Re: [ecasound] LADSPA wierdness

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Subject: Re: [ecasound] LADSPA wierdness
From: S. Massy (theanaloguekid@tak.net.dhis.org)
Date: Wed Aug 01 2001 - 03:44:29 EEST

On Tue, 31 Jul 2001, Nolan Darilek <nolan_d@bigfoot.com> wrote:

> I'm not sure when, or why, some of my LADSPA plugins stopped
> working. Most notably, the metronome effect preset no longer seems to
> work. Doing the following:
>
> ecasound -i:null -pn:metronome
>
> produces:
>
> ****************************************************************************
> * ecasound v2.0.2 (C) 1997-2001 Kai Vehmanen *
> ****************************************************************************
> - [ Chainsetup/Adding chain operator "Pulse gate BPM" ] --------------------
> (audiofx_envelope_modulation) WARNING! Frequency must be greater than 0!
> Setting parameters: bpm = 120.00, on-time-msec = 10.00
> - [ Chainsetup/Adding chain operator "Lowpass filter" ] --------------------
> Setting parameters: cutoff-freq = 2000.00
> (audiofx_envelope_modulation) WARNING! Frequency must be greater than 0!
> bpm = 120.00
> - [ Chainsetup/Enabling audio inputs ] -------------------------------------
> (eca-audio-objects) Audio object "null", mode "read".
> (audio-io) Format: s16_le, channels 2, srate 44100, interleaved.
> - [ Chainsetup/Enabling audio outputs ] ------------------------------------
> (eca-audio-objects) Audio object "/dev/dsp", mode "write".
> (audio-io) Format: s16_le, channels 2, srate 44100, interleaved.
> - [ Engine/Init - mixmode "simple" ] ---------------------------------------
> (eca-main) Prefilling i/o buffers.
>
Yes, it does something similar when it's unable to find out the required
plugin; make sure that the correct ladspa path is specified in .ecasoundrc.
Perhaps a more explicative error message would be helpful here...
>
> And it used to work nicely as a metronome without recording. But now I
> get silence, despite the fact that sound works fine. The metronome
> preset looks like:
>
> metronome = -el:sine_fcac,880,1 -eemb:%bpm,10 -efl:2000
>
> And listplugins shows:
>
> Sine Oscillator (Freq:control, Amp:control) (1066/sine_fcac)
>
> But:
>
> ecasound -i:null -el:sine_fcac,880,1 -eemb:120.0,10 -efl:2000
>
> displays:
>
> ****************************************************************************
> * ecasound v2.0.2 (C) 1997-2001 Kai Vehmanen *
> ****************************************************************************
> ---
> ERROR: [ECA-CHAINSETUP] : "Invalid argument, unable to parse: '-el:sine_fcac,880,1'"
>
> Odd that the metronome preset works, but running by hand doesn't. This
> seems to happen with other LADSPA plugins as well; despite the fact
> that I have a LADSPA_PATH pointing to /usr/lib/ladspa, -el often
> complains as shown previously.
>
> Any ideas?
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