[LV2] proposed Feature : noSampleAccurateControls

[Robin Gareus]

Hi all,

I'd like to propose a new http://lv2plug.in/ns/lv2core/#optionalFeature
called "noSampleAccurateControls"

----
http://lv2plug.in/ns/lv2core/#noSampleAccurateControls

noSampleAccurateControls signifies that a plugin favors regular
block-sizes over sample-accurate control data.

The host should preferably call the plugin with the same blocksize
continuously.

Note that this does not guarantee a fixed block-size.
The process cycle may be split for other reasons (e.g. looping), and the
blocksize itself may change anytime.
----


Some plugin-hosts (e.g Ardour, Carla) split the plugin's run() on
automation events in order to pass control-port changes with sample
accuracy.

e.g jack-period: 64. event at sample 37 results in
   run(37); change_port_values(); run(27);

This is not always desirable, for example:
  a convolution plugin with internally smoothed gain control
will prefer to be called with the convolution kernel size.


thoughts and comments are welcome,

Cheers!
robin

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