> >>> > chuck-users at lists.cs.princeton.edu
> >>> > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users  
> >>>
> >>> _______________________________________________
> >>> chuck-users mailing list
> >>> chuck-users at lists.cs.princeton.edu
> >>> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
> >>>  
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> >>  
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