[LAD] Lv2 port replication [was Re: the role of lv2 extensions]

[james morris]

On 12/8/2009, "David Robillard" <dave at drobilla.net> wrote:

>On Wed, 2009-08-12 at 23:00 +0200, Fons Adriaensen wrote:
>> On Wed, Aug 12, 2009 at 09:46:58PM +0100, james morris wrote:
>>
>> > Say you have a LP filter plugin processing a stereo stream. It has one
>> > port for the cutoff and two ports for input, therefor two for output.
>> > What happens if you decide you want independent control over the cutoff
>> > for the two channels?
>>
>> That is the essential difference between a plugin being used in
>> a multichannel stream and one being used for polyphonic synthesis,
>> where the cutoff frequency could be a per-voice envelope.
>> Provided the plugin can do both, it is the *host* that has to make
>> clear what's required.
>
>++
>
>Though in the latter case, it's probably best to just instantiate the
>thing twice as hosts currently do (and will likely need to implement
>regardless).
>

Or ganging the control ports?