Windows VST setRange

Audio Plugins
1

Hi,

Total noob here so be kind :smiley:

I am trying to change the range of a parameter in a plugin based on the juce VST demo plugin. In DemoEditorComponent.cpp:

gainSlider->setRange (0.0, 1.0, 0.01);
delaySlider->setRange (0.0, 20, 1);

The gainSlider->setRange works as expected, but the delaySlider seems to ā€œtop outā€ at 1. The slider will not travel past the 1 mark in the VST GUI. I had a look at the definition of the setRange function, but found no clue. Any help is greatly appreciated.

2

VST parameters only have a range of 0 to 1 - if you want to display a different range on your slider, youā€™ll need to scale the numbers on the way in and out of the plugin.

1 Like
3

Thanks, Jules.

Giving it a shotā€¦

4

OK I guess Iā€™m having a bit of trouble understanding what the ā€œinā€ and ā€œoutā€ of the plugin means for the parameters.

I would guess that the getParameter function is the ā€œinputā€ of the parameter to my plugin, and the setParameter is where I send it back to the host?

If thatā€™s the case, then do I scale the parameter to my liking at the getParameter and reverse scale it at setParameter? Or do I have this all wrong?

Again, forgive my inexperience. Iā€™m trying to get this working, but havenā€™t gotten it quite right yet.

5

Erā€¦ no, you implement those methods in your class, so getParameter is called by the host when it wants to get one of your parameters, and vice-versa.