Re: [linux-audio-dev] TAP-plugins reverb presets (was: TAP-plugins news)

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Subject: Re: [linux-audio-dev] TAP-plugins reverb presets (was: TAP-plugins news)
From: Matthias Nagorni (mana_AT_suse.de)
Date: Thu Mar 04 2004 - 13:27:42 EET

On Wed, 3 Mar 2004, Tom Szilagyi wrote:

> > * Fixed yet another crashing bug in TAP Reverberator (which appears
> > to be introduced upon fixing the previous crashing bug).
> > Hopefully no more crashing in my favorite plugin :)

This plugin looks very interesting. I am considering to modify the LADSPA
host module of AlsaModularSynth so that the presets would appear in a
combobox selector. However it's even more complicated than I thougt:
If I print out the parameter name, I get:

<LADSPA parameter name>
Presets

AfterBurn (Short) :0 1: AfterBurn (Long)
  Drum Chamber :2 3: Garage
Garage (Bright) :4 5: Gymnasium
          Gymnasium (Bright) :6 7: Gymnasium (Bright) - HD
    Hall (Small) :8 9: Hall (Medium)
         Hall (Large) :10 11: Hall (Large) - HD
    Plate (Small) :12 13: Plate (Medium)
        Plate (Large) :14 15: Plate (Large) - HD
                 Pulse Chamber :16 17: Pulse Chamber (Reverse)
                            Resonator (96 ms) :18 19: Resonator (152 ms)
Resonator (208 ms) :20 21: Room (Small)
Room (Medium) :22 23: Room (Large)
Room (Large) - HD :24 25: Slap Chamber
      Slap Chamber - HD :26 27: Slap Chamber (Bright)
Slap Chamber (Bright) - HD :28 29: Smooth Hall (Small)
Smooth Hall (Medium) :30 31: Smooth Hall (Large)
Smooth Hall (Large) - HD :32 33: Vocal Plate
 Vocal Plate - HD :34 35: Warble Chamber
        Warehouse :36 37: Warehouse - HD
</LADSPA parameter name>

If the format would be such that each preset would follow a number of the
form "n:", it would be much simpler that the alternating form where for even
numbers the number follows the preset name.

I would like to implement an algorithm for LADSPA plugins that would look if

a) The parameter name is INTEGER
b) Looks if it contains ("0:" and "1:") or ("0=" and "1=")

Given a) and b) it would split the name string, counting a variable
"count" and searching subsequently for substrings ("%d:", count). A
combobox will then replace the integer slider for those parameters.

Matthias 

-- 
Dr. Matthias Nagorni
SuSE Linux AG
Maxfeldstr. 5             phone: +49 911 74053375
D - 90409 Nuernberg       fax  : +49 911 74053483

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