Function to update a frame in C language

[josemaria.alkala]

I am not sure if what I am going to ask is possible.

I have been taking a look at writting plugins (http://www.vapoursynth.com/doc/api/vapoursynth.h.html#writing-plugins), but I don't want to create a whole plugin. I would like to know just the bare minimum to create a function that reads frames from a node and expose a node for the following filter.

I know how to read the frames and planes from a node. I know how to create a new frame, but how do I create a new node, with the frames to put it in a VSMap.

How can I do that? What options do I have?

[DJATOM]

If you're talking about writing "plugin in python script", i.e. not actually the binary plugin, but a script that changes data in frames or altering frame properties, there is core.std.ModifyFrame() (http://www.vapoursynth.com/doc/functions/modifyframe.html) for that purposes.

[josemaria.alkala]

From what I have read so far, it looks like I need to register the function in order to be able to use it. It is like

- registerFunction
- createFilter
- Init
- getFrame
- freeFrame

Do I also need to embed it in a plugin or I can use it straigh away?