Custom midi script doesn't work right with my new interface

[Tyrannocaster]

Several years ago, someone (I *think* it was Lokasenna) kindly made me a custom script action which I put in my toolbar; when I create a new track and click the action's icon, the track is armed and the input is set to midi with the correct monitoring status. Now, with my new audio interface (which is also the new midi interface), it works except for the midi assignment, which doesn't work. I have to change the input to the correct device manually. I have looked at the .lua script but I don't see any mention of a specific midi device and I can't figure out how to edit it to get it working.

Hoping someone can chime in here.

Here is the script:

-- Set the selected track(s) to MIDI input

local midi_channel = 0

-- Get the number of selected tracks
local num_tracks = reaper.CountSelectedTracks()

-- If we don't have any selected tracks, abort the script
if num_tracks == 0 then
return
end

-- Keeps Reaper's undo history tidy
reaper.Undo_BeginBlock()

-- The selected tracks are numbered from 0
for i = 0, num_tracks - 1 do

-- Get the track's info
local track = reaper.GetSelectedTrack(0, i)

--[[

reaper.SetMediaTrackInfo_Value( tr, parmname, newvalue )

I_RECINPUT : int * : record input.

<0 = no input,
0..n = mono hardware input,
512+n = rearoute input,
1024 set for stereo input pair.
4096 set for MIDI input,
if set then low 5 bits represent channel (0=all, 1-16=only chan),
then next 5 bits represent physical input (63=all, 62=VKB)
]]--


reaper.SetMediaTrackInfo_Value(track, "I_RECINPUT", 4096 + 32 + midi_channel)

end

reaper.Undo_EndBlock("Set the selected track(s) to MIDI input", 1)

[lunker]

--[[

reaper.SetMediaTrackInfo_Value( tr, parmname, newvalue )

I_RECINPUT : int * : record input.

<0 = no input,
0..n = mono hardware input,
512+n = rearoute input,
1024 set for stereo input pair.
4096 set for MIDI input,
if set then low 5 bits represent channel (0=all, 1-16=only chan),
then next 5 bits represent physical input (63=all, 62=VKB)
]]--


reaper.SetMediaTrackInfo_Value(track, "I_RECINPUT", 4096 + 32 + midi_channel)

Looks like it is hard-coded to use MIDI device 32, which must be for your old MIDI interface.

I'm not good enough at this to know how to tell how to identify which number to use for your new MIDI interface.

Someone smarter may have an answer soon. If not, you can always plug in different numbers from 0 to 61, and see which one works for your new interface:

[jrk]

Originally Posted by lunker

reaper.SetMediaTrackInfo_Value(track, "I_RECINPUT", 4096 + 32 + midi_channel)
[/code]

Looks like it is hard-coded to use MIDI device 32, which must be for your old MIDI interface.

Hang on... That's a bitfield isn't it? If the low 5 bits are channel, then the "32" is physical input 1 isn't it? And 64 -> input 2, 96 ->3 etc? Or is my maths letting me down?

i.e. input << 5 (or input *32, if you like) I dunno if they're zero indexed I guess there's an input '0'?

[lunker]

Yes, you’re right. I didn’t fully think my reply through. Shame and embarrassment!