[gmpi] Re: Decision time: 8.1

I see parameters as a special class of inputs to a plugin. I realize that this is really a semantic distinction, but I think that this distinction will make it easier to understand the system, because it is familiar. So I see a side-chain input to a compressor as a port, while the compression ratio is a parameter. This doesn't mean that their operation is necessarily different. However, their presentation in the host is definitely different, at least for DAW-type hosts. Parameters are linked to automation. Ports are not.
If we don't make a distinction in the naming, we are still going to have to make a distinction in the port capabilities, since some are automatable and some are not. So I favor declaring it up front - parameters are for user-controllable inputs to the plugin, appropriate for automation in DAW-type hosts. Ports are for everything else. Under this definition, any output from a plugin is a port, not a parameter.
In a modular synth system, maybe the host will simply list the parameters and ports together, since in that environment, there is little distinction.

Steve Harris wrote:
On Wed, Aug 13, 2003 at 10:57:34 -0600, Mike Berry wrote:

I don't think we should use parameters for output from a plugin. Output should be a port, just like an audio output or control signal output. Parameters should only be plugin inputs which change the state of the plugin. 


How do you see the difference between a control signal i/o and a
parameter? I'm not saying they are the same, but they are in LADSPA and
that hasn't caused any real problems.

- Steve

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--
Mike Berry
Adobe Systems


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