Send CCs from JSFX

[Distressor]

This is probably a stupid question but this is my first JSFX project and i am not a coder.
I do have some experience with writing LUA scripts though.

How do i send fixed CCs with a slider from a JSFX plugin?
Let's say i want to send controller 18 and i have my slider set to the range 0 to 127?
All the guides and help files i could find on JSFX plugins always take some midi in to work.
How do i simply send it with the fader in the plugin?

[Aeolian]

In witti's plugin pack, check out "sfz_buddy"

Search the stash for "witti" or "js_plugins.zip"

[TonE]

You can use ReaControlMIDI (5 cc per instance) or https://github.com/gwatcha/midi-controller-vst

[Distressor]

Thanks guys. I'll check both of them out.

[Distressor]

ReaControlMIDI is a VST and therefor can't be altered to my needs i'm afraid.

"sfz_buddy" basically does what i want.
Unfortunately the code seems unnecessary complex for what i have in mind. Is this the way to do it?
I don't really understand what is going on. So far i was unlucky in altering the code to the few sliders i need.
If someone could come up with some easy code with just one slider working on CC 18 i can copy that code and exchange the values (CC number, slider description etc.). I'm fine with CC values and channels being hard coded into the plug.

Thanks

[Tale]

Something like this you mean?

desc:Send CC#18

slider1:0<0,127,1>Value

@init

ch = 0; // 0..15
cc = 18;

old_value = -1;

@slider

value = min(max(0, slider1|0), 127);

@block

value != old_value ? (
  old_value = value;
  midisend(0, 0xB0 | ch, cc, value);
);

[Distressor]

Originally Posted by Tale

Something like this you mean?

desc:Send CC#18

slider1:0<0,127,1>Value

@init

ch = 0; // 0..15
cc = 18;

old_value = -1;

@slider

value = min(max(0, slider1|0), 127);

@block

value != old_value ? (
  old_value = value;
  midisend(0, 0xB0 | ch, cc, value);
);

Awesome. Now i understand it much better.
I build my JSFX with 25 of them. Works great.

Thanks a lot.

[Distressor]

If i'd like to use sysex instead of CCs how would the code change?

[jrk]

That would depend on what (hardware) you're wanting to send sysex to.

(I guess this'll be some kind of older kit that doesn't do CC, but does do sysex?)

but it's going to be something like:

//start building sysex message 
     outbuf[0] = 0xF0;
     outbuf[1] = manufacturer_identifier;

then you need to put the rest of your sysex message in the buffer*

terminate it, and send it

     outbuf[i] = 0xF7;  // finish sysex    
     midisend_buf(0,outbuf,i+1);

*the devil's in the specific detail... there's a pretty good article here:
http://www.muzines.co.uk/articles/ev...exclusive/5680

[MST]

Originally Posted by Tale

Something like this you mean?

desc:Send CC#18

slider1:0<0,127,1>Value

@init

ch = 0; // 0..15
cc = 18;

old_value = -1;

@slider

value = min(max(0, slider1|0), 127);

@block

value != old_value ? (
  old_value = value;
  midisend(0, 0xB0 | ch, cc, value);
);

Thank you !!
I tried this, and I now can send any cc with a slider, but after some experimenting to make more cc sliders (like Distressor managed to do, I know very little about programming) I got stuck.
Could you (or someone) give an example with an extra slider, controlling, for instance, cc19 ?
Then I expect I'll be able to make as many cc sliders as needed.

[Tale]

Originally Posted by MST

Could you (or someone) give an example with an extra slider, controlling, for instance, cc19 ?
Then I expect I'll be able to make as many cc sliders as needed.

Yeah, sure! Note that for two sliders I would do it this way, but for e.g. 10 sliders I would probably do it differently (i.e. I would try to combine the repetitive code in both @slider and @block in a loop). However, that would be more complicated... I think this is easier to understand. For now anyway.

desc:Send CC#18 / CC#19

slider1:0<0,127,1>CC#18
slider2:0<0,127,1>CC#19

@init

ch = 0; // 0..15

// CC#18
cc1 = 18;
old_value1 = -1;

// CC#19
cc2 = 19;
old_value2 = -1;

@slider

// CC#18
value1 = min(max(0, slider1|0), 127);

// CC#19
value2 = min(max(0, slider2|0), 127);

@block

// CC#18
value1 != old_value1 ? (
  old_value1 = value1;
  midisend(0, 0xB0 | ch, cc1, value1);
);

// CC#19
value2 != old_value2 ? (
  old_value2 = value2;
  midisend(0, 0xB0 | ch, cc2, value2);
);

[MST]

Awesome, it works, and I can do with it what I want, thank you !!

Yes, I've got a lot to learn, but I don't mind writing overcomplicated codes when I know I'll get a good result.
I might drop by again with a question about parameter feedback, but at the moment I'm happy, and I'll first indulge myself with some study before I dare to ask more.