Greetings :-)
I've been trying to work out how to use ladspa plugins. I'd like
to implement cc71 and cc74 (filter Q and Freq), and also to do
The Great Missing Midi Controller namely whole-of-channel distortion,
for which I have previously used cc87 controlling foverdrive_1196
Most of the relevant stuff seems to be in bindings/fluid_ladspa.h eg:
fluid_LADSPA_FxUnit_t* new_fluid_LADSPA_FxUnit(fluid_synth_t* synth);
int fluid_LADSPA_handle_start(
fluid_synth_t* synth, int ac, char** av, fluid_ostream_t out
);
void fluid_LADSPA_run(
fluid_LADSPA_FxUnit_t* Fx_unit,
fluid_real_t* left_buf[], fluid_real_t* right_buf[],
fluid_real_t* fx_left_buf[], fluid_real_t* fx_right_buf[]
);
fluid_LADSPA_Node_t* fluid_LADSPA_RetrieveNode(
fluid_LADSPA_FxUnit_t* FxUnit, char * Name
);
fluid_LADSPA_Node_t* fluid_LADSPA_CreateNode(
fluid_LADSPA_FxUnit_t* FxUnit, char * Name, int flags
);
void fluid_LADSPA_clear(fluid_LADSPA_FxUnit_t* FxUnit);
One, er, feature of new_fluid_LADSPA_FxUnit is that the plugin
will apply to all channels in the synth, which would make it
necessary to start a separate synth for every channel.
OTOH, I think I saw a comment somewhere about removing ladspa
dependencies from the synth object, so maybe this is changing ?
Is a 'Node' the plugin's control-parameter ? Eg: like the 3.0 in
play chord.wav ladspa foverdrive_1196 3.0
or
ecasound -i chord.wav -o alsa -el:foverdrive,3.0
?
There's doc/FluidSynth-LADSPA.pdf but that seems to be from 2002
and applies to the Iiwusynth...
Could someone give a newbie a tour of the state of ladspa ?
Is a hello-world example (at the C-API level) somewhere ?
Regards, Peter Billam
http://www.pjb.com.au p...@pjb.com.au (03) 6278 9410
"Follow the charge, not the particle." -- Richard Feynman
from The Theory of Positrons, Physical Review, 1949
_______________________________________________
fluid-dev mailing list
fluid-dev@nongnu.org
https://lists.nongnu.org/mailman/listinfo/fluid-dev
