VST parameter array

oddson · 14 Feb 2006

OK, so it's a little buggy but I think you've got it most of the way there. It would take me a while to figure out how it works to see why it doesn't. I'll try to get back to you within the hour unless someone smarter figures it out first... 🙂

(Are you sure you don't want to wait for the devs to support data chunks instead of going ahead with this?) 😉

EDIT

first discovery... the sample hold thing that you got from the bug post by rl... it in causing the first is last problem. If you add 1 to the index of the VST param it goes away... but I'm not sure why it's working that way....

rl may have been right that the bug is in the VST param and not in the loop as I speculated...

Second - you need to clear the array your using for the display if the lenght of the input string in longer than the array.. That will get rid of the problem of old text not clearing. It won't stop the problem of it being saved in the VST. You'll need some way to clear it too and I haven't got that figured out either...

rl · 14 Feb 2006

funny, I was working on the same idea.

It kinda works (as long you do not change the program number).

-> VSTstring.osm

oddson · 15 Feb 2006

From rl's schematic I'd say the first problem is you need to add a sample and hold between the float value calculation and the VST array...

Hey rl... did you know yours is cutting out duplicate characters? Was this intentional?

edit... if it wasn't, you need to trigger the string array from the loop because the Graph to Float doesn't trigger when the value doesn't change between graph points.. (bug?)

MyCo · 15 Feb 2006

I think I'm closer to the goal now: http://music-drive.com/VSTstring2.osm

Something is also missing, a trigger when the String is loaded completely, otherwise I can't trigger a "load from wave".

oddson · 15 Feb 2006

The string array has a done trigger... that should work.

If not, you could run it through a timer with fraction of a second delay to make sure the string is fully ready to go before the file read stuff is triggered.

I see you've gone mostly with rl's solution. But I can't see how you got around the deleting repeated characters. I see you've used the split instead of resetting the array, but I can't see how that would have got rid of the problem. 😕

MyCo · 15 Feb 2006

The clear trigger input can't be used, I don't know why, but this was the main problem. Now the array is not cleared, so I need a string split, to hide the previous array data, if there was a longer text before. It is not a good way, but it seems to work.

oddson · 15 Feb 2006

MyCo wrote: The clear trigger input can't be used...

How do you mean? rl was using it

MyCo wrote: ...Now the array is not cleared, so I need a string split, to hide the previous array data, if there was a longer text before...

Yeah I figured out what you were doing. Very clever but I'm not sure why you needed it... nor how it's fixing the multicharacter problem.

Assuming your solution is to fix the multiple character limitation, then what's wrong with this instead?

rl · 15 Feb 2006

Great guys, you've been working on the topic, while I was asleep. Now I'm back fresh and working again:

Thanks, Oddson, I didn't notice the cutting of duplicate characters; the solution in your illustration above (big red arrow) works perfectly.

At the top of the schematic there should be 0.5 added to the numerator of the divide by 128 operation to avoid rounding errors (by mistake it's 0 actually).

The only thing missing is to make it work when a VST program has switched. I'm suspecting the first loop to run and thus thrashing the VST Parameter Array's data. This needs more examiniation. I'm out until tomorrow - but I don't mind anyone to continue 😉

oddson · 15 Feb 2006

Oh, another problem, you can't click-edit the string. If you click into the middle of the text and add letters it just adds another copy of the last character. 🙁

edit - looked at it over and over and it seems to me the input string should be recalculated when it changes but the VST Array doesn't seem to notice the changes in the string. I can't figure it out 😕

MyCo · 16 Feb 2006

well, I don't know a way out... I tried a lot, but I don't get a better solution than that what we have now.