Integrating a third party DLL file which takes inputs and produces an output (MT5 indicator)

I have a third party software producing DLL files.

These process "inputs" (MT5 buffers) and produce one or more outputs (required to be buffers for the indicator).

For example, if the inputs required for the DLL are, for the daily chart:

• RSI14
• Close
• CCI14
• ADX14
• High
• Low

These need to be read into the DLL, which will produce an output, or more than one outputs. The output(s) should become the buffer for the indicator.

To begin with, I would like a generic indicator which works on a DLL and inputs I will name and provide, and gives 4 output possibilities 0,1,2,3, which should form the main buffer of the indicator.

I would like to be able to customize the indicator for other DLL files which might have a different number of inputs, and potentially multiple output buffers.