I don't think it is a corner case if we can show a host (Premiere)
which needs it 100% of the time for all plugins, custom UI or not.
The issue is not just for parsing the string that is typed. Hot text
controls in Premiere are also draggable. For that, I need to know what
the natural unit of increment is. Lets say that I have a parameter that
is frequency in linear units in a float. In the plugin's custom UI, it
is free to put a log-based control onto that parameter. But the host has
no idea. So how does the host pick a useful unit for incrementing and
decrementing the value? This is exacerbated by the normalization in VST,
but just getting rid of the normalization does not fix the problem.
Mike
On Thu, Nov 04, 2004 at 11:35:58PM -0800, Tim Hockin wrote:
On Fri, Nov 05, 2004 at 05:25:37AM +0000, Steve Harris wrote:
Yes, but I thought that the lack of hot text for VSTs is due to the paramter normalisation that happens in VST, rather than the lack of a parse input. All LADSPA plugins have hot text in hosts that support it, and there is no textual form parse function.
Devil's advocate, since I have no strong position.
How do you handle an input parameter that is non-linear? That is, the value you want the user to see is a function of the parameter input.
We have an entire mechanism to deal with exactly that case: Prameter Pre-Processors.
Often not even that will be neccesary. The common case (IME) is that you have a slider whos position is non-linear with the value it sends to the parameter (eg gain in dB's), but that mapping is done by the UI, the spinbutton or text control is still expressed in dB's as thats the natural unit of the control.
- Steve
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