[pulseaudio-discuss] Ladspa Plate2x2 plugin on pulseaudio‏

[Paolo La Francesca]

So there's no way at the moment to make pulseaudio work with any
ladspa plugin? There are other pulgins provided by ladspa doing
something similar, one is called plate_1423, another C* Plate...
There also are lots of people on the internet saying they are able to
use a ladspa equalizer (it didn't work for me).

2009/8/7, Tanu Kaskinen <tanuk at iki.fi>:
> pe, 2009-08-07 kello 09:45 +0200, Paolo La Francesca kirjoitti:
>> Hello world, sorry for my last blank message.. Maybe I have some
>> problems with my e-mail client.
>> Anyway, I've recently installed pulseaudio-0.9.15 for the first time
>> on my Debian Sid kernel 2.6.30-1-amd64 and I'm very satisfied of it
>> :).
>>
>> I'm now trying to set a reverb through pulseaudio on gnome's rhythmbox.
>> According to Aqualung (on which it is working fine) there's a Ladspa
>> plugin in "/usr/lib/ladspa/caps.so" labeled Plate2x2 that should make
>> what I want.
>>
>> I added this line to my ~/.pulse/default.pa
>> "load-module module-ladspa-sink sink_name=ladspa_out
>> master=alsa_output.pci_10de_59_sound_card_0 plugin=caps label=Plate2x2
>> control=0.700,0.400,0.300,0.500"
>>
>> But when I try to start pulseaudio it fails:
>> E: module-ladspa-sink.c: Found audio input port on plugin we cannot
>> handle: in:l
>> E: module.c: Failed to load module "module-ladspa-sink" (argument:
>> "sink_name=ladspa_out master=alsa_output.pci_10de_59_sound_card_0
>> plugin=caps label=Plate2x2 control=0.700,0.400,0.300,0.500"):
>> initialization failed.
>> E: main.c: Module load failed.
>> E: main.c: Inizializzazione del demone non riuscita
>>
>> Then, pulseaudio does not start.
>> Is there something I'm wrong or, of course.. is there an alternative
>> solution?
>
> Pulseaudio isn't very smart with the ladspa plugins. Right now the
> module can only deal with plugins that provide one audio input port
> named "Input" and one output named "Output". That error comes from the
> unrecognized name, but since the plugin works with stereo signals,
> changing the name alone won't help. Patches welcome!
>
> --
> Tanu Kaskinen
>
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