On Mon, Jun 07, 2010 at 05:13:25PM -0700, Kim Cascone wrote:

I had the [dssi~] external in the [postlude] library by Jamie Bullock but it didn't seem to be working so I compiled dssi~ after getting the liblo-dev and dssi-dev libs (it actually compiled which was a surprise)

but while I can now host a LADSPA I am not sure how to find out what message to send to any given LADSPA plug

anyone know the secret handshake as to what to send to dssi~ to get this
info?

The secret handshake is "info": Send an [info( message to the first inlet and watch what comes out of the first outlet. For "sine_faac" this would be:

print: port in audio 1 Frequency (Hz) 0 0.5 440 print: port in audio 2 Amplitude 1 7.19251e-31 1 print: port out audio 3 Output 1 7.19251e-31 0

More info becomes avaiable when you compare this to the output of "analyseplugin /usr/lib/ladspa/sine.so" (sine.so is where sine_faac lives on my machine):

Plugin Name: "Sine Oscillator (Freq:audio, Amp:control)" Plugin Label: "sine_faac" Plugin Unique ID: 1045 Maker: "Richard Furse (LADSPA example plugins)" Copyright: "None" 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: "Frequency (Hz)" input, audio, 0 to 0.5*srate, default 440, logarithmic "Amplitude" input, control, 0 to ..., default 1, logarithmic "Output" output, audio

The "Output" port on the [dssi~ sine_faac] object is an outlet~, the others are inlets.

If you create more instances of it, like the 6 sines in the help file with [dssi~ sine_faac 6], all ports get duplicated as many times as requested.

Control ports seem to be handled through "control #<portnum> ..." messages to the first inlet. For example a [dssi~ lpf] has this info:

print: port in control 1 Cutoff Frequency (Hz) 0 0.5 440 print: port in audio 1 Input 1 -1.80125e-05 0 print: port out audio 2 Output 1 2.21841e+32 0

You can control the Cutoff with "control #1 <f>" messages to the first inlet.

Maybe I should write another help file, but probably I've just forgotten that I already did it just as I had completely forgotten that I wrote one for [plugin~] - I still don't remember that. :)

Ciao

Frank Barknecht Do You RjDj.me? _ ______footils.org__