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LFO.h
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LFO.h
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/*
* SurgeXT for VCV Rack - a Surge Synth Team product
*
* A set of modules expressing Surge XT into the VCV Rack Module Ecosystem
*
* Copyright 2019 - 2024, Various authors, as described in the github
* transaction log.
*
* Surge XT for VCV Rack is released under the GNU General Public License
* 3.0 or later (GPL-3.0-or-later). A copy of the license is in this
* repository in the file "LICENSE" or at:
*
* or at https://www.gnu.org/licenses/gpl-3.0.en.html
*
* All source for Surge XT for VCV Rack is available at
* https://github.com/surge-synthesizer/surge-rack/
*/
#ifndef SURGE_XT_RACK_SRC_LFO_H
#define SURGE_XT_RACK_SRC_LFO_H
#include "SurgeXT.h"
#include "XTModule.h"
#include "rack.hpp"
#include <cstring>
#include "DebugHelpers.h"
#include "globals.h"
#include "dsp/modulators/LFOModulationSource.h"
#include <array>
#include <memory>
namespace sst::surgext_rack::lfo
{
struct LFO : modules::XTModule
{
static constexpr int n_lfo_params{10};
static constexpr int n_mod_inputs{4};
static constexpr int n_steps{16};
enum TrigTypes
{
DEFAULT,
END_OF_ENV,
END_OF_ENV_SEGMENT,
STEP_F,
STEP_A
};
enum ParamIds
{
RATE,
PHASE,
DEFORM,
AMPLITUDE,
E_DELAY,
E_ATTACK,
E_HOLD,
E_DECAY,
E_SUSTAIN,
E_RELEASE,
SHAPE,
UNIPOLAR,
LFO_MOD_PARAM_0,
UNUSED_PARAM_DEPRECATED = LFO_MOD_PARAM_0 + n_lfo_params * n_mod_inputs,
DEFORM_TYPE,
WHICH_TEMPOSYNC,
RANDOM_PHASE,
TRIGA_TYPE,
TRIGB_TYPE,
STEP_SEQUENCER_STEP_0,
STEP_SEQUENCER_TRIGGER_0 = STEP_SEQUENCER_STEP_0 + n_steps,
STEP_SEQUENCER_START = STEP_SEQUENCER_TRIGGER_0 + n_steps,
STEP_SEQUENCER_END,
SCALE_RAW_OUTPUTS,
NO_TRIG_POLY,
BROADCAST_TRIG_TO_POLY,
UNTRIGGERED_ENV_NONZERO,
RANDOMIZATION_CHANGES_SHAPES,
NUM_PARAMS
};
enum InputIds
{
INPUT_GATE,
INPUT_GATE_ENVONLY,
INPUT_CLOCK_RATE,
INPUT_PHASE_DIRECT,
LFO_MOD_INPUT,
NUM_INPUTS = LFO_MOD_INPUT + n_mod_inputs,
};
enum OutputIds
{
OUTPUT_MIX,
OUTPUT_WAVE,
OUTPUT_ENV,
OUTPUT_TRIGPHASE,
OUTPUT_TRIGA,
OUTPUT_TRIGB,
NUM_OUTPUTS
};
enum LightIds
{
NUM_LIGHTS
};
LFO() : XTModule()
{
config(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS, NUM_LIGHTS);
setupSurge();
}
enum TrigBroadcastMode
{
FOLLOW_TRIG_POLY,
TAKE_CHANNEL_0,
};
std::string getName() override { return "LFO"; }
std::array<std::unique_ptr<LFOModulationSource>, MAX_POLY> surge_lfo;
std::unique_ptr<StepSequencerStorage> surge_ss;
std::unique_ptr<MSEGStorage> surge_ms;
std::unique_ptr<FormulaModulatorStorage> surge_fs;
LFOStorage *lfostorage;
LFOStorage *lfostorageDisplay;
std::atomic<bool> retriggerFromZero{false};
std::atomic<float> onepoleFactor{0.75f};
modules::ModulationAssistant<LFO, n_lfo_params, RATE, n_mod_inputs, LFO_MOD_INPUT> modAssist;
rack::simd::float_4 output0[3][4], output1[3][4];
std::map<int, size_t> paramOffsetByID;
void setupSurge()
{
setupSurgeCommon(NUM_PARAMS, false, false);
for (int i = 0; i < MAX_POLY; ++i)
surge_lfo[i] = std::make_unique<LFOModulationSource>();
surge_ss = std::make_unique<StepSequencerStorage>();
surge_ss->loop_start = 0;
surge_ss->loop_end = n_steps - 1;
surge_ms = std::make_unique<MSEGStorage>();
surge_fs = std::make_unique<FormulaModulatorStorage>();
lfostorage = &(storage->getPatch().scene[0].lfo[0]);
lfostorage->delay.deactivated = false;
lfostorage->trigmode.val.i = lm_keytrigger;
lfostorageDisplay = &(storage->getPatch().scene[0].lfo[1]);
lfostorageDisplay->delay.deactivated = false;
lfostorageDisplay->trigmode.val.i = lm_keytrigger;
paramOffsetByID[RATE] = 0;
paramOffsetByID[SHAPE] = 1;
paramOffsetByID[PHASE] = 2;
paramOffsetByID[AMPLITUDE] = 3;
paramOffsetByID[DEFORM] = 4;
// skip trigmode
paramOffsetByID[UNIPOLAR] = 6;
paramOffsetByID[E_DELAY] = 7;
paramOffsetByID[E_HOLD] = 8; // yeah the storage object is mis-ordered
paramOffsetByID[E_ATTACK] = 9;
paramOffsetByID[E_DECAY] = 10;
paramOffsetByID[E_SUSTAIN] = 11;
paramOffsetByID[E_RELEASE] = 12;
auto *par0 = &(lfostorage->rate);
for (int p = RATE; p < LFO_MOD_PARAM_0; ++p)
{
auto *par = &par0[paramOffsetByID[p]];
float maxv = 1.f;
if (p == SHAPE)
{
maxv = Parameter::intScaledToFloat(lt_stepseq, par->val_max.i, par->val_min.i);
}
auto pq = configParam<modules::SurgeParameterParamQuantity>(
p, 0, maxv, par->get_default_value_f01(), par->get_name());
if (p == SHAPE)
{
pq->customRandomize = [this](auto pq) {
auto rcs = params[RANDOMIZATION_CHANGES_SHAPES].getValue() > 0.5;
if (!rcs)
return;
auto *par = &lfostorage->rate + paramOffsetByID[pq->paramId];
auto cv = Parameter::intUnscaledFromFloat(pq->getValue(), par->val_max.i,
par->val_min.i);
if (cv >= lt_stepseq)
{
return;
}
auto ncv = rand() % (lt_stepseq);
auto v01 = Parameter::intScaledToFloat(ncv, par->val_max.i, par->val_min.i);
pq->setValue(v01);
};
}
}
for (int p = LFO_MOD_PARAM_0; p < UNUSED_PARAM_DEPRECATED; ++p)
{
auto name =
std::string("Mod ") + std::to_string((p - LFO_MOD_PARAM_0) % n_mod_inputs + 1);
configParamNoRand<modules::SurgeParameterModulationQuantity>(p, -1, 1, 0, name)
->baseName = name;
}
configParamNoRand(UNUSED_PARAM_DEPRECATED, 0, 1, 0, "Unused/Deprecated");
configParamNoRand(DEFORM_TYPE, 0, 4, 0, "Deform Type");
configParamNoRand(WHICH_TEMPOSYNC, 0, 3, 1, "Which Temposync");
configParamNoRand(RANDOM_PHASE, 0, 1, 0, "Randomize Initial Phase");
configParamNoRand(TRIGA_TYPE, 0, 3, DEFAULT, "Trigger A");
configParamNoRand(TRIGB_TYPE, 0, 3, DEFAULT, "Trigger B");
for (int i = 0; i < n_steps; ++i)
{
configParam(STEP_SEQUENCER_STEP_0 + i, -1, 1, 0,
std::string("Step ") + std::to_string(i + 1));
params[STEP_SEQUENCER_STEP_0 + i].setValue(1.f * i / (n_steps - 1));
configSwitch(STEP_SEQUENCER_TRIGGER_0 + i, 0, 3, 0,
std::string("Step Trigger ") + std::to_string(i + 1),
{"Off", "A", "B", "A and B"});
}
configParamNoRand(STEP_SEQUENCER_START, 0, n_steps - 1, 0, "First Loop Point")
->snapEnabled = true;
configParamNoRand(STEP_SEQUENCER_END, 1, n_steps, n_steps, "Last Loop Point")->snapEnabled =
true;
configParamNoRand(SCALE_RAW_OUTPUTS, 0, 1, 1, "Scale raw outputs by amp?");
configParamNoRand(NO_TRIG_POLY, 1, 16, 1, "Scale raw outputs by amp?")->snapEnabled = true;
configParamNoRand(BROADCAST_TRIG_TO_POLY, FOLLOW_TRIG_POLY, TAKE_CHANNEL_0,
FOLLOW_TRIG_POLY, "Trigger Broadcast Mode");
configOnOff(UNTRIGGERED_ENV_NONZERO, 0, "Without connected trigger, output Envelope?");
configOnOff(RANDOMIZATION_CHANGES_SHAPES, 1, "Randomize changes curve shape outside Step?")
->randomizeEnabled = false;
for (int i = 0; i < MAX_POLY; ++i)
{
surge_lfo[i]->assign(storage.get(), lfostorage, storage->getPatch().scenedata[0],
nullptr, surge_ss.get(), surge_ms.get(), surge_fs.get());
gateInputHigh[i] = false;
gateEnvInputHigh[i] = false;
anyGateInputHigh[i] = false;
prevAnyGateInputHigh[i] = false;
gateInputTriggered[i] = false;
gateEnvInputTriggered[i] = false;
priorIntPhase[i] = -1;
endPhaseCountdown[i] = 0;
trigABCountdown[0][i] = 0;
trigABCountdown[1][i] = 0;
surge_lfo[i]->envRetrigMode = LFOModulationSource::FROM_LAST;
}
setupStorageRanges(&(lfostorage->rate), &(lfostorage->release));
for (int s = 0; s < 3; ++s)
{
for (int i = 0; i < 4; ++i)
{
output0[s][i] = rack::simd::float_4::zero();
output1[s][i] = rack::simd::float_4::zero();
}
}
configInput(INPUT_GATE, "Gate for Full LFO (env + wave)");
configInput(INPUT_GATE_ENVONLY, "Gate for Envelope Only");
configInput(INPUT_CLOCK_RATE, "Clock");
configInput(INPUT_PHASE_DIRECT, "Direct Phase (0-10v for 0-1 Phase)");
for (int i = 0; i < n_mod_inputs; ++i)
configInput(LFO_MOD_INPUT + i, std::string("Mod ") + std::to_string(i + 1));
configOutput(OUTPUT_MIX, "LFO Wave x Envelope Generator");
configOutput(OUTPUT_WAVE, "LFO Wave");
configOutput(OUTPUT_ENV, "Envelope Generator");
configOutput(OUTPUT_TRIGPHASE, "Trigger on End of Wave Cycle");
configOutput(OUTPUT_TRIGA, "Trigger on end of Envelope Stage or Step Trigger A");
configOutput(OUTPUT_TRIGB, "Trigger on end of Envelope or Step Trigger B");
modAssist.initialize(this);
snapCalculatedNames();
}
Parameter *surgeDisplayParameterForParamId(int paramId) override
{
if (paramOffsetByID.find(paramId) == paramOffsetByID.end())
{
std::cout << "ERROR: NOT FOUND PARAM ID " << paramId << std::endl;
return nullptr;
}
auto po = paramOffsetByID[paramId];
auto *par0 = &(lfostorage->rate);
auto *par = &par0[po];
return par;
}
Parameter *surgeDisplayParameterForModulatorParamId(int modParamId) override
{
auto paramId = paramModulatedBy(modParamId);
if (paramId < RATE || paramId >= RATE + n_lfo_params)
return nullptr;
auto po = paramOffsetByID[paramId];
auto *par0 = &(lfostorage->rate);
auto *par = &par0[po];
return par;
}
static int paramModulatedBy(int modIndex)
{
int offset = modIndex - LFO_MOD_PARAM_0;
if (offset >= n_mod_inputs * (n_lfo_params + 1) || offset < 0)
return -1;
return offset / n_mod_inputs;
}
float modulationDisplayValue(int paramId) override
{
int idx = paramId - RATE;
if (idx < 0 || idx >= n_lfo_params + 1)
return 0;
return modAssist.animValues[idx];
}
static int modulatorIndexFor(int baseParam, int modulator)
{
int offset = baseParam - RATE;
return LFO_MOD_PARAM_0 + offset * n_mod_inputs + modulator;
}
int polyChannelCount() { return std::max(1, lastNChan); }
bool isBipolar(int paramId) override
{
if (paramId == DEFORM)
{
return true;
}
return false;
}
int lastStep = BLOCK_SIZE;
int lastNChan = -1;
bool firstProcess{true};
rack::dsp::SchmittTrigger envGateTrigger[MAX_POLY], envGateTriggerEnvOnly[MAX_POLY];
bool gateInputHigh[MAX_POLY]{}, gateEnvInputHigh[MAX_POLY]{}, anyGateInputHigh[MAX_POLY]{};
bool prevAnyGateInputHigh[MAX_POLY]{};
bool gateInputTriggered[MAX_POLY]{}, gateEnvInputTriggered[MAX_POLY]{};
int priorIntPhase[MAX_POLY], endPhaseCountdown[MAX_POLY], priorEnvStage[MAX_POLY];
int trigABCountdown[2][MAX_POLY];
typedef modules::ClockProcessor<LFO> clockProcessor_t;
clockProcessor_t clockProc;
void activateTempoSync()
{
auto wts = (int)std::round(paramQuantities[LFO::WHICH_TEMPOSYNC]->getValue());
auto wtR = (bool)(wts & 1);
auto wtE = (bool)(wts & 2);
for (auto ls : {lfostorage, lfostorageDisplay})
{
ls->rate.temposync = wtR;
auto *par0 = &(ls->rate);
for (int p = E_DELAY; p < LFO_MOD_PARAM_0; ++p)
{
auto *par = &par0[paramOffsetByID[p]];
if (par->can_temposync())
par->temposync = wtE;
}
}
}
void deactivateTempoSync()
{
for (auto ls : {lfostorage, lfostorageDisplay})
{
auto *par0 = &(ls->rate);
for (int p = RATE; p < LFO_MOD_PARAM_0; ++p)
{
auto *par = &par0[paramOffsetByID[p]];
if (par->can_temposync())
par->temposync = false;
}
}
}
void process(const typename rack::Module::ProcessArgs &args) override
{
int userPoly = (int)std::round(params[NO_TRIG_POLY].getValue());
auto tt = (LFO::TrigBroadcastMode)std::round(params[BROADCAST_TRIG_TO_POLY].getValue());
auto untrigEnvMult = params[UNTRIGGERED_ENV_NONZERO].getValue() > 0.5 ? 1.f : 0.f;
int nChan{1};
if (tt == FOLLOW_TRIG_POLY &&
(inputs[INPUT_GATE].isConnected() || inputs[INPUT_GATE_ENVONLY].isConnected()))
{
nChan = std::max(
{1, inputs[INPUT_GATE].getChannels(), inputs[INPUT_GATE_ENVONLY].getChannels()});
}
else
{
nChan = userPoly;
}
outputs[OUTPUT_MIX].setChannels(nChan);
outputs[OUTPUT_ENV].setChannels(nChan);
outputs[OUTPUT_WAVE].setChannels(nChan);
if (nChan != lastNChan)
{
firstProcess = true;
lastNChan = nChan;
for (int i = nChan; i < MAX_POLY; ++i)
lastStep = BLOCK_SIZE;
}
if (tt == FOLLOW_TRIG_POLY &&
(inputs[INPUT_GATE].isConnected() || inputs[INPUT_GATE_ENVONLY].isConnected()))
{
for (int c = 0; c < nChan; ++c)
{
if (inputs[INPUT_GATE].isConnected() &&
envGateTrigger[c].process(inputs[INPUT_GATE].getVoltage(c)))
gateInputTriggered[c] = true;
gateInputHigh[c] = inputs[INPUT_GATE].getVoltage(c) > 2;
if (inputs[INPUT_GATE_ENVONLY].isConnected() &&
envGateTriggerEnvOnly[c].process(inputs[INPUT_GATE_ENVONLY].getVoltage(c)))
gateEnvInputTriggered[c] = true;
gateEnvInputHigh[c] = inputs[INPUT_GATE_ENVONLY].getVoltage(c) > 2;
anyGateInputHigh[c] = gateEnvInputHigh[c] || gateInputHigh[c];
}
}
else
{
// broadcast 0 to the rest
if (inputs[INPUT_GATE].isConnected() &&
envGateTrigger[0].process(inputs[INPUT_GATE].getVoltage(0)))
gateInputTriggered[0] = true;
gateInputHigh[0] = inputs[INPUT_GATE].getVoltage(0) > 2;
if (inputs[INPUT_GATE_ENVONLY].isConnected() &&
envGateTriggerEnvOnly[0].process(inputs[INPUT_GATE_ENVONLY].getVoltage(0)))
gateEnvInputTriggered[0] = true;
gateEnvInputHigh[0] = inputs[INPUT_GATE].getVoltage(0) > 2;
anyGateInputHigh[0] = gateEnvInputHigh[0] || gateInputHigh[0];
for (int c = 1; c < nChan; ++c)
{
gateInputTriggered[c] = gateInputTriggered[0];
gateEnvInputTriggered[c] = gateEnvInputTriggered[0];
gateInputHigh[c] = gateInputHigh[0];
gateEnvInputHigh[c] = gateEnvInputHigh[0];
anyGateInputHigh[c] = anyGateInputHigh[0];
}
}
if (inputs[INPUT_CLOCK_RATE].isConnected())
clockProc.process(this, INPUT_CLOCK_RATE);
else
clockProc.disconnect(this);
if (lastStep == BLOCK_SIZE)
lastStep = 0;
if (lastStep == 0)
{
modAssist.setupMatrix(this);
modAssist.updateValues(this);
auto direct = inputs[INPUT_PHASE_DIRECT].isConnected();
for (int s = 0; s < 3; ++s)
for (int i = 0; i < 4; ++i)
output0[s][i] = output1[s][i];
auto tat = (TrigTypes)std::round(params[TRIGA_TYPE].getValue());
auto tbt = (TrigTypes)std::round(params[TRIGB_TYPE].getValue());
if (lfostorageDisplay->shape.val.i == lt_stepseq)
{
tat = (tat == DEFAULT) ? STEP_F : tat;
tbt = (tbt == DEFAULT) ? STEP_A : tbt;
}
else
{
tat = END_OF_ENV_SEGMENT;
tbt = END_OF_ENV;
}
float ts[3][16];
// setup the base case ready for modulation below
for (auto ls : {lfostorageDisplay, lfostorage})
{
// Setup the display storage
auto *par0 = &(ls->rate);
for (int p = RATE; p < LFO_MOD_PARAM_0; ++p)
{
auto *par = &par0[paramOffsetByID[p]];
par->set_value_f01(params[p].getValue());
}
auto dt = (int)std::round(params[LFO::DEFORM_TYPE].getValue());
auto nd = lt_num_deforms[lfostorageDisplay->shape.val.i];
auto dto = std::clamp(dt, 0, nd ? (nd - 1) : 0);
if (dto != dt)
{
params[LFO::DEFORM_TYPE].setValue(dto);
}
ls->deform.deform_type = dto;
}
if (lfostorageDisplay->shape.val.i == lt_stepseq)
{
surge_ss->trigmask = 0;
for (int i = 0; i < n_steps; ++i)
{
surge_ss->steps[i] = params[STEP_SEQUENCER_STEP_0 + i].getValue();
auto ltm = (int)std::round(params[STEP_SEQUENCER_TRIGGER_0 + i].getValue());
if (ltm & 1)
surge_ss->trigmask |= (UINT64_C(1) << (16 + i));
if (ltm & 2)
surge_ss->trigmask |= (UINT64_C(1) << (32 + i));
}
surge_ss->loop_start = (int)std::round(params[STEP_SEQUENCER_START].getValue());
surge_ss->loop_end = (int)std::round(params[STEP_SEQUENCER_END].getValue()) - 1;
}
lfostorage->rate.deactivated = direct;
bool scaleAmp = params[SCALE_RAW_OUTPUTS].getValue() > 0.5;
bool anyGateConnected =
inputs[INPUT_GATE].isConnected() || inputs[INPUT_GATE_ENVONLY].isConnected();
for (int c = 0; c < nChan; ++c)
{
float ampScale[3];
ampScale[0] = 1.f;
ampScale[1] = scaleAmp ? modAssist.values[AMPLITUDE][c] : 1;
ampScale[2] = scaleAmp ? modAssist.values[AMPLITUDE][c] : 1;
// Clear this state once consumed
bool attackEntireLFO = gateInputTriggered[c];
gateInputTriggered[c] = false;
bool attackEnvelopeOnly = gateEnvInputTriggered[c];
gateEnvInputTriggered[c] = false;
if (prevAnyGateInputHigh[c] && !anyGateInputHigh[c])
{
surge_lfo[c]->release();
}
prevAnyGateInputHigh[c] = anyGateInputHigh[c];
if (direct)
{
auto pd = inputs[INPUT_PHASE_DIRECT].getVoltage(c) * RACK_TO_SURGE_CV_MUL;
lfostorage->start_phase.set_value_f01(pd);
}
lfostorage->trigmode.val.i =
params[RANDOM_PHASE].getValue() > 0.5 ? lm_random : lm_keytrigger;
copyScenedataSubset(0, storage_id_start, storage_id_end);
// Apply the modulation to the copied result to preserve temposync
auto *par0 = &(lfostorage->rate);
auto &pt = storage->getPatch().scenedata[0];
for (int p = RATE; p < RATE + n_lfo_params; ++p)
{
auto *oap = &par0[paramOffsetByID[p]];
if (oap->valtype == vt_float)
{
pt[oap->param_id_in_scene].f +=
modAssist.modvalues[p - RATE][c] * (oap->val_max.f - oap->val_min.f);
}
}
surge_lfo[c]->onepoleFactor = onepoleFactor;
if (attackEntireLFO)
{
if (retriggerFromZero)
surge_lfo[c]->envRetrigMode = LFOModulationSource::FROM_ZERO;
else
surge_lfo[c]->envRetrigMode = LFOModulationSource::FROM_LAST;
surge_lfo[c]->attackFrom(retriggerFromZero ? 0 : surge_lfo[c]->get_output(2));
priorIntPhase[c] = -1;
priorEnvStage[c] = -1;
}
surge_lfo[c]->process_block();
if (attackEntireLFO)
{
// Do the painful thing in the infrequent case. This basically moves the
// interpolant forward one step at the start of a new attack
output0[0][c / 4].s[c % 4] = surge_lfo[c]->get_output(0) * ampScale[0];
output0[1][c / 4].s[c % 4] = surge_lfo[c]->get_output(1) * ampScale[1];
output0[2][c / 4].s[c % 4] = surge_lfo[c]->get_output(2) * ampScale[2];
surge_lfo[c]->process_block();
}
else if (attackEnvelopeOnly)
{
if (retriggerFromZero)
surge_lfo[c]->envRetrigMode = LFOModulationSource::FROM_ZERO;
else
surge_lfo[c]->envRetrigMode = LFOModulationSource::FROM_LAST;
surge_lfo[c]->retriggerEnvelopeFrom(
retriggerFromZero ? 0 : surge_lfo[c]->get_output(2));
}
// repeat for env stage also here
if (surge_lfo[c]->getIntPhase() != priorIntPhase[c])
{
priorIntPhase[c] = surge_lfo[c]->getIntPhase();
endPhaseCountdown[c] = pulseSamples;
}
bool newEnvStage{false}, newEnvRelease{false};
if (surge_lfo[c]->getEnvState() != priorEnvStage[c])
{
priorEnvStage[c] = surge_lfo[c]->getEnvState();
newEnvStage = true;
if (priorEnvStage[c] == lfoeg_stuck)
newEnvRelease = !anyGateInputHigh[c];
}
auto feg = surge_lfo[c]->retrigger_FEG;
auto aeg = surge_lfo[c]->retrigger_AEG;
surge_lfo[c]->retrigger_FEG = false;
surge_lfo[c]->retrigger_AEG = false;
for (int idx = 0; idx < 2; ++idx)
{
auto ta = idx == 0 ? tat : tbt;
if (trigABCountdown[idx][c] == 0)
{
switch (ta)
{
case END_OF_ENV:
trigABCountdown[idx][c] = newEnvRelease ? pulseSamples : 0;
break;
case END_OF_ENV_SEGMENT:
trigABCountdown[idx][c] = newEnvStage ? pulseSamples : 0;
break;
case STEP_F:
trigABCountdown[idx][c] = feg ? pulseSamples : 0;
break;
case STEP_A:
trigABCountdown[idx][c] = aeg ? pulseSamples : 0;
break;
case DEFAULT:
break;
}
}
}
for (int p = 0; p < 3; ++p)
ts[p][c] = surge_lfo[c]->get_output(p) * ampScale[p];
ts[2][c] *= anyGateConnected ? 1.f : untrigEnvMult;
}
for (int p = 0; p < 3; ++p)
for (int i = 0; i < 4; ++i)
output1[p][i] = rack::simd::float_4::load(&ts[p][i * 4]);
firstProcess = false;
}
float frac = 1.0 * lastStep / BLOCK_SIZE;
lastStep++;
auto mul = SURGE_TO_RACK_OSC_MUL;
if (lfostorage->unipolar.val.b)
mul = SURGE_TO_RACK_CV_MUL;
for (int c = 0; c < nChan; c += 4)
{
for (int p = 0; p < 3; ++p)
{
rack::simd::float_4 outputI =
(output0[p][c / 4] * (1.0 - frac) + output1[p][c / 4] * frac) * mul;
outputI.store(outputs[OUTPUT_MIX + p].getVoltages(c));
}
}
for (int c = 0; c < nChan; ++c)
{
if (endPhaseCountdown[c] > 0)
{
endPhaseCountdown[c]--;
outputs[OUTPUT_TRIGPHASE].setVoltage(10.0, c);
}
else
outputs[OUTPUT_TRIGPHASE].setVoltage(0.0, c);
for (int ab = 0; ab < 2; ++ab)
{
if (trigABCountdown[ab][c] > 0)
{
trigABCountdown[ab][c]--;
outputs[OUTPUT_TRIGA + ab].setVoltage(10.0, c);
}
else
{
outputs[OUTPUT_TRIGA + ab].setVoltage(0, c);
}
}
}
}
int pulseSamples{48000 / 100};
void moduleSpecificSampleRateChange() override
{
clockProc.setSampleRate(APP->engine->getSampleRate());
// rack spec says triggers are at least 10ms so make it 12 to be safe
pulseSamples = (int)std::ceil(APP->engine->getSampleRate() * 0.012);
}
json_t *makeModuleSpecificJson() override
{
auto fx = json_object();
clockProc.toJson(fx);
json_object_set_new(fx, "retriggerFromZero", json_boolean(retriggerFromZero));
json_object_set_new(fx, "onepoleFactor", json_real(onepoleFactor));
return fx;
}
void readModuleSpecificJson(json_t *modJ) override
{
clockProc.fromJson(modJ);
{
auto rt = json_object_get(modJ, "retriggerFromZero");
if (rt)
{
retriggerFromZero = json_boolean_value(rt);
}
else
{
retriggerFromZero = false;
}
}
{
auto rt = json_object_get(modJ, "onepoleFactor");
if (rt)
{
onepoleFactor = json_real_value(rt);
}
else
{
onepoleFactor = 0.75;
}
}
}
void setWhichTemposyc(bool doRate, bool doEnv)
{
auto val = (doRate ? 1 : 0) | (doEnv ? 2 : 0);
paramQuantities[WHICH_TEMPOSYNC]->setValue(val);
if (inputs[INPUT_CLOCK_RATE].isConnected())
activateTempoSync();
}
};
} // namespace sst::surgext_rack::lfo
#endif