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Re: Explain explicity what function does

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Den torsdag 16 augusti 2018 kl. 01:00:28 UTC+2 skrev Jonas Thörnvall:
> Den torsdag 16 augusti 2018 kl. 00:16:28 UTC+2 skrev Jonas Thörnvall:
> > Den torsdag 16 augusti 2018 kl. 00:11:15 UTC+2 skrev Jonas Thörnvall:
> > > Den onsdag 15 augusti 2018 kl. 23:52:35 UTC+2 skrev Jonas Thörnvall:
> > > > I tried program these functions and i thought i knew what they did, but apparently i don't. First it tries grab midi object and returns success and failure that much i get.
> > > > 
> > > > var output;var input;var inputs;var outputs;var mid; var onMIDIMessage; var message;
> > > > 
> > > > if (navigator.requestMIDIAccess) {
> > > >     navigator.requestMIDIAccess()
> > > >         .then(success, failure);
> > > > }
> > > > 
> > > > function failure () {
> > > >     console.error('No access to your midi devices.'+ + msg )
> > > > }
> > > > 
> > > > function success (midi) {
> > > >     mid=midi;
> > > >     inputs = mid.inputs.values();
> > > >     console.log("Undefined value?="+inputs[0]);
> > > >     // inputs outputs are Iterators
> > > >     for (input = inputs.next(); input && !input.done; input = inputs.next()) {
> > > >        // each time there is a midi message call the onMIDIMessage function?
> > > >        input.value.onmidimessage = onMIDIMessage;
> > > >     } 
> > > > }
> > > > 
> > > > 
> > > > So I thought above success function grabbed The midi object whatever that is listened to incomingmessages on the last port because "next". 
> > > > So it is basicly some sort of port listener, well it seem weird to me, but who am i to judge?
> > > > 
> > > > And that below function listed outputs ports in portout "object array?" and input ports in portin "object array?"
> > > > 
> > > > function selectPorts(){
> > > >    portout = mid.outputs.values();
> > > >    portin = mid.inputs.values();
> > > > 
> > > >    for (input = portin.next(); input && !input.done; input = portin.next()) {
> > > >            var deviceIn = input.value.name;
> > > >            var optin = document.createElement("option");
> > > >            optin.text = deviceIn;
> > > >            document.getElementById("in_portsel").add(optin);
> > > >   } 
> > > >    
> > > >    for (output = portout.next(); output && !output.done; output = portout.next()) {
> > > >        var deviceOut = output.value.name;
> > > >        //console.log(deviceOut);
> > > >        var optout = document.createElement("option");
> > > >        optout.text = deviceOut;
> > > >        document.getElementById("out_portsel").add(optout);
> > > >    }
> > > > }
> > > > 
> > > > So I thought it scrolled thru input ports and output ports added them to an option list. And i thought that the "input" would be the last one scrolled thru and the output would be the last scrolled thru. And i could read midimessages from that  input and echo them to that output. 
> > > > 
> > > > Because so it seemed on win XP, not so much on win 7,8 and 10.
> > > > 
> > > > function onMIDIMessage (message) {
> > > >      playbackPort(message); 
> > > > }
> > > > 
> > > > Don't ask me how message get a value above because i am baffeled myself...
> > > > 
> > > > function playbackPort(message){
> > > >  var noteMessage = [message.data[0], message.data[1], message.data[2]];
> > > >  output.send(noteMessage); 
> > > > } 
> > > > 
> > > > So can anyone explain "what i try to do" and "what i fail todo"?
> > > > I really would like to make my rudimentary sequenser, but since i do not understand the logic of ports above i am stuck in undefined land when i try.
> > > > 
> > > > output.send(noteMessage) undefined...
> > > 
> > > The whole thing looping over the inputs seem weird to me "is there another way to make a listener on the port?", but that is how i find it done in examples.
> > > 
> > > https://gist.github.com/rudle/1007b15e84d70423fb59675182d3c4e0
> > > 
> > >     onMIDISuccess: function(midiAccess) {
> > >         midi = midiAccess;
> > > 
> > >         var inputs = midi.inputs.values();
> > >         // loop over all available inputs and listen for any MIDI input
> > >         for (var input = inputs.next(); input && !input.done; input = inputs.next()) {
> > >             // each time there is a midi message call the onMIDIMessage function
> > >             console.log("detected input: " + input.value.manufacturer + " " + input.value.name);
> > >             input.value.onmidimessage = ChordSpeller.onMIDIMessage;
> > >         }
> > >     },
> > 
> > If i just want to listen to one specified port? They are all doing this using next.
> > https://www.keithmcmillen.com/blog/making-music-in-the-browser-web-midi-api/
> 
> One would thought that something like
>   input = midi.inputs.get(0);
> Would get/set the port but no way Sir!
> No it some lollypopping, that came up with the syntax for that.

Suggestions for listening to one specified port?

 //for (input = inputs.next(); input && !input.done; input = inputs.next()) {
      // each time there is a midi message call the onMIDIMessage function
       input = midi.inputs.get(0);
       input.value.onmidimessage = onMIDIMessage;
    //}

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Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 14:52 -0700
  Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 15:11 -0700
    Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 15:16 -0700
      Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 16:00 -0700
        Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 16:03 -0700
  Re: Explain explicity what function does JJ <jj4public@vfemail.net> - 2018-08-16 06:47 +0700
    Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 21:43 -0700
      Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 23:13 -0700
        Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 23:18 -0700
          Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 23:23 -0700
    Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 23:44 -0700
      Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-15 23:49 -0700
        Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-16 01:26 -0700
          Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-17 01:49 -0700
            Re: Explain explicity what function does Flng Fck <nothanks@invalid.invalid> - 2018-08-17 16:02 +0200
              Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-17 11:29 -0700
                Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-17 11:33 -0700
                Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-17 11:36 -0700
              Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-19 11:22 -0700
                Re: Explain explicity what function does "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-08-19 22:52 +0200
                Re: Explain explicity what function does Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-08-20 00:15 +0200
                Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-19 15:21 -0700
                Re: Explain explicity what function does Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-08-20 00:27 +0200
                Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-19 15:43 -0700
                Re: Explain explicity what function does Jonas Thörnvall <jonas.thornvall@gmail.com> - 2018-08-19 15:48 -0700

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