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envelope, filter cutoff/resonance mapped to default modulators (with semi-random magic numbers)

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This commit is contained in:
Alex Birch
2019-06-23 19:40:36 +01:00
parent c8ae1b0e9a
commit bcf0d7dd7d
3 changed files with 104 additions and 33 deletions
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99
Source/FluidSynthModel.cpp
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@ -4,6 +4,7 @@
#include <iostream>
#include "FluidSynthModel.h"
#include "MidiConstants.h"
using namespace std;
@ -15,8 +16,8 @@ FluidSynthModel::FluidSynthModel(SharesParams& p)
currentSampleRate(44100),
initialised(false),
sfont_id(0),
channel(0),
mod(nullptr)
channel(0)/*,
mod(nullptr)*/
{}
@ -27,7 +28,7 @@ FluidSynthModel::~FluidSynthModel() {
delete_fluid_settings(settings);
// delete driver;
// delete settings;
delete_fluid_mod(mod);
// delete_fluid_mod(mod);
}
}
@ -63,37 +64,73 @@ void FluidSynthModel::initialise() {
// changePreset(128, 13);
float env_amount(12700.0f);
// mod = new_fluid_mod();
//
// // modulator's primary source controller and flags
// // fluid_mod_src:
// // https://github.com/FluidSynth/fluidsynth/blob/master/include/fluidsynth/mod.h#L61
// // fluid_mod_flags:
// // https://github.com/FluidSynth/fluidsynth/blob/master/include/fluidsynth/mod.h#L41
// // diagrams showing what negative and concave mean:
// // https://musescore.org/en/user/527826/blog/2016/05/23/volume-fluidsynth
// // fluid_gen_type:
// // https://github.com/FluidSynth/fluidsynth/blob/master/include/fluidsynth/gen.h#L36
// // https://github.com/FluidSynth/fluidsynth/blob/master/src/synth/fluid_gen.c#L27
// fluid_mod_set_source1(mod,
// FLUID_MOD_KEYPRESSURE,
// FLUID_MOD_CC |
// FLUID_MOD_POSITIVE |
// FLUID_MOD_UNIPOLAR |
// FLUID_MOD_CONCAVE);
// // modulator's secondary source controller and flags
// // MIDI CC 74
//// fluid_mod_set_source2(mod, 74, FLUID_MOD_CC);
// fluid_mod_set_source2(mod, 0, 0);
// // generator for filter cutoff
// fluid_mod_set_dest(mod, GEN_MODENVATTACK);
// fluid_mod_set_amount(mod, 13500.0f);
//
// fluid_synth_add_default_mod(synth, mod, FLUID_SYNTH_ADD);
fluid_mod_t *mod(new_fluid_mod());
fluid_mod_set_source1(mod,
static_cast<int>(SOUND_CTRL2), // MIDI CC 71 Timbre/Harmonic Intensity (filter resonance)
FLUID_MOD_CC
| FLUID_MOD_UNIPOLAR
| FLUID_MOD_CONCAVE
| FLUID_MOD_NEGATIVE);
fluid_mod_set_source2(mod, 0, 0);
fluid_mod_set_dest(mod, GEN_FILTERQ);
fluid_mod_set_amount(mod, FLUID_PEAK_ATTENUATION);
fluid_synth_add_default_mod(synth, mod, FLUID_SYNTH_ADD);
delete_fluid_mod(mod);
mod = new_fluid_mod();
fluid_mod_set_source1(mod,
static_cast<int>(SOUND_CTRL3), // MIDI CC 72 Release time
FLUID_MOD_CC
| FLUID_MOD_BIPOLAR
| FLUID_MOD_CONCAVE
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod, 0, 0);
fluid_mod_set_dest(mod, GEN_VOLENVRELEASE);
fluid_mod_set_amount(mod, env_amount);
fluid_synth_add_default_mod(synth, mod, FLUID_SYNTH_ADD);
delete_fluid_mod(mod);
mod = new_fluid_mod();
fluid_mod_set_source1(mod,
static_cast<int>(SOUND_CTRL4), // MIDI CC 73 Attack time
FLUID_MOD_CC
| FLUID_MOD_BIPOLAR
| FLUID_MOD_CONCAVE
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod, 0, 0);
fluid_mod_set_dest(mod, GEN_VOLENVATTACK);
fluid_mod_set_amount(mod, env_amount);
fluid_synth_add_default_mod(synth, mod, FLUID_SYNTH_ADD);
delete_fluid_mod(mod);
mod = new_fluid_mod();
fluid_mod_set_source1(mod,
static_cast<int>(SOUND_CTRL5), // MIDI CC 74 Brightness (cutoff frequency, FILTERFC)
FLUID_MOD_CC
| FLUID_MOD_SWITCH
| FLUID_MOD_UNIPOLAR
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod, 0, 0);
fluid_mod_set_dest(mod, GEN_FILTERFC);
fluid_mod_set_amount(mod, -2400.0f);
fluid_synth_add_default_mod(synth, mod, FLUID_SYNTH_ADD);
delete_fluid_mod(mod);
mod = new_fluid_mod();
fluid_mod_set_source1(mod,
static_cast<int>(SOUND_CTRL6), // MIDI CC 75 Decay Time
FLUID_MOD_CC
| FLUID_MOD_BIPOLAR
| FLUID_MOD_CONCAVE
| FLUID_MOD_POSITIVE);
fluid_mod_set_source2(mod, 0, 0);
fluid_mod_set_dest(mod, GEN_VOLENVDECAY);
fluid_mod_set_amount(mod, env_amount);
fluid_synth_add_default_mod(synth, mod, FLUID_SYNTH_ADD);
delete_fluid_mod(mod);
initialised = true;
}