Renoise api questions

Renoise Tool Development Beginners Lua API Sandbox
1

Hi,

I am confused about how I should access the pre- and also post-pannings and -volumes via lua. track:device(1) seems to be not always a “TrackVolPan” device, also the last one (track:device(#track.devices)) neither always is a “SendTrackVolPan” device…

What am I am doing wrong here?

1 Like
2

ok, found it with track.postfx_panning and track.postfx_volume etc.

Next question:

Is there an easy way to convert the CDATA saved in ParameterChunk into binary data?

… Is it just an base64 encoded string after the “<![CDATA[” ?

Ah yes.

3

Are there builtin zippy functions?

4

Nope!

1 Like
5

I am using this xml library: GitHub - manoelcampos/xml2lua: XML Parser written entirely in Lua that works for Lua 5.1+. Convert XML to and from Lua Tables 🌖💱

Trying to create such a structure:

<Devices>
  <Vst2Plugin />
  <Vst3Plugin />
  <Vst2Plugin />
</Devices>

What would be the table representation for this?
maybe the lib isn’t capable for this?

Try yourself:

local objects = {}
objects[#objects + 1] = {
        Vst2Plugin = {}
}
objects[#objects + 1] = {
        Vst3Plugin = {}
}
objects[#objects + 1] = {
        Vst2Plugin = {}
}
local xml2lua = require("xml2lua")
oprint(xml2lua.toXml({ Devices = objects }))

It gives me:

<Devices>
  <Vst2Plugin />
</Devices>
<Devices>
  <Vst3Plugin />
</Devices>
<Devices>
  <Vst2Plugin />
</Devices>
6

Not an answer (sorry), but is there a reason you’re not using Renoise’s native Document API?

7

It has no support for attributes AFAIK.

I am using now an ugly workaround:

xmlString = string.gsub(xmlString, "</Devices>([ \t\r\n]+)<Devices>", "")

I wonder if these mixed types of nodes actually break the XML standard… I tried now the opposite way, the library can back convert it, but then it’s not possible to keep the actual node order. Seems to be a flaw in the current dawproject definition. Do you think such mixed node types are standard in XML?

1 Like
8

Internal zippy functionality would be indeed very nice… Since Renoise itself certainly uses ZIP for multiple purposes. This would save io.exec calls to system os specific zippy tools…

9

Is there a way to save an instrument as xrni via api? Can’t find… aaah Application - Renoise Scripting

10

I don’t think there’s anything wrong with how Renoise uses XML. But the Document functions do appear to have limitations—which is understandable if a bit frustrating, as they’re not intended to be a full XML serializer library.