Realearn pagination - Switching page from Reascript Reaper action

[safran5020]

Hi @helgoboss ,

First, I want to thank you for the great and powerful tool you created.
I use Realearn (just updated to 2.17.2) with an Akai MidiMix mainly and an Akai MPK88.
I have setup pagination for the MidiMix (6 pages) and I would like o be able to switch to a specific page from reascript.
We can usually Get/Set any FX Parameter in reascript for any plugin but realearn's FX Parameter are not linked to any of the plugin's parameters even though there are 200 of them. Pagination makes use of Compartment parameters and those are not exposed to reascript API.

So how can I directly access a specific page from reascript instead of of having to scroll through all six pages with the MidiMix page next/previous buttons ?

Another reason for this is that MidiMix doesn't have text feedback so it is not possible to know exactly on which page you are, so having the ability to go to a specific page directly through a custom menu/toolbar (calling an action) would be great.

I hope I am explaining this clearly enough, English is not my native language.

Thanks

[helgoboss]

Hi! Actually, compartment parameter are exposed as FX parameter. But only for the main unit (the first unit in each ReaLearn FX instance). Do you have your mappings in an additional unit? safran5020 ***@***.***> schrieb am So., 12. Jan. 2025, 08:20:

…

Hi @helgoboss <https://github.com/helgoboss> , First, I want to thank you for the great and powerful tool you created. I use Realearn (just updated to 2.17.2) with an Akai MidiMix mainly and an Akai MPK88. I have setup pagination for the MidiMix (6 pages) and I would like o be able to switch to a specific page from reascript. We can usually Get/Set any FX Parameter in reascript for any plugin but realearn's FX Parameter are not linked to any of the plugin's parameters even though there are 200 of them. Pagination makes use of Compartment parameters and those are not exposed to reascript API. So how can I directly access a specific page from reascript instead of of having to scroll through all six pages with the MidiMix page next/previous buttons ? Another reason for this is that MidiMix doesn't have text feedback so it is not possible to know exactly on which page you are, so having the ability to go to a specific page directly using a keyboard shortcut (calling an action) would be great. I hope I am explaining this clearly enough, English is not my native language. Thanks — Reply to this email directly, view it on GitHub <#1403>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AADIZZIL2F23E4NJCATVEBD2KIJSPAVCNFSM6AAAAABVAX3RDKVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZXHAYTAMBQGY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[safran5020]

Actually, compartment parameter are exposed as FX parameter. But only
for the main unit

Hi Benjamin,
That's a great information and good to know. I suggest you add it in your reference guide if it is not already. I might have missed it.
Yes, my MidiMix controller is on the second unit while my MPK is on the first unit.

For testing purposes, I created another reaLearn instance and my page change reascript is working as expected. :-)

So by flipping the units order I will be good to go. Since there is no way of doing it from the actual instance, I will create a brand new instance and put the Midimix first and the MPK second and delete the original instance. Fortunately, the compartment presets will come very handy for this task. 👍

Thanks again for your quick reply and your great support. It is very appreciated !!

EDIT : After a little more thinking, I decided to go for multiple distinct instances for each controllers considering the limitation of access to compartment parameters using multiple units in one instance. In the end there are no differences in performance nor pros nor cons to use one single instance with multiple units as opposed to multiple single unit instances (from my understanding) while preserving a greater scripting ability.

[safran5020]

Hi @helgoboss ,

It looks like its not as simple as I thought it would be.
From reascript the value return by reaper.TrackFX_GetParam is a decimal value between 0 and 1
So if the number of page is 6 or 13, the value of page 4 will not be the same.
How can I deal with this.
Also, is there a way of retrieving the value of "Value count" of the compartment parameter.
I would need this value to use the reaper.TrackFX_SetParam as well

In other words how can I retreive an integer from a decimal value contained between 0 and 1 dependinf on the value of "Value count"

Thanks

[helgoboss]

Yes. When getting the parameter value, you need to multiply the normalized value (between 0.0 and 1.0) with VALUE_COUNT - 1. When writing it, you need to divide it by VALUE_COUNT - 1.

I think you can get the value count using https://www.reaper.fm/sdk/reascript/reascripthelp.html#TakeFX_GetParameterStepSizes. This gives you the step size. From that you can calculate the value count. Something like 1 / step_size.