Ok so here are some more 'issues'
I'm using the 'lpf' LADSPA plugin to use as a simple example for the
FOSS manual
it has one control which is the cutoff frequency
I instantiate the [plugin~ lpf] in a patch
the console window reports:
verbose( 1):plugin~: found plugin "lpf" in library "/usr/lib/ladspa/cmt.so"
verbose( 2):plugin~: open_plugin (x, "lpf", "/usr/lib/ladspa/cmt.so",
44100)\;
verbose( 1):plugin~: constructed plugin "Low Pass Filter (One Pole)"
successfully
verbose( 1):plugin~: plugin ports: audio 1/1 ctrl 1/0
verbose( 1):plugin~: plugin active
plugin~: "Low Pass Filter (One Pole)"
===============
first level of confusion
===============
occurs when a user is looking for the 'lpf' messages on the command line
using
analyseplugin lpf
they won't find it unless they read the console carefully and see the
LADSPA plug is actually called 'cmt.so'
and if they type in
analyseplugin cmt.so
they will have to scroll through the dozens of plugins inside 'cmt.so'
for the lpf plug
not a bug per se but there must be other plugs that come bundled like
the cmt.so which present a similar confusion...?
===================
the second level of confusion
===================
occurs when sending [plugin~ lpf] an [info] message in a patch
the [pd/print] object reports to the console:
b: port in control Cutoff Frequency (Hz) 0 0.5
b: port in audio Input 0 1
b: port out audio Output 0 1
leading the user to believe that the Cutoff Freq is controlled with a
float from [0 - 0.5]
instead of [0 - 0.5*srate] (n times the sample rate)
while 'analyseplugin cmt.so' reports:
Plugin Name: "Low Pass Filter (One Pole)"
Plugin Label: "lpf"
Plugin Unique ID: 1051
Maker: "CMT (http://www.ladspa.org/cmt, plugin by Richard W.E. Furse)"
Copyright: "(C)2000-2002, Richard W.E. Furse. GNU General Public Licence
Version 2 applies."
Must Run Real-Time: No
Has activate() Function: Yes
Has deativate() Function: No
Has run_adding() Function: No
Environment: Normal or Hard Real-Time
Ports: "Cutoff Frequency (Hz)" input, control, 0 to 0.5*srate,
default 440, logarithmic
"Input" input, audio
"Output" output, audio
as you can see the [pd/print] object is not reporting the correct
message to send for 'cutoff freq'
it SHOULD read:
b: port in control Cutoff Frequency (Hz) 0 0.5*srate
but is reporting
b: port in control Cutoff Frequency (Hz) 0 0.5
so it seems the [pd/print] object is not passing the '*' symbol
is this a known issue or can it be changed?
also, just as a data point the gf [print] object reports:
error: [print foo]: close-paren without open-paren
foo: port in audio Input 0 1
foo: port out audio Output 0 1
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