10 Apr
2011
10 Apr
'11
9:43 a.m.
[David Robillard]
On 07/04/11 01:00 PM, Tim Goetze wrote:
I'm afraid you generously overestimate the popularity of CAPS and the
AutoWah plugin in particular expecting this change to break "all sorts
of things". And you seem to underestimate the ability of your fellow
host application designers, as we shall see in a bit.
The new port for the AutoWah plugin will indeed
be appended to the
list of input ports; however, it will still precede the audio output,
adhering to the CAPS port order convention which puts inputs before
outputs.
This will horribly break all sorts of things. Do not do this! Admittedly,
slightly less so than rearranging control port indices would (which would
definitely break virtually everything), but still. You should just change the ID of the plugin and this
whole mess goes away. I
can't think of any reason to keep the ID and break the plugin rather than just
change the ID...
Adding a port doesn't break the *plugin*, it /might/ break *hosts*
that were designed around assumptions that aren't supported by the
interface specification.
An informal experiment shows that jack-rack 1.4.7 and ardour 2.8.11
both do exactly the right thing when a plugin referenced by a saved
session gains a port: they set the new port to its default value and
happily carry on working.
(Both also cope with the removal of a port. These are the only
publicly available hosts I have tested.)
Following your suggestion and changing the plugin's UniqueID would
break perfectly good saved session files in these and other properly
designed host applications - instead of *preventing* breakage, it'd
actually *cause* it.
If your particular LADSPA host design is incapable of handling a port
signature change gracefully, you could fix it - an endeavour I'll be
happy to help with, witness the discussed version symbol export - or
you can simply choose not to upgrade your copy of CAPS.
[Paul Coccoli]
And name it AutoFilter...like the Maxon AF-9 Auto
Filter...
Yeah, with the added filter mode switch this name makes sense.
Looking at the AF-9 it seems there's demand for a hi-pass mode as
well, so we might as well add that too.
Cheers, Tim