[gmpi] Re: 3.12 Control I/O

> I'm beginning to think that these controller plugins don't just use a 
 parameter-out, since there is so much metadata and routing that needs to
 be handled.

Hi Tim,

Well, to me control-out and parameter-in are opposit sides of the same coin.
It's natural to connect the two.  They should use the same mechanism
(timestamped events).

Both generally have the same meta-data (datatype, hi/lo range, etc).

I guess I'm used to a modular approach, where you can connect any output
parameter to any input (of the same datatype).  I like the flexibility that
gives.

Best Regards,
Jeff

If every event message contained both the set-to value and the full-range value, then whatever entity receives the message could handle it however it wants to, i.s. untransformed literal value as provided, or normalized. No host intervention or other special signalling to mess with (==get wrong).

Examples (please forgive horrible syntax):

- Set Volume in percent:

              msgStructure {
                targetParam = "master/volume";
                value = 56.789f;
                fullRange = 100.0f;
              }

- Set Volume as 7-bit MIDI controller:

              msgStructure {
                targetParam = "master/volume";
                value = 57 (int);
                fullRange = 127 (int);
                // Normalized value is 57/127 if you want it
              }

Obviously this would only work for continuous-controller style parameters, not strings, enums, bools, blobs, etc.

-- Chris G.

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